Small predecessors of common objects and evolutionary sequences

[MathAndCode]

• Block
  • Fewest cells required: 3 (2o$o)
  • Edgeshootable predecessors: b2o$o2bo, 2b2o$bo$o, 2bo$bobo$o
• Blinker
  • Fewest cells required: 3 (3o) (4 for a non-trivial predecessor (o$b2o2$o, bo$obo2$o, bo$obo2$bo, o$obo2$o, o$obo2$bo, o$obo2$2bo))
  • Edgeshootable predecessors: 3o
  • Note: A traffic light makes four blinkers.
• Beehive
  • Fewest cells required: 4 (b3o2$o, 4o, 2bo$2o2$o, 2bo$2o2$bo, o$b2o$3bo, o$2o2$o, bo$2o2$o)
  • Edgeshootable predecessors: b3o2$o, b2o$o2b2o, 2bo$2ob2o
  • Note: A honey farm makes four beehives.
• Glider
  • Fewest cells required: 5 (3o$o$2bo, 3o$o$3bo, obo$bobo$bo, 2o$2b2o$bo, 3o$3bo$o)
  • Edgeshootable predecessors: 3o$3bo$o, 2bo$b3o$o$o, bo$obo$3bo$2o
• Loaf
  • Fewest cells required: 5 (bo$o$bobo$2bo, bo$o$bo$2b2o, o$o$bo$2b2o, 3o2$3b2o, 2b3o$o$bo, ob3o2$bo, 3o$2bo$3bo, 3o$2bo$4bo, o$b2o$2bo$3bo, o2$b2o$2bo$3bo, o2$b2o$2bo$4bo, b4o$o, 2b3o$bo$o, 2bo$b3o$o, 2bo$b3o2$o, o$b2o$3bo$4bo, o$obo2$2b2o, bo$obo2$2b2o, 2bo$obo2$2b2o, b2o$2o2$o, b2o$2o2$bo, o$3o2$3bo, bobo$2o2$o, bo$2obo2$o, bo$2obo2$2bo)
  • Edgeshootable predecessors: bo$o$bobo$2bo, bo$o$bo$2b2o, o$o$bo$2b2o, 3o$o$o, b4o$o, 2b3o$bo$o
• Boat
  • Fewest cells required: 5 (bo$obo$bo$3bo, bobo$obo$bo, 2o$o$b2o, bo$ob2o$o, bobo$obo$o, bo2$4o, o2$3o$3bo, o2$b2o$3b2o, o2$b2obo$3bo, 2b2o$bo$2o, 2b2o2$bo$2o, bobo2$bo$2o)
  • Edgeshootable predecessors: 3o$3bo$o3bo
• Ship
  • Fewest cells required: 6 (2o$bo$2b2o2$4bo, 2o$obo$bo$3bo, 2o$o$b2o2$3bo, o$bo$o$b2o2$3bo, bo$bo$o$b2o2$3bo, o$bo$obo$bobo, o$2bo$bobo$2bobo, o$2bo$bobo$2bo$4bo, obo$bobo$2bobo, bo$ob2o$bo$bo, 2o$o2bo$2bo$bo, o$2b2o$b2o$bo, b2o$o2bo$o$bo, bo$3bo$obo$2o)
  • Edgeshootable predecessors: 2b3o$bo$o$o$o
  • Note: An R-sequence only requires five cells.
• Pond
  • Fewest cells required: 4 (bo$2o$2bo)
  • Edgeshootable predecessors: none that I know of
• Tub
  • Fewest cells required: 4 (bo$obo$bo) (5 for a non-trivial predecessor (bo2$3o2$bo, 2o$2bo$2o$o, b2o$o$obo)(
  • Edgeshootable predecessors: 2o$2bo$2o$o
• Long boat
  • Fewest cells required: 6 (2b3o$bo$o$bo, 2b3o$bo$o$o, o2$2o2$2bo$2b2o, bo2$2o2$2bo$2b2o)
  • Edgeshootable predecessors: 2b3o$bo$o$bo, 2b3o$bo$o$o
• Toad
  • Fewest cells required: 6 (bo$2o$2bo$3b2o, bo$2o$2bobo$3bo, o$2o$2b2o$4bo, o$2o$2b2o2$2bo, o$2o$2b2o2$3bo, 3o$3bo2$b2o, o2$b2o$b2o2$3bo, obo2$bo$b2o$3bo, obo2$bo$b2o2$3bo, 2b2o2$bo$b2o2$o, bobo2$bo$b2o2$o, o$2bo$bo$bo$2bo$3bo, bo$o2bo$bo2bo$2bo, bo$o2b2o$bo$2bo, bo$o2bo$bo$2bobo, o$bo$2bo$bo$bo$3bo, o$3b2o$b2o$5bo, o$bobo$2bobo$5bo, 5bo$bobo$2bobo$o, 4bo$obo$bobo$o, 3bo$obo$bobo$o, bo2$2b2o$2o2$2bo, o2$obo$bobo2$bo, o2$obo$bobo2$2bo, o2$obo$bobo2$3bo, bo2$obo$bobo2$bo, bo2$obo$bobo2$2bo, 2bo2$obo$bobo2$bo, bo$2b2o$bo$o$2bo, bo$2b2o$o$bo$2bo)
  • Edgeshootable predecessors: none that I know of
• Ship-tie
  • Fewest cells required: 8 (4b2o$4bo$2b2o2$bo$2o)
  • Edgeshootable predecessors: bo$bo$o$b2o$3bo$3bob2o$4bo
  • Note: A blonk-tie only requires six cells, and a clean fleet only requires seven cells.
• Beacon
  • Fewest cells required: 6 (bo$2o$2b2o$2bo, o$o$bo$2bo$3b2o, o$o$bo$2bobo$3bo, bo$o$bo$2bobo$3bo, bo2$2o$2bobo$2bo, o2$2o$2bobo$2bo, o2$2o$2bo$2bobo, o$bo$bo$2b2o$4bo)
  • Edgeshootable predecessors: o$o$bo$2bo$3b2o, o$o$bo$2bobo$3bo, bo$o$bo$2bobo$3bo, 3b2o$5bo$3b2o$obo$obo$bo
• Barge
  • Fewest cells required: 6 (3o$3bo$4b2o, 3o$3bobo$4bo, o2$b2o$3b2o2$5bo, 2o$2bo$bo$2b2o)
  • Edgeshootable predecessors: 3o$3bo$4b2o, o$o$b2o$2bo$3b2o
• Half-bakery
  • Fewest cells required: 8 (o$o$o$bo$2bo$3b3o, o$bo$bo$2bo$3bo$4b2o$6bo)
  • Edgeshootable predecessors: o$o$o$bo$2bo$3b3o
  • Note: A bakery only requires seven cells.
• Mango
  • Fewest cells required: 7 (bo$obo$bo$2b2o2$bo, 2o$2bo$bo$2b2o2$bo, 2o2$bob3o2$bo, bo$o$bob3o2$bo, 2bo$bob2o$2bo$2o, 5bo2$bob2o$obo$bo, 5bo2$bob2o$obo$o)
  • Edgeshootable predecessors: 2bo$4o$3b2o$bo$4bo
• Fishhook
  • Fewest cells required: 7 (o$bo$2b2o2$4b2o$6bo, 2o$bo$bobo$2bobo, 2o$bo$bob2o$2bo, 2bo$5bo$3b2o$o$b2o, 2bo$5bo$3b2o$2o$2bo, 2bo$5bo$3b2o$bo$obo, o$2bo$bo$3b2obo$5bo, o$2bo$bo$3b2o$5b2o, 2o$bo2$2b3o2$2bo, 2o$bo$4bo$2b2o2$bo, o$2bo$2o2$2bo$2b2o, bo$o$obo2$2bo$2b2o)
  • Edgeshootable predecessors: 2o$2o$2b2o$4bo
  • Note: It often forms from two edgeshootable R-pentomino grandparents arranged as 2b3o$o4bo$o4bo$o$b2o.
• Lightweight spaceship
  • Fewest cells required: 8 (4o$o3bo$o$bo, 3b4o$2bo4bo$bo$o, bo$o3bo$o$4o, 3b4o$2bo$bo5bo$o, 5bo$bo$b2ob2o$o$3bo, 2bo$2obo$4bo$bo2bo$6bo)
  • Edgeshootable predecessors: 4o$o3bo$o$bo, 3b4o$2bo4bo$bo$o
• Long barge
  • Fewest cells required: 7 (ob2o$2bo$2o$o, obo$2b2o$2o$bo)
  • Edgeshootable predecessors: none that I know of
• Aircraft carrier
  • Fewest cells required: 6 (bo3bo$2b2o$o3bo)
  • Edgeshootable predecessors: none that I know of
• Pulsar
  • Fewest cells required: 7 (3o2$bo2$3o, 3bo$b2ob2o$o5bo, bo$5bo$ob3o2$bo, bo$4b2o$ob2o2$2bo, bo$4bo$ob2obo2$2bo, 3bo$2bo2b2o$2o2bo, 3bo$obo3bo$bo2b2o, 3bo$2bo3bo$2o2b2o, 3bo$obo2bo$bo2bobo, 3bo$obo2b2o$bo2bo, 3bo$2bo2bo$2o2bobo, 3bo$bo3bo$obobobo, 3bo$bo3b2o$obobo, 3bo$bo4bo$obob2o, 3bo$o5bo$b2ob2o, 3bo$o4b2o$b2obo, 3bo$2o3b2o$2bobo)
  • Edgeshootable predecessors: 5o$o3bo, 3bo$b2ob2o$o5bo
• Paperclip
  • Fewest cells required: 7 (o$2o2$b4o, bo$2o2$b4o)
  • Edgeshootable predecessors: none that I know of
• Middleweight spaceship
  • Fewest cells required: 9 (5o$o4bo$o$bo, 3b5o$2bo5bo$bo$o, 2o2b2o$bob2o$o4bo, b2o2b2o$obob2o$6bo, b2o2b2o$2bob2o$o5bo, 2bo$bo$o2b2o$o2bo$2o, 2bo2$2ob2o$o2bo$o$bo, bo$o4bo$o$5o, 3b5o$2bo$bo6bo$o)
  • Edgeshootable predecessors: 5o$o4bo$o$bo, 3b5o$2bo5bo$bo$o
  • Note: 5b3o25$2o$2bo$2bo$2bo, 5b3o25$bo$obo$2bo$3bo, 5b3o25$2bo$obo$2b2o, 28b3o2$3bo$o$2b2o$bo, 27b3o2$3bo$o$b2o$o, 27b3o2$2bo$bo$bo$o$2bo, 27b3o2$bo$bo$2o2$2bo, 11b3o28$b2o$o$o$o, 12b3o28$2bo$bobo$bo$o, 12b3o28$bo$bobo$2o, 31b3o11$bo$2b2o$o$3bo, 30b3o11$o$b2o$o$3bo, 30b3o10$2bo$o$bo$bo$2bo, 30b3o10$2bo2$2o$bo$bo, 17b3o31$o$o$o$b2o, 18b3o31$o$bo$bobo$2bo, 18b3o32$2o$bobo$bo, 32b3o17$2bo$2o$3bo$o, 33b3o17$3bo$b2o$3bo$o, 32b3o16$o$2bo$bo$bo$o, 32b3o16$o2$b2o$bo$bo, 35b3o16$b2o$o$o$o, 36b3o16$2bo$bobo$bo$o, 36b3o16$bo$bobo$2o, 19b3o35$bo$2b2o$o$3bo, 18b3o35$o$b2o$o$3bo, 18b3o34$2bo$o$bo$bo$2bo, 18b3o34$2bo2$2o$bo$bo, 36b3o16$b2o$o$o$o, 37b3o16$2bo$bobo$bo$o, 37b3o16$bo$bobo$2o, 19b3o36$bo$2b2o$o$3bo, 18b3o36$o$b2o$o$3bo, 18b3o35$2bo$o$bo$bo$2bo, 18b3o35$2bo2$2o$bo$bo, 30b3o14$3o$3bo$3bo, 30b3o13$o$b2o$3bo$2bo, 29b3o13$o$3o2$bo, 14b3o29$bobo$bo$o$2bo, 14b3o28$3bo$bo$bo$obo, 15b3o29$o3bo$2b2o$bo, 15b3o29$o$2b3o$2bo, 33b3o6$b3o$o$o, 33b3o5$3bo$b2o$o$bo, 33b3o5$2bo$3o2$bo, 6b3o30$2bo$o$bo$bobo, 6b3o31$obo$bo$bo$3bo, 7b3o31$bo$2b2o$o3bo, 7b3o31$2bo$2b3o$o, 49b3o18$3bo$3bo$3o, 49b3o18$2bo$3bo$b2o$o, 48b3o18$bo2$3o$o, 21b3o48$obo$2bo$3bo$bo, 21b3o47$o$2bo$2bo$bobo, 21b3o48$o3bo$b2o$3bo, 21b3o48$4bo$3o$2bo, and 2bo$2obo$2bo$4b3o only have eight cells.
• Long ship
  • Fewest cells required: 7 (2o$o$2b2o$4bo$bo)
  • Edgeshootable predecessors: none that I know of
• Integral sign
  • Fewest cells required: 9 (o$2bo$bo$3b2ob2o$5b2o, o$2bo$bo$3b2obobo$5b2o, o$2bo$bo$3b2obo$5b2obo, 4bo$3bo$4bo$b3o$o$bo$o, 3bo$3bo$4bo$b3o$o$bo$o, 3bo$3bo$4bo$b3o$o$bo$bo, obo2$bo2$3o2$3bo$3b2o, 2o2$bo2$3o2$3bo$3b2o, bobo2$bo2$3o2$3bo$3b2o, obo2$2bo2$b3o2$4bo$4b2o, 2o2$2bo2$b3o2$4bo$4b2o, b2o2$3bo2$2b3o2$bo$2o, o$bo$bo2$3o2$3bo$3b2o, o$o$bo2$3o2$3bo$3b2o, bo$o$bo2$3o2$3bo$3b2o, 2bo$o$bo2$3o2$3bo$3b2o, o$2bo$bo2$3o2$3bo$3b2o, 3bo$2bo$bo2$3o2$3bo$3b2o, o$bo$2bo2$b3o2$4bo$4b2o, 3bo$bo$bo2$3o2$3bo$3b2o, o$2bo$2bo2$b3o2$4bo$4b2o, o2$obo2$3o2$3bo$3b2o, bo2$obo2$3o2$3bo$3b2o, 2bo2$obo2$3o2$3bo$3b2o, o2$2o2$b2o$o$3bo$3b2o, bo2$2o2$b2o$o$3bo$3b2o, 2bo2$2o2$b2o$o$3bo$3b2o, o2$b2o2$2b2o$bo$4bo$4b2o)
  • Edgeshootable predecessors: none that I know of
  • Note: o$2o8$bo$2obo$bo, o$2o7$2bo$bo$bo$b2o, o$2o8$b2o$bo$bo$2bo, bo$2o8$bo$2obo$bo, bo$2o7$2bo$bo$bo$b2o, bo$2o8$b2o$bo$bo$2bo, 2o$o8$bo$2obo$bo, 2o$o7$2bo$bo$bo$b2o, 2o$o8$b2o$bo$bo$2bo, 2o$bo8$bo$2obo$bo, 2o$bo7$2bo$bo$bo$b2o, and 2o$bo8$b2o$bo$bo$2bo only have eight cells.
• Shillelagh
  • Fewest cells required: 8 (4bobo$2bo$bob2o$o$o, 4bo$2bo3bo$bob2o$o$o, 4bo$2bo$bob2obo$o$o, b3o2$2o2b3o, o$b2o$2bo$2bo$3b2o2$2bo, o2$b2o$2bo$2bo$3b2o2$2bo, 2b3o$2bo$o$b2o2$o, 2b3o$2bo$o$b2o2$3bo, 2o$2bo$o$o$bo$2b2o, 2o$2bo$o$o$bobo$2bo, 2o$2bo$o$bo$bo$2bo$3bo, 2o$2bo$o$bo$b3o, bobo$obo$o$bo$2o)
  • Edgeshootable predecessors: 2b2o$b2obo$o4bo$4bo
• Boat-tie
  • Fewest cells required: 10 (3b3o$2bo$bo3bo$o$o$obo, 4bo$3bobo$3bo2bo$b2o$o$bo$2bo, 4bo$3bobo$3bo2bo$b2o$o$obo, 4b2o$3bo$3bobo$b2o$o$obo, 4b2o$3bo$3b2o$b2o$2bo$2o, o$bo$obo$2bo$3b2o$5bo$4bobo, o$bo$obo$2bo$3b2o$5bo$4bo$6bo, o$bo$obo$2bo$3b2o$5bo$4bo$3bo, o$bo$obo$2bo$3b2o$5bo$3bobo, 7bo$5bo$4bobo$4bo$2b2o$bo$2bo$o, 6bo$4bo$3bobo$3bo$b2o$o$bo$2bo, 6bo$4bo$3bobo$3bo$b2o$o$obo, bo2$3o$4bo$bo$3b3o2$4bo, bo2$3o2$bo2bo$2bobobo$4bo)
  • Edgeshootable predecessors: 3b3o$2bo$bo3bo$o$o$obo
  • Note: 3o2$bo$6bo2$5b3o, o$obo$o2$5bo2$4b3o, 3o2$bo3$5b3o2$6bo, o$obo$o4$4b3o2$5bo, bo2$3o5$5b3o2$6bo, and 2bo$obo$2bo4$6b3o2$7bo only have eight cells.
• Snake
  • Fewest cells required: 6 (2obo$ob2o) (7 for a non-trivial predecessor (2o$3bo$2bo$bo$b2o, 2o2$2b2o$bo$bo$2bo, 2o2$o$obo$bo$o, 3bo$o3bo$ob2o$5bo, 2bo$o3bo$2b2obo$o, 2bo$o3b2o$2b2o$o))
  • Edgeshootable predecessors: none that I know of
• Big S
  • Fewest cells required: 7 (3bo$3obo$4bo$5bo)
  • Edgeshootable predecessors: 2b2o$b2obo$o4bo$4bo
• Bipond
  • Fewest cells required: 7 (o$bo$bo$2bo$3b2o$5bo)
  • Edgeshootable predecessors: none that I know of
• Trans-boat with tail
  • Fewest cells required: 8 (3b2o$2bobo$2bo$o$o$bo, 3bobo$2bobo$2bo$o$o$bo, 3bo$2bob2o$2bo$o$o$bo, 3b2o$2bobo$2bo$o$bo$bo, 3bobo$2bobo$2bo$o$bo$bo, 3bo$2bob2o$2bo$o$bo$bo, 3b2o$2bobo$2bo$o$bo$o, 3bobo$2bobo$2bo$o$bo$o, 3bo$2bob2o$2bo$o$bo$o)
  • Edgeshootable predecessors: none that I know of
• Boat tie ship
  • Fewest cells required: 10 (4bo$3bobo$3bo2bo$b2o$o$2o, 4b2o$3bo$3bobo$b2o$o$2o, 4bo$3bobo$3bo2bo$b2o$o$bo$o, 4b2o$3bo$3bobo$b2o$o$bo$o, 4bo$3bobo$3bo2bo$b2o$o$bo$bo, 4b2o$3bo$3bobo$b2o$o$bo$bo, 5bo$4bo$3bobo$3bo$b2o$o$2o, 6bo$4bo$3bobo$3bo$b2o$o$2o, 5bo$4bo$3bobo$3bo$b2o$o$bo$o, 6bo$4bo$3bobo$3bo$b2o$o$bo$o, 5bo$4bo$3bobo$3bo$b2o$o$bo$bo, 6bo$4bo$3bobo$3bo$b2o$o$bo$bo)
  • Edgeshootable predecessors: none that I know of
• Hat
  • Fewest cells required: 8 (obobo$2bo2$b3o2$2bo)
  • Edgeshootable predecessors: none that I know of
• Very long ship
  • Fewest cells required: 9 (3b2o$4bo$b2o$o3bo$bo$bo, 4bo$3bo$4bo$b2obo$o$bo$bo, 3bo$3bo$4bo$b2obo$o$bo$bo, 3b2o$4bo$b2o$o3bo$bo$o, 4bo$3bo$4bo$b2obo$o$bo$o, 3bo$3bo$4bo$b2obo$o$bo$o, 3b2o$4bo$b2o$o3bo$2o, 4bo$3bo$4bo$b2obo$o$2o, 3bo$3bo$4bo$b2obo$o$2o)
  • Edgeshootable predecessors: none that I know of
• Heavyweight spaceship
  • Fewest cells required: 10 (6o$o5bo$o$bo, 3b6o$2bo6bo$bo$o, 2bo2$b4o$o4bo$o5bo$bo, bo2$b3obo$o3bo$o5bo$bo, bo2$b3obo$o3bo$o4bo$bo, o2$b2o2bo$o2b2o$o5bo$bo, o2$b2ob2o$o2bo$o5bo$bo, o2$b2obo$o2bobo$o5bo$bo, bo$3bo$b2o2bo$o3bo$2o2bo, bo$3bo$b2o2bo$o3bo$bo2bo$o, bo$3bo$b2o2bo$o3bo$bo2bo$bo)
  • Edgeshootable predecessors: 6o$o5bo$o$bo, 3b6o$2bo6bo$bo$o
  • Note: 11b2o$12bo41$2bo$3o$bo, 12b2o$13bo41$o$2b3o$2bo, 12b2o$13bo41$o3bo$2b2o$bo, 11b2o$12bo40$3bo$bo$bo$obo, 11b2o$12bo41$bobo$bo$o$2bo, 11b2o$12bo40$o$bo$3o, 12b2o$13bo40$bo$obo$2bo$3bo, 12b2o$13bo40$2o$2bo$2bo$2bo, 12b2o$13bo40$2bo$obo$2b2o, 11b2o$11bo41$2bo$3o$bo, 12b2o$12bo41$o$2b3o$2bo, 12b2o$12bo41$o3bo$2b2o$bo, 11b2o$11bo40$3bo$bo$bo$obo, 11b2o$11bo41$bobo$bo$o$2bo, 11b2o$11bo40$o$bo$3o, 12b2o$12bo40$bo$obo$2bo$3bo, 12b2o$12bo40$2o$2bo$2bo$2bo, 12b2o$12bo40$2bo$obo$2b2o, 12bo$11b2o41$2bo$3o$bo, 13bo$12b2o41$o$2b3o$2bo, 13bo$12b2o41$o3bo$2b2o$bo, 12bo$11b2o40$3bo$bo$bo$obo, 12bo$11b2o41$bobo$bo$o$2bo, 12bo$11b2o40$o$bo$3o, 13bo$12b2o40$bo$obo$2bo$3bo, 13bo$12b2o40$2o$2bo$2bo$2bo, 13bo$12b2o40$2bo$obo$2b2o, 11bo$11b2o41$2bo$3o$bo, 12bo$12b2o41$o$2b3o$2bo, 12bo$12b2o41$o3bo$2b2o$bo, 11bo$11b2o40$3bo$bo$bo$obo, 11bo$11b2o41$bobo$bo$o$2bo, 11bo$11b2o40$o$bo$3o, 12bo$12b2o40$bo$obo$2bo$3bo, 12bo$12b2o40$2o$2bo$2bo$2bo, 12bo$12b2o40$2bo$obo$2b2o, 2bo$3o$7b3o$bo, b3o$o6b3o$o, 3bo$b2o$o6b3o$bo, 3o4$3bo$bo$2bo$2bobo, 3o5$bobo$2bo$2bo$4bo, 3o5$bo$2b2o$o3bo, and 3o5$2bo$2b3o$o only have eight cells.
• Tub with tail
  • Fewest cells required: 8 (3b2o$5bo$b2o$o$obo, 3b2o$5bo$b2o$o$bo$2bo, 3bo$4b2o$b2o$o$obo, 3bo$4b2o$b2o$o$bo$2bo, 3bobo$4bo$b2o$o$obo, 3bobo$4bo$b2o$o$bo$2bo, 5bo$3b2o$b2o$b2o$o)
  • Edgeshootable predecessors: none that I know of
  • Note: It sometimes forms from a traffic light predecessor hitting a certain spark.
• Mirrored tables
  • Fewest cells required: 10 (bo2$2b2o$o$o2bo$b3o2$o, obo2$bo$bo2bo$o2bo$b2o$bo, obo2$o$bobo$o2bo$b2o$bo, b2o2$o$bobo$o2bo$b2o$bo, obo2$bo$o2bo$o2bo$b2o$bo, bobo2$2bo$bo2bo$o2bo$b2o$2bo, b2o2$3bo$obo$bo2bo$b2o$2bo, bobo2$3bo$obo$bo2bo$b2o$2bo, obo2$2bobo$bo$2bo$4o, b2o2$obo$3bo$2bo$b4o, 2bobo2$obo$3bo$2bo$b3obo2$o, 2bobo2$obo$3bo$2bo2bo$b3o2$o, 2bobo2$obo$3bobo$2bo$b3o2$o, b2o2$obo$3bo$2bo$b3obo2$o, b2o2$obo$3bo$2bo2bo$b3o2$o, b2o2$obo$3bobo$2bo$b3o2$o, 2bobo2$obo$3bo$2bo$b3obo$o, 2bobo2$obo$3bo$2bo2bo$b3o$o, 2bobo2$obo$3bobo$2bo$b3o$o, b2o2$obo$3bo$2bo$b3obo$o, b2o2$obo$3bo$2bo2bo$b3o$o, b2o2$obo$3bobo$2bo$b3o$o, 3bo$2ob4o$bobo$bo, o2bo$bob4o$bobo$2bo, 4bo$2o$bo2b3o$2bo$2o, 4bo$2o$bo2b2o$2bo$2o4bo, 5bo$2o$bo2b2o$2bo$2o4bo, o3bo$bo$bo2b3o$obo$bo, o3bo$bo$bo2b2o$obo$bo4bo, o4bo$bo$bo2b2o$obo$bo4bo, 4bo$bo$2o2b3o$2bo$bo$o, 4bo$bo$2o2b2o$2bo$bo4bo$o, 5bo$bo$2o2b2o$2bo$bo4bo$o, 2o$2b3o$bo2$2bo$obo$4bo, b2o$2bobo$bobo$o$b3o)
  • Edgeshootable predecessors: none that I know of
• Dead spark coil
  • Fewest cells required: 10 (o2bo$3o6$3o$o2bo, bo2bo$b3o6$b3o$o2bo, bo2$3o$bo4$bo$3o2$bo)
  • Edgeshootable predecessors: none that I know of
  • Note: It can form in sequences that develop a line of odd reflection symmetry early on (especially with a gutter) then happen to form a pi-sequence a certain distance from the line of reflection aimed at the line of reflection on one side, as that means that there is a pi seqeunce properly aligned and timed on the other side.
• Canoe
  • Fewest cells required: 8 (2o$o$2bo$2bo2bo$3b2o, 2o$o$2bo$bo2bo$3b2o)
  • Edgeshootable predecessors: none that I know of
• Beehive on dock
  • Fewest cells required: 10 (o$o$o$4bo$b2o$3bob3o)
  • Edgeshootable predecessors: none that I know of
  • Note: bo$bo$o2b3o3$3b3o, 2o2$bob3o3$3b3o, bo$o$bob3o3$3b3o, bo2$2ob3o3$3b3o, 4bo$3bobo$2bo3bo$2bo2$2o$2bo, 4b2o$3bo$2bo3bo$2bo2$2o$2bo, 4bo$3bobo$2bo3bo$2bo2$obo$2bo, 4b2o$3bo$2bo3bo$2bo2$obo$2bo, 4bo$3bobo$2bo3bo$2bo2$obo$bo, 4b2o$3bo$2bo3bo$2bo2$obo$bo, 4bo$3bobo$2bo3bo$2bo2$obo$o, 4b2o$3bo$2bo3bo$2bo2$obo$o, 4bo$2b3o$6bo$bo2$obo$o, 5bo$3b2o$2bo3bo$bo2$obo$o, 4bo$2b3o$6bo$bo2$obo$bo, 5bo$3b2o$2bo3bo$bo2$obo$bo, 4bo$2b3o$6bo$bo2$obo$2bo, and 5bo$3b2o$2bo3bo$bo2$obo$2bo only have nine cells.
• Mirrored buns
  • Fewest cells required: 8 (bo$2o$2bo2$2bo$2o$bo)
  • Edgeshootable predecessors: none that I know of
• Moose antlers
  • Fewest cells required: 9 (5o2$bo$bo$2bo$o, 5o2$bo$bo$2bo$bo, 5o2$bo$bo$2bo$2bo, 5o2$bo$bo$2bo$3bo, 5o2$bo$2bo$bo$o, 5o2$bo$2bo$bo$bo, 5o2$bo$2bo$bo$2bo, 5o2$bo$2bo$bo$3bo, 5o2$bo$2bo$2bo$o, 5o2$bo$2bo$2bo$bo, 5o2$bo$2bo$bobo, 5o2$3bo$obo$bo, 5o2$3bo$2bo$2o, 5o2$3bo$o$b2o, 5o2$3bo$2o$2bo, 5o2$3bo$bo$obo)
  • Edgeshootable predecessors: none that I know of
• Block on dock
  • Fewest cells required: 9 (3bo$2o$bo2$3bo$b2o$4bo$o, 3bo$bo$2o2$3bo$b2o$4bo$o, 2bo$bo$2o2$3bo$b2o$4bo$o, 3bo$2o$bo2$3bo$b2o$3bo$bo, 3bo$bo$2o2$3bo$b2o$3bo$bo, 2bo$bo$2o2$3bo$b2o$3bo$bo, 3bo$2o$bo3$b3o$4bo$2bo, 3bo$bo$2o3$b3o$4bo$2bo, 2bo$bo$2o3$b3o$4bo$2bo, b3o$bobo2$bo$2o$2bo, b2obo$bobo2$bo$2o$2bo, b2o$bob2o2$bo$2o$2bo, ob2o$bobo2$bo$2o$2bo)
  • Edgeshootable predecessors: none that I know of
• Block on table
  • Fewest cells required: 9 (o$2o2$4o$o2bo, bo$2o2$4o$o2bo, b2o$o2bo$bo$bob2o2$3bo)
  • Edgeshootable predecessors: none that I know of
• Scorpion
  • Fewest cells required: 9 (3b2o$o3bo$2o$4b2o$6bo, 3b2o$2o2bo$o$4b2o$6bo, 4bo$o2b2o$2o$5b2o$4bo, 4bo$2ob2o$o$5b2o$4bo)
  • Edgeshootable predecessors: none that I know of
• Beehive with tail
  • Fewest cells required: 9 (4bo$2b3o$bo$2bo$2o2$2bo, 3b2o$5bo$b2o$o$obo2$o, 3b2o$5bo$b2o$o$obo2$bo, 3b2o$5bo$b2o$o$obo2$2bo, 3b2o$5bo$b2o$o$bo$2bo$o, 3b2o$5bo$b2o$o$bo$bo$3bo, 3bo$4b2o$b2o$o$obo2$o, 3bo$4b2o$b2o$o$obo2$bo, 3bo$4b2o$b2o$o$obo2$2bo, 3bo$4b2o$b2o$o$bo$2bo$o, 3bo$4b2o$b2o$o$bo$bo$3bo, 3bobo$4bo$b2o$o$obo2$o, 3bobo$4bo$b2o$o$obo2$bo, 3bobo$4bo$b2o$o$obo2$2bo, 3bobo$4bo$b2o$o$bo$2bo$o, 3bobo$4bo$b2o$o$bo$bo$3bo)
  • Edgeshootable predecessors: none that I know of
• Twin hat
  • Fewest cells required: 11 (3o3b3o3$3b3o$2bo2bo, 3o2$4bo$3b2obo$4bo2$3o)
  • Edgeshootable predecessors: none that I know of
• Loop
  • Fewest cells required: 9 (4bo$2b2o$2o$obobo$2bo, 2b3o$2o$obo$2bobo)
  • Edgeshootable predecessors: none that I know of
• Python
  • Fewest cells required: 8 (5bo$2b2o$o3bo$2o2bo, 2o$3bo$2bo$bo$o$2o, o$2b2o$bo2$obo$2o, obo$3bo$bo$2bo$o$2o, o$bobo$2bo2$obo$2o, bo$2bobo$3bo2$b2o$o$3bo, bo$3b2o$2bo2$3o2$3bo, bo$3b2o$2bo$o$b2o2$2bo, bo$3b2o$2bo$o$b2o2$bo)
  • Edgeshootable predecessors: none that I know of
• Fourteener
  • Fewest cells required: 10 (b3o$o$bo$2bo$2bo$bo2$2b2o, b3o$o$bo$2bo$2bo$bo2$bobo, b3o$o$bo$2bo$2bo$bo2$obo, b3o$o$bo$2bo$bo$2bo2$bobo, b3o$o$bo$2bo$bo$2bo2$obo, b3o$o$bo$2bo$bo$2bo2$2o, b3o$o$bo$2bo$bo$bo2$2b2o, b3o$o$bo$2bo$bo$bo2$bobo, b3o$o$bo$2bo$bo$bo2$obo, o2bob2o$2ob2o2bo$3bo, o2bobo$2ob2ob2o$3bo, o2bobobo$2ob2obo$3bo)
  • Edgeshootable predecessors: none that I know of
• Pentadecathlon
  • Fewest cells required: 8 (bo2$3o5$3o2$bo)
  • Edgeshootable predecessors: bo4bo$obo2bobo$o6bo$b6o
  • Note: It often forms from a common phi spark predecessor hitting a beehive parent, such as results from 3bo2$3o4$b3o$o2bo$2b2o.
• Cis-rotated bookends
  • Fewest cells required: 9 (o$o$bo3b2o$2b3o2bo, o$o$bo3bo$2b3ob2o, o$o$bo3bobo$2b3obo, bo$o$bo3b2o$2b3o2bo, bo$o$bo3bo$2b3ob2o, bo$o$bo3bobo$2b3obo)
  • Edgeshootable predecessors: o$o$bo3b2o$2b3o2bo, o$o$bo3bo$2b3ob2o, o$o$bo3bobo$2b3obo, bo$o$bo3b2o$2b3o2bo, bo$o$bo3bo$2b3ob2o, bo$o$bo3bobo$2b3obo
• Elevener
  • Fewest cells required: 9 (2o$obo2$2b2o$4bo$4b2o, 2o$obo2$2b2o$4bobo$4bo, 2o$obo2$2b2o$4bo$4bobo)
  • Edgeshootable predecessors: none that I know of
• Clock
  • Fewest cells required: 6 (2bo$2o$2b2o$bo) (8 for a non-trivial predecessor (o$2bobo$bo$b2o$obo, 2bo$o$b2o$b2o$3bo$bo))
  • Edgeshootable predecessors: none that I know of
• Broken snake
  • Fewest cells required: 10 (o$bobo3bo$o3b2o$b2o3bo, 2obo3bo$o3b2o$b2o3bo, 2o$o2b2obo$bobob2o, 2o$o2bobobo$2b2o2bo$5bo, 2o5bo$o2bobo$2b2o2bo$5bo)
  • Edgeshootable predecessors: none that I know of
• Fishhook head siamese fishhook tail
  • Fewest cells required: 10 (o2$b2o2b3o$3bo$4bo$3b2o, 2bo2$2o2b3o$2bo$3bo$2b2o, o$obob3o2$bobo$2b2o, bo$obob3o2$bobo$2b2o, 3ob3o2$3bo$2bobo$bo, 4bo$3o2b2o2$3b2o$2bo$bo, 2bo$2o2b3o2$2b2o$4bo$bo, 2bobo$2o3b2o2$2b3o2$bo, 4bo$2bo$2o3b2o$4bo$2b2o2$3bo, 4bo$2bo$2o3b2o$4bo$2b2o2$2bo, o$bo2b3o$o$2b2o$4bo$5bo, bo$bo2b3o$o$2b2o$4bo$5bo, o3bo$bo3b2o$o$2b3o2$5bo, bo2bo$bo3b2o$o$2b3o2$5bo, o3bo$bo3b2o$obo$3b2o2$4bo, o4bo$2bo3b2o$bobo$4b2o2$5bo, o3bo$bo3b2o$obo$3b2o2$3bo, o4bo$2bo3b2o$bobo$4b2o2$4bo, o$bo2b3o$obo$3bo$4bo$4bo, o$2bo2b3o$bobo$4bo$5bo$5bo, o$bo2b3o$obo$3bo$4bo$3bo, o$2bo2b3o$bobo$4bo$5bo$4bo, 2bo2$2o2b3o$2bo$3bo$4bo$3bo, 2bo2$2o2b3o$2bo$3bo$4bo$4bo, o2$b2o2b3o$3bo$4bo$5bo$4bo, o2$b2o2b3o$3bo$4bo$5bo$5bo, 3ob3o2$3bo$2bobo$2bo)
  • Edgeshootable predecessors: none that I know of
• Block on cover
  • Fewest cells required: 10 (2obo$2b2o2$bo$bo$b2o$2bo, 2obo$2b2o2$bo$bo$b2o2$2bo, 2obo$2b2o2$bo$bo$b2o2$bo, 2obo$2b2o2$bo2$2o$2b2o, 2bo$2o$b2o2$o$o$2o$bo, 2bo$2o$b2o2$o$o$2o2$bo, 2bo$2o$b2o2$o$o$2o2$o, 3bo$b2o$2b2o2$bo2$2o$2b2o, o2bo$b3o3$2o$bo$bo$2bo, bo2bo$b3o3$2o$bo$bo$2bo, bo2bo$2b3o2$o$bo$2b2o$3bo, 2bo2bo$2b3o2$o$bo$2b2o$3bo, bo2bo$2b3o2$o2$b3o$4bo, 2bo2bo$2b3o2$o2$b3o$4bo, bo2bo$2b3o3$2o$2b2o$2bo, 2bo2bo$2b3o3$2o$2b2o$2bo)
  • Edgeshootable predecessors: none that I know of
• Cis-boat on dock
  • Fewest cells required: 9 (2b3o3$b2o$bo2$2o$2bo, bo$bobo2$bo$bo$o$2o$o, 2bo$bobo2$bo$bo$o$2o$o, 3bo$bobo2$bo$bo$o$2o$o, bo$2b2o2$bo$bo$o$2o$o, 4bo$2b2o2$bo$b2o2$o$b2o, 4bo$2b2o2$bo$b2o2$o$obo, 2bobo$3bo2$b2o$2bo2$2o$2bo, 2bobo$3bo2$b2o$2bo2$obo$o, 2bobo$3bo2$b2o$2bo2$obo$bo, 2bobo$3bo2$b2o$2bo2$obo$2bo, 2bobo$3bo2$b2o$bo2$obo$o, 2bobo$3bo2$b2o$bo2$obo$bo, 2bobo$3bo2$b2o$bo2$obo$2bo)
  • Edgeshootable predecessors: none that I know of
• Long python
  • Fewest cells required: 8 (2o$o2bo$2bo2bo$4b2o)
  • Edgeshootable predecessors: none that I know of
• Hook with tail
  • Fewest cells required: 8 (2o$bo$o$b3o$3bo) (8 for a non-trivial predecessor (3bo$4bo$ob2obo$o2$2o, 3bo$4bo$ob2o$o4bo2$2o, 3bo$o3bo$2b2obo$o$o$bo, 3bo$o3bo$2b2o$o4bo$o$bo, 4bo$bo$2b2o2$3o$bo$2bo, 3b2o$bo$2bo$3bo$3o$o, 4bo$2bo$bo2bo$obo$o2$2o))
  • Edgeshootable predecessors: none that I know of
• Loaf siamese loaf
  • Fewest cells required: 10 (bo$bob2o$obo$o2bo$2b2o, 3bo$obobo$o2bobo$4bo2$3b2o, 3bo$obobo$o2bo$4b2o2$2b2o, bo$bob2o$o4bo$o3bo$3bo$3bo, bobo$bo2bo$o4bo$o2b2o2$3bo, bo$bob2o$o4bo$o3bo$3bo$4bo, bobo$bo2bo$o4bo$o2b2o2$4bo, ob3obo$o3bo$bo$2bo$2bo, ob3obo$o3bo$bo$2bo$bo, ob3o$o3bobo$bo$2bo$2bo, ob3o$o3bobo$bo$2bo$bo, ob3o$o3b2o$bo$2bo$2bo, ob3o$o3b2o$bo$2bo$bo, 2bo$o2b2o$o3bobo$b2o2$2bo, 2bo$o2b2o$o3bobo$b2o2$bo, 2bo$o2b2obo$o3bo$b2o2$2bo, 2bo$o2b2obo$o3bo$b2o2$bo, 4bo2$obobo$o3b2o$b2o2$2bo, 4bo2$obobo$o3b2o$b2o2$bo, 3bo2$obobo$o3b2o$b2o2$2bo, 3bo2$obobo$o3b2o$b2o2$bo, bobo$bo$obobo$bob2o$2bo)
  • Edgeshootable predecessors: none that I know of
• Symmetric scorpion
  • Fewest cells required: 9 (o$b2o$bo3$3obo$2bo, o$b2o$bo3$3o$2bobo, o$b2o$bo3$3o$2b2o, o$b2o$bo2$bo$b3o$4bo, o$b2o$bo2$o$b2o$3b2o, o$b2o$bo2$o$b2obo$3bo, o$b2o$bo2$o$ob2o$3bo, o4bo$b2o$bo2b2o$6b2o)
  • Edgeshootable predecessors: none that I know of
• Bee hat
  • Fewest cells required: 10 (2o$bo2b3o2$2bo$obo$3bo, 2o$o3b3o2$2bo$obo$3bo, bo3bo$2o3bo$5bo$bo$b3o, o4bo$2o3bo$5bo$bo$b3o, bo3bo$2o3bo$5bo$o$b2o$3bo, o4bo$2o3bo$5bo$o$b2o$3bo)
  • Edgeshootable predecessors: none that I know of
• Trans-rotated buns
  • Fewest cells required: 9 (3bo2$3bobo$bobo$3o$o, 4bo2$3bobo$bobo$3o$o, 5bo2$3bobo$bobo$3o$o)
  • Edgeshootable predecessors: none that I know of
• Snorkel loop
  • Fewest cells required: 9 (2bo$2b2o2$o2b2o$2o3bo, 3bo$2b2o2$o2b2o$2o3bo, bobo$2obobo2$3bo$2b2o, o3bo$2obobo2$3bo$2b2o, o4bo$2obobo2$3bo$2b2o)
  • Edgeshootable predecessors: none that I know of
• Ship tie long boat
  • Fewest cells required: 10 (2o$bo$2b2o2$4bo$4b2o$6bo$6bo, 2o$bo2$2b2o$4bo$4b2o$6bo$6bo, 2o$bo$2b2o2$4bo$4b2o$7bo$7bo, 2o$bo2$2b2o$4bo$4b2o$7bo$7bo, 2o$bo$2b2o2$4bo$4b2obo2$7bo, 2o$bo2$2b2o$4bo$4b2obo2$7bo)
  • Edgeshootable predecessors: none that I know of
• Carrier siamese carrier
  • Fewest cells required: 10 (bo$o$o3bo$b2ob3o2$7bo, o$2bo$bobobo$bo3b3o2$8bo, o$bo$obobo$o3b3o2$7bo, o$bo$o3bo$obob3o2$7bo, 2o$o3bo$2bob3o$o$7bo, 2o$o3bo$2bob3o$bo$7bo, 2o$obobo$4b3o$o$7bo, 2o$obobo$4b3o$bo$7bo)
  • Edgeshootable predecessors: none that I know of
• Cis-Cerberus
  • Fewest cells required: 10 (2bo$b2o$o$2b2o$2bo2bo$4b2o)
  • Edgeshootable predecessors: none that I know of
• Vase
  • Fewest cells required: 10 (bo2$3o$bo27$3o$o2bo)
  • Edgeshootable predecessors: none that I know of
• Krake
  • Fewest cells required: 9 (2o$bo2$2b3o2$bo$2o)
  • Edgeshootable predecessors: none that I know of
• Trans-Cerberus
  • Fewest cells required: 10 (2o$bo$5bo$2b2o$o2bo$2o)
  • Edgeshootable predecessors: none that I know of
• Sidewalk
  • Fewest cells required: 10 (o2bo$b3o4$2b3o$2bo2bo, o2bo$3o4$b3o$bo2bo, o2bo$3o4$b3o$o2bo)
  • Edgeshootable predecessors: none that I know of
• Integral siamese fishhook tail
  • Fewest cells required: 11 (o$bobo$ob2o3$2o$bo$bo$o, o$2bobo$bob2o3$b2o$2bo$2bo$bo, b2o2$2bo$3o2b3o$5bo2bo, o4bo2bo$b2o2b3o$2bo$bo$bo, o$5bo2bo$b2o2b3o$2bo$bo$bo, o4bo2bo$b2o2b3o$2bo$bo$2bo, o$5bo2bo$b2o2b3o$2bo$bo$2bo, bo$bo2bo$ob2o3$2o$bo$bo$o)
  • Edgeshootable predecessors: none that I know of
• Snake siamese snake
  • Fewest cells required: 10 (3bo$bo2bobobo$obobo2bo$5bo, 3bo$bo2bobo$obobo2b2o$5bo, 3bo$2o2bobo$2bobo2b2o$5bo, 2obobobo$ob2o2bo$5bo, 7bo$2obobo$ob2o2bo$5bo, 5bo$b2o2bo2bo$o2bo2b2o$3bo)
  • Edgeshootable predecessors: none that I know of
• Skewed paperchlip
  • Fewest cells required: 10 (3bo$b2o2$2o$2b2o2$b2o$o)
  • Edgeshootable predecessors: none that I know of
• Traffic light
  • Fewest cells required: 4 (3o2$bo)
  • Edgeshootable predecessors: b3o$o3bo, b3o$o3bo$o3bo, 5o, b5o$o5bo, b3o$o$o2bo, 2o$ob2o$3bo
• Honey farm
  • Fewest cells required: 6 (2o2$o2$b2o$bo, o$bo$o2$b2o$bo, bo$o$o2$b2o$bo, bo$bo$o2$b2o$bo, 2o2$o2$b2o$2bo, o$bo$o2$b2o$2bo, bo$o$o2$b2o$2bo, 3b3o$b2o$o, bo$b2o2$2o$o, bo$b2o2$2o$bo, 2o$o2$bo$b2o, 2o$bo2$bo$b2o, 2o$o2$2bo$b2o, 3o3$2o$o, 3o3$2o$bo, 3o3$o$2o, 3o3$bo$2o, 3o2$bo$2o, 2ob3o$o, 2ob3o$bo, o2b3o$2o, bob3o$2o, 2bo$b2o$o2bo$o, o$obo2$2b2o$4bo, bo$obo2$2b2o$4bo, 2bo$obo2$2b2o$4bo, 3o2$3b2o$2bo, o$3o$3b2o, o$3obo$3bo, 2b2o$bo2b2o$o, 2b2obo$bo2bo$o, 3bo$b2ob2o$o, 3b2o$b2o2bo$o, 4bo$o$b2obo$bo, 4bo$o3bo$b2o$bo, o$b2o$o$obo, o$b2o$o$bo$2bo, obo$bo$o$b2o, 3bo2$4o$o, o$2b4o$2bo, 3b2o$o$2obo, 3bo$o$2ob2o, 3bo$o2bo$2o2bo, 3bo$2o2bo$o2bo, 3b2o$2o$o2bo, 3bo$2o$o2b2o, 3b2o$2o$bo2bo, 3bo$2o2bo$bo2bo, 3b2o$bo$2o2bo, 3bo$bo2bo$2o2bo, obo2$bo$2o$o, b2o2$o$2o$bo, obo2$o$2o$bo, b2o2$bo$2o$o, obo2$bo$2o2$o, b2o2$o$2o2$o, obo2$o$2o2$o, b2o2$bo$2o2$o, obo2$bo$2o2$bo, b2o2$o$2o2$bo, obo2$o$2o2$bo, b2o2$bo$2o2$bo, 2bo2$2o$bo2$2o, 2bo2$2o$o2$2o, 2bo$2o$o2$2o, o$2bobo$bobobo, o$bobobo$2bobo, o$bobo$obobo, o$2b2o$bo2b2o, o$3b2o$b2o2bo, o$3bo$b2ob2o, o$2bob2o$bobo, o$bobo$2bob2o, o$bob2o$obo, o$2b2obo$bo2bo, o$3bobo$b2obo, ob2o$bo2bo$o, o$o2b3o$2bo, o$3b3o$obo, o2b3o$2bo$o, 3b3o$obo$o, b3o$obo2$o, b3o$obo2$bo, b3o$obo2$2bo, b3o$2bo$o$o, b3o$2bo$o$bo, b3o$2bo$o$2bo, o$b3o$bo$2bo, o$b3o$bo$3bo, o$b3o$bo$4bo, bo2$b2o2$o$2o, 2bo2$b2o2$o$2o, 2b3o$o$bo$bo, 2b3o$o$bo$o, 2b3o$bo$o4bo, bobo$obo$bo2bo, 2bo2$2o$o$b2o, 2bo$2o$o$b2o, b2o$2b2o$2o, b2o$2bo$2o2bo, bobo$obo$o3bo, o$b2o$b2o2$o, bo$2b2o$bo2$2o, o2$b2o$2o$o, o2$b2o$2o$bo, bo2$2b2o$obo$bo, 2o$4bo$b2o$2bo, 3bo$o$2b3o$bo, 3bo$o$b3o$o, 3o$o$bo$2bo, 3o$o$2bo$o, 3o$2bo$o$o)
  • Edgeshootable predecessors: 3bo$b2ob2o2$o5bo, 2b2o$bo2b2o$o, 3bo$b2ob2o$o, 3b2o$b2o2bo$o, 2b3o$bo$o4bo
• Blockade
  • Fewest cells required: 6 (bo2$2ob2o2$2bo, bo2$2obo$4bo$2bo, bo2$2obo2$2bobo, obo2$2b2o2$3bobo, 2bo$o$2b2o2$3bobo, 2bo2$ob2o2$3bobo, 2bo$o$2b2o$5bo$3bo, 2bo2$ob2o$5bo$3bo, 2bo2$ob2obo2$3bo, 2b3o$2o2$o, 2b3o$2o2$bo, bo$o2b2o$bo$3bo, bo$2b2o2$2o$2bo, 2b2o$2obo2$o, o$3o$3bo$4bo, b2o$o2bo$3b2o, o2$b2o2$3b3o, 2bo$2o$2bobo$3bo, 2bo$2o$2bo$3b2o, bo2$2b2o$bo$o$o, bo2$2b2o$bo$o$bo, 2b3o$bo$o$2bo, bo$2b2o$bo$o$bo, bo$2b2o$bo$o$o, o$2bo$bob2o$5bo, o$bo$ob2o$4bo, o2$b5o, 3bo$b2o2$bo$obo, obo$bo$3b2o$2bo, o$b2o$3b2o2$2bo, 2bobo$3bo$bo$obo, o$3o2$3b2o, o$3o$4bo$3bo, o$3obo2$3bo, 3bobo2$2b2o$2bo$o, 2bobo2$b2o$bo$o, 3bo$5bo$2b2o$2bo$o, 2bo$4bo$b2o$bo$o, 3bo2$2b2obo$2bo$o, 2bo2$b2obo$bo$o, o$b2o$2b2o$4bo, o2$b4o2$5bo, 3o$3b2o2$2bo, o$b2o2$bo$bobo, 2b3o2$bo$o$bo, 2b3o2$bo$bo$o, 2b3o2$bo$o$o, 2b3o2$bo2$2o, 2b3o$2bo$o$bo, 2b3o$2bo$o$2bo, 2b3o$2bo$bo$o, 3b2o$o$b2o$o, 3bo$o3bo$b2o$o, 3bo$o$b2obo$o, 2bo$bobo$4bo$2o, o$bo$b2o$3bo$4bo, o$bo$b2o2$3b2o, o$bo$b2o$4bo$3bo, o$bo$b2obo2$3bo, 5bo$4bo$2b2o$2bo$o, 4b2o2$2b2o$2bo$o, 4bo$5bo$2b2o$2bo$o, 4bo2$2b2obo$2bo$o, o$bo$b3o2$4bo, 5bo$3bo$b3o2$o, 3bo2$ob2o$bo$bo, 2bo2$ob2o$bo$bo, 3bo2$ob2o$bo$o, 2bo2$ob2o$bo$o, o2$2obo$2bo$4bo, bo2$2obo$2bo$4bo, o2$b3o$4bo$5bo, o$2bo$bo$2bobo$3bo, obo$bo$2bobo$3bo, b3o$o2$2o, 3bo$b2o$bo2$2o, 3bo2$b2o$bo2$2o, o$bo$2b2o$4bo$5bo, 2b2o$bo2$2o$o, 2b2o$bo2$2o$bo, bobo$bo2$2o$o, bobo$bo2$2o$bo, bo$2o$b2o$3bo, bo$2o$b2o2$3bo, bo$2b2o$o$3bobo, bo$2b2o$o4bo$3bo, bo$2b2obo$o$3bo, o2$b2o$2b3o, o$b2o$2b3o, 2b3o$obo2$o, 2b3o$obo2$bo, 2b3o$obo2$2bo, 3o2$2o$o, 3o2$2o$bo, b3o2$o$obo, bo$2b2o$o$bo$bo, bo$2b2o$o$bo$o, bo2$2b2o$2o2$bo, bo2$2b2o$2o2$o, bo$3b2o$2o$3bo, 2o$3bo$bo$3b2o, 2o$3b2o$bo$3bo, bo$o2b2o$bo$3bo, o$b2o2$bo$2b2o)
  • Edgeshootable predecessors: b3o$o3bo$o$bo, b4o$o4bo$6bo
• Fleet
  • Fewest cells required: 7 (3o$o2bo$o$bo, b3o$bo2bo$o$2bo, 3bo$b2o$bo2bo$o$2bo, 2bo$bobo$o3bo$bo$2bo, o$o$b2o2$3bo$3b2o, 2o$obo2$2bobo$2bo, 2o$obo2$2bobo$3bo, 2o$obo2$2bobo$4bo, 2o$o$2bo$2bobo2$2bo, 2o$o$2bo$2bobo2$3bo, 2o$o$2bo$2bobo2$4bo, 2o$o2bo$2bo$bobo, 2o$o$2b2o$2bobo, 2o$o$2b2o$2bo$4bo, obo$bobo$3bo$4b2o, 2bo$2obo$3bo$4b2o, o$b2o$bobo$2bobo, o$b2o$bobo$2bo$4bo, o$b2o$bo$2b2o2$4bo, o$b2o$bo2bo$3bo$2bo, o$b2o$bobo$4bo$2bo, bo$b3o$o$4b2o, bo$b3o$o4bo$4bo, bo$b3obo$o$4bo, o$b2o2bo$o2bo$4bo, 3bo2$b3o$o$o$bo, 3bo$b2o$o2bo$o$bo, 2bo$bobo$o3bo$2o, 2b2o$bobo$bo$o$2bo, 2bobo$bobo$bo$o$2bo, 2bo$bob2o$bo$o$2bo, 3bo$bo$2b2o$o$2o, 2b3o$bo$o4bo$o, 2b3o$bo$o4bo$bo, o$2o$ob2o2$2bo, o$b2o2$3b2o$5bo$2bo)
  • Edgeshootable predecessors: 3o$o2bo$o$bo
  • Note: A blonk-tie only requires six cells.
• Bakery
  • Fewest cells required: 7 (b3o2$3o$bo, b3o2$2obo$bo, 2b3o2$ob2o$2bo, o$2o2$o$b2o2$3bo, bo$2o2$o$b2o2$3bo)
  • Edgeshootable predecessors: 2bo$b3o$o3bo$o$bo
• Interchange
  • Fewest cells required: 7 (bo$obo$bo2$3o, 3bo$b2ob2o$o$6bo, 5o$o$3bo, bo2bo$ob3o$bo, o3bo$ob3o$bo, 2bo$obob3o$2bo, obo$2bo$bo$b3o, obo$2bo$bo$2b2o$bo, 2bo$obo$bo$2b2o$bo, 2bo$2obo$b2o$4bo)
  • Edgeshootable predecessors: 3bo$b2ob2o$o$6bo
• Beethoven
  • Fewest cells required: 7 (3ob3o$3bo)
  • Edgeshootable predecessors: b3o$o3bo$o3bo$o3bo, 3ob3o$3bo
  • Note: It often results when one side of a traffic light predecessor hits something.
• R sequence
  • Fewest cells required: 5 (o$3o2$bo, 3o$3bo$3bo, 3bo$b2o$o$bo, o$3bo$2o$2bo, 3bo$o$b2o$o, o3bo$2b2o$bo, 2bo$3o$4bo)
  • Edgeshootable predecessors: 3o$3bo$3bo, b3o$o3bo$5bo, 3o$o2bo$bo, o$b2o$3b4o
• B sequence
  • Fewest cells required: 6 (3o$o2bo$o, b3o$bo2bo$o, 2b3o$2bo2bo$o, 3o$o2bo$4bo, 5o2$o, o$bob3o$bo, o$b2o$o2bo$4bo, bo$2b2o$o2bo$4bo, bo$2b2o$o2bo$5bo, o$b2o$bo2$2b2o, o$b2o$bo2$bobo, bo$b3o$o$4bo)
  • Edgeshootable predecessors: 3o$o2bo$o, b3o$bo2bo$o, 2bo$bobo$o3bo$bo, 2bo$b3o$o3bo$o, 3o$o$o$b2o, 3o$o2bo$4bo
  • Note: An R sequence only requires five cells, although it will eventually distrub the B sequence's first block unless something disturbs the R sequence first.
• ∏ sequence
  • Fewest cells required: 5 (3o$o2bo, bo$3o2$bo)
  • Edgeshootable predecessors: 3o$o2bo, b2o$o$o$2o
• Century sequence
  • Fewest cells required: 6 (b3o$o$o$bo, 2obo$3b2o$o, 2ob2o$3bo$o, bob2o$o2bo$o, bobo$o2b2o$o, bo2bo$bob2o$o, bob2o$bo2bo$o, o2b2o$bobo$o, o2bo$bob2o$o, 2bo$bobo$o3bo$o, 2o$o$b2o$3bo, 2bo$bob2o$bo$o, 2bobo$bobo$bo$o, 2b3o$2o$bo, b3o$bo$o$2bo, 2b3o2$bo$2o, 4o2$4b2o, 2b4o$o$bo, ob4o2$bo, o2b3o$2bo$bo, o$o3bo$bo$2b2o, bo$o3bo$bo$2b2o, o$5bo$b3o$3bo, 5bo$o3bo$2b2o$bo, 2o$o$2b2o$bo)
  • Edgeshootable predecessors: b3o$o$o$bo, b3o$o3bo$o4bo, 2bo$bobo$o3bo$o
• Queen bee
  • Fewest cells required: 7 (o$b2obo$bobobo, o$b2ob2o$bobo)
  • Edgeshootable predecessors: 2b3o$bo3bo$o5bo$o5bo, 2b3o$bo3bo$o5bo$bo3bo
  • Note: It often results when one side of a honey farm predecessor hits something.
• Wing
  • Fewest cells required: 6 (3o$3bo$4bo$5bo, 3bo$b2o$o$o$bo, o2$2o$3bo$2b2o, bo2$2o$3bo$2b2o, 2o$bob2o$2bo, 2o$bobo$2bobo, 2o$o$2b2o$4bo, bobo$2bo$o$2o)
  • Edgeshootable predecessors: 3o$3bo$4bo$5bo, 3bo$b2o$o$o$bo
• Two-glider octomino
  • Fewest cells required: 6 (b5o$o, 2o$bo$3b2o$2bo, 2o$bo$2bo$3b2o, 2o$bo$2bobo$3bo, 2bo$2b2o$2o2$o, 2bo$2b2o$2o2$bo)
  • Edgeshootable predecessors: b5o$o, 2o$bo$2bobo$3bo
• Herschel
  • Fewest cells required: 6 (o$obo$3b2o$2bo, o$b2o$3b2o$2bo)
  • Edgeshootable predecessors: o$obo$3b2o$2bo
  • Note: An R sequence only requires five cells.
• Herschel without its first natural glider
  • Fewest cells required: 7 (o$b2o$o2$b3o, bo$bo$ob3o$bo, 3bo$3obo$4bo$6bo, bo$5bo$ob3o2$o, 2o$o3$3o2$bo, 2o$bo3$3o2$bo, o$2o3$3o2$bo, bo$2o3$3o2$bo, o$2o2$bo$bo$obo, bo$2o2$bo$bo$obo, bo2$2obo$ob2o, bo$2ob2o$2bo$bo, bo$2obo$2bobo$bo, bo$2ob2o$2bo$o, bo$2obo$2bobo$o, bo$2obo$2b2o$o, 2bo$ob2o$3b2o$bo, o$b2o2$bo$2b2o$bo, obo$o$o2$b3o, o$bo$bo$2bo$3b2o2$2bo, o$b2o$o2bo$4bo$3bo, o$b2o$o2bo$4bo$4bo, o$b2o$bo$4bo$2b2o)
  • Edgeshootable predecessors: b3o$o2bo$2o2bo, 2bo$b3o$o2b2o$o, b3o2$o$o$obo
  • Note: An R sequence only requires five cells, and a Herschel only requires six cells.
• Dove sequence
  • Fewest cells required: 6 (2b3o$bo$bo$o)
  • Edgeshootable predecessors: 2b3o$bo$bo$o
  • Note: It forms when one half of a blockade sequence is destroyed before interacting with the other half again.
• I sequence
  • Fewest cells required: 6 (2b2o$2obo2$bo, o$2o$b2o2$3bo, o$bo$2bo$3b2o$5bo, 4bo2$2b2o$bo$o$o, 4bo2$2b2o$bo$o$bo, o$b2o$3bo$4b2o, 2bo2$2b2o$bo$o$o, 3bo2$2b2o$bo$o$o, 2bo2$2b2o$bo$o$bo, 3bo2$2b2o$bo$o$bo)
  • Edgeshootable predecessors: 5bo$o3bo$ob2o$bo, o$b2o$3bo$4b2o
• Thunderbird
  • Fewest cells required: 6 (bo$o2b3o$bo)
  • Edgeshootable predecessors: none that I know of
• Teardrop
  • Fewest cells required: 6 (2b3o$o$o$o, 3o$o$bo$bo, ob3o$o$3bo, obo$bob2o$bo, obobo$bobo$bo, ob3o$o$bo)
  • Edgeshootable predecessors: 2b3o$o$o$o
• Butterfly
  • Fewest cells required: 6 (b3o$o$o$o)
  • Edgeshootable predecessors: none that I know of
• E sequence
  • Fewest cells required: 6 (3bo$2b2o2$bo$2o, 2bo$2b2o2$bo$2o)
  • Edgeshootable predecessors: none that I know of
• F sequence
  • Fewest cells required: 6 (bo$bo$o$2bo$2bo$2bo, o$bo$o$2bo$2bo$2bo, bo$o$o$2bo$2bo$2bo)
  • Edgeshootable predecessors: none that I know of
• Thompson's methuselah
  • Fewest cells required: 6 (2b3o$bo$2o)
  • Edgeshootable predecessors: none that I know of
• Blonk-tie
  • Fewest cells required: 6 (bo$2obo$3bo$4bo, 2o$bo2$bobo$bo, 2o$bo2$bobo$2bo, 2o$bo2$bobo$3bo, 3bo$b2o2$2o$o, 3bo$b2o2$2o$bo)
  • Edgeshootable predecessors: 2o$o$2o2bo$2b2o
• Procrestinator sequence
  • Fewest cells required: 7 (b3o$bo2$2o$2bo, 3bo$b2o$o2$2o$2bo, b2o$3bobo$o3bo$6bo, 2bo$bobobo$o3bo$6bo, b2o$3bobo$o3bo$5bo, 2bo$bobobo$o3bo$5bo, bo$o$ob3o$5bo, bo$b2o$o$b2o2$o, bo$b2o$o$o$2bo$bo, bo$b2o$o$o$2bo$o, bo$2o$2bo$2bo$o$o, b2o$bo$o$obo2$bo, b2o$bo$o$obo2$o, 2o$bo$2bo$obo2$o, bo2$3o$2o2$o, bo2$3o$2o2$bo, 4b3o$2b2o$o$o, 4b3o$ob2o2$o, o$b2o$2bobo$6bo$6bo, o$b2o$2bobo$5bo$6bo, o$b2o$2bob2o2$6bo, o$b2o$2bobo2$5b2o, o$b2o$2bobobo2$6bo, o$b2o$2bobobo2$5bo, o$b2o$2bobo$6bo$5bo, o2$b2o$2bobo$6bo$6bo, o2$b2o$2bobo$5bo$6bo, o2$b2o$2bob2o2$6bo, o2$b2o$2bobo2$5b2o, o2$b2o$2bobobo2$6bo, o2$b2o$2bobobo2$5bo, o2$b2o$2bobo$6bo$5bo, 3b2o$2bo$bo$obo2$o, 3b2o$2bo$bo$obo2$bo, 3b2o$2bo$bo$obo2$2bo, 3b2o$2bo$bo$2bo$o$o, 3b2o$2bo$bo$2bo$o$bo, 3b2o$2bo$bo$2bo$o$2bo, o$2bo$o$bo$2b2o$4bo, bo$2bo$o$bo$2b2o$4bo, 2bo$2bo$o$bo$2b2o$4bo, bo$2bo$o2b2o$5bo$6bo, obo$2o2$2b2o$bo, bo$o$2o2$2b2o$bo, 2bo$o$2o2$2b2o$bo, o$o$3o2$3b2o, o$o$3o$4bo$3bo, o$o$3obo2$3bo, 5bo$4bo$2b3o2$2o, 5bo$4bo$2b3o$o$bo, 5bo$4bo$ob3o2$bo, 6bo$4bo$2b3o2$2o, 6bo$4bo$2b3o$o$bo, 6bo$4bo$ob3o2$bo, 2b3o$2bo$o$o$2bo, 2b3o$2bo$bo$o$2bo, 2b3o$2bo$o$2bo$2bo, 2b3o$2bo$o$bo$2bo, 2b3o$2bo$o$2bo$bo, 2b3o$2bo$o$2bo$o, 2bo2$3b2o$2bo$bo$obo, 2bo2$3b2o$2bo$bo$2bo$o, obo$o$3bo$b3o, b2o$o$3bo$bo$2o, 3o2$o$2o$2bo, 3o2$o$2o2$2bo, o$b2o2$3bo$3o, b3o$o$bo$b2o, 3bo$b2o$o$b2o$bo, 4bo$2bo$2bo$bo$b2o2$o, 4o$bobo$5bo, 3b2o$o$bobo$b2o, 2o$5bo$bobo$2b2o, 2bo$2o$o$2b2o$4bo, 2bo2$2o$o$2b2o$4bo, o$3o2$3bo$bobo, o$3o2$3bo$b2o, 2b3o$bo2$2obo, 3o$3bo2$2b2obo, 2bo2$3b2o$obo$bo$bo, 3o$o$3bo$2bobo, b3o$o$3bo$4b2o, b3o$4bo$bo$obo, 2bo$bobo$4bo$b2o$o, bo$2b2o2$b2o$o$bo, b2o$3bo$o3b2o2$3bo, 2bo$bobo$o3b2o2$3bo, 2b2o$bo$o3b2o$3bo, 2b2o2$obo$bo$o$2bo, o2b3o$bo$2bo$3bo, 3b3o$2o$2bo$2bo, bo$2o$bo$b2o$3bo, bo$2o$bo$b2o2$o, bo$2o$bo$b2o2$bo, bo$2o$bo$b2o2$2bo, bo$2o$bo$b2o2$3bo, bo$bo$ob2obo2$3bo, bo$bo$ob2o$5bo$3bo, bo$bo$ob2o2$3bobo)
  • Edgeshootable predecessors: none that I know of
• U-turner
  • Fewest cells required: 6 (o$o$o2$2o$2bo)
  • Edgeshootable predecessors: 2bo$b3o$o$o$bo
• Angel
  • Fewest cells required: 6 (o$bo2bo$bobo$2bo, b3o$o$o$2bo, 2bo$bobo$b2o2$o, 3bo$bobo$b2o2$o, 2b2o$bo$b2o2$o, 2bo$bobo$obo2$o, 3bo$bobo$obo2$o, 2bo$bobo$obo2$bo, 3bo$bobo$obo2$bo, 2bo$bobo$obo2$2bo, 3bo$bobo$obo2$2bo, 3bo$b2o$b2o2$o, o$ob2o$bo$4bo, bo$obo$bobo$4bo, o$obo$bobo$4bo, 2bo$obobo$3b2o, obo$2bobo$3b2o, 2bo$obobo$3bobo, obo$2bobo$3bobo, 2bo$obob2o$3bo, obo$2bob2o$3bo, 4bo$2bo$bobo$bo$o, 3bo$2bo$bobo$bo$o, obo$o$b2o$3bo, 2o$o2$3o, bo2bo$ob2o$bo, o$2o2$obo$o, o$2o2$obo$bo, o$2o2$obo$2bo, bo$2o2$obo$o, bo$2o2$obo$bo, bo$2o2$obo$2bo, 2o$2b2o$obo, 2o$2b3o$bo, 2b3o$bo2$2o, 2bo$bob2o$o2bo, obo$o$bobo$2bo, bo$obo$bo$3b2o, bo$obo$bo2bo$3bo, bo$obobo$bo$3bo, 3b3o$b2o2$o)
  • Edgeshootable predecessors: 3o$obo$o2bo, b3o$o$o$b2o
• Long bun sequence
  • Fewest cells required: 7 (obo$o3b3o$3bo, obo3bo$o3b2o$4bo, 6bo$obo$o3b2o$4bo, b2o3bo$o3b2o$4bo, 6bo$b2o$o3b2o$4bo, obo3bo$bo2b2o$4bo, 6bo$obo$bo2b2o$4bo, o$4bo$b2o2b2o$2bo, o3bo$b2o2b2o$2bo, o$obo2$b2o$2o, o$obo2$2o$b2o, o$obo2$2o$bobo, bo$obo2$2o$bobo, 2bo$obo2$2o$bobo, 2obo2$bo$bo$2o, 2obo2$bo$bo$b2o, b3o2$obo$2b2o, 3o2$2o$bobo, obo$2bo2$bobo$2o, 2o$2bo2$bobo$2o, obo$bo2$bobo$2o, 3bo$b2o2$ob2o$2bo, 2bo$2o2$2obo$bo, o$4o$o$2bo, o$4o$o$3bo, bo$o2b3o$2bo$2bo, o$bob3o$2bo$2bo, o$b2ob2o$3bo$2bo, o$b2obo$3bobo$2bo, o$b2ob2o$3bo$bo, o$b2obo$3bobo$bo, o$ob2o$3b2o$bo, o$ob2o$3bobo$bo, o$ob2obo$3bo$bo, o$ob2o$3bobo$2bo, o$ob2obo$3bo$2bo, o$4o$4bo$o, o$3o$3b2o$o, o$3obo$3bo$o, bo$obob2o$3bo$o, bo$obobo$3bobo$o, bo$obo2bo$3b2o$o, o2$b2ob2o$bobo, o2$b2obo$bobobo, o2$b2o2bo$bob2o, o2$ob2o$bob2o, o2$ob2obo$bobo, o2$ob2o$bobobo, bo2$b3o$o2b2o, bo2$b3obo$o2bo, bo2$b3o$o2bobo, bo2$4o$o3bo, o2$3o$o2b2o, o2$3obo$o2bo, 2bo2$b4o$o2bo, o2$ob3o$bobo, 2bo2$b3o$o2b2o, 2bo2$b3obo$o2bo, 2bo2$b3o$o2bobo, o2$4o$o3bo, bo2$3o$o2b2o, bo2$3obo$o2bo, bo2$b4o$o2bo, bo2$5o$3bo, ob4o$o$bo, 2bo$bo$b2o2$2o$2bo, 3bo$bo$b2o2$2o$2bo, bobo$b2o2$2o$2bo, b3o$o5bo$4b2o, b3o$o4b2o$4bo, b3o$o4bo$4bobo, o$bo$2bo$o$3o, o$o$2bo$o$3o, bo$o$2bo$o$3o, 2bo$o$2bo$o$3o, b2o2bo$bobo$o2bo, 2b2o2bo$2bobo$o3bo, obo2bo$bobo$o2bo, bobo2bo$2bobo$o3bo, 2b2o$2bob2o$o2bo, bobo$2bob2o$o2bo, b2o2$o$2o$b2o, obo2$o$2o$b2o, 2b2o$2obo$5bo$2bo, 3bo$o3bo$b2obo$o, o2b2o$2o$obo, o2bo$2o2bo$obo, o2bo$2o$obobo, 3bo2$2b3o$o$2o, 2o$ob2o$o$4bo, 2b3o$bo$bo3bo$o)
  • Edgeshootable predecessors: 2b3o$bo$bo3bo$o, b3o$4bo$o3bo$o4bo
• R-turner sequence
  • Fewest cells required: 7 (2bo$b3o$o$bo$bo, 2bo$b3o$o$bo$o, 2b2o$b2o$o$o$bo, 2bobo$b2o$o$o$bo, 2bo$b2obo$o$o$bo, 2b2o$bo$o3bo$2o, bobo$2bo$o3bo$2o, 3bo$b2o$o3bo$o$bo, 2b2o$bobo$bo$obo, 2bobo$bobo$bo$obo, o$bo$o$2b2o2$obo, bo$bo$o$2b2o2$obo, o$bo$bo$2bo2$ob2o, o$bo$bo$2bo2$b2obo, 3o2$b2o$2bobo, 2bo$b2o$o2b2o$3bo, 2bo$b2o$3b2o$o2bo, bo$b2o$3bo$o2b2o, bo$2o$2b2o$bo2bo, o$2o$2bo$bob2o, o$2o$2bobo$bobo, bo2$b2o$o2bo$3b2o, 2bo2$b2o$o2bo$3b2o, bo2$2b3o$bo$2o, b2o$2bo$2o2bo$o)
  • Edgeshootable predecessors: none that I know of
• Grate
  • Fewest cells required: 7 (3b4o2$b2o$o, 3o$bo$2bo$2bo$4bo)
  • Edgeshootable predecessors: none that I know of
• Loafer foot
  • Fewest cells required: 7 (o2$b2o3bo$3b3o, bo2bo$3obo$o, 3o$bob2o2$2bo, 2b2o$2ob2o2$bo, 2b2o$2obobo2$bo, 2b2obo$2obo2$bo)
  • Edgeshootable predecessors: o2$b2o3bo$3b3o, b3o$o3bo$3bo$2o, b3o$o2bo$o$3b2o
• Octomino II
  • Fewest cells required: 7 (2bo$2b2o2$bo$obo$bo, 3bo$2b2o2$bo$obo$bo, 2b2o$3bo2$bo$obo$bo, 2b2o$2bo2$bo$obo$bo, 2bo$bo$o2bo$o$2o, 3bo2$3o$o$o$bo, 3bo$2bo$2o$o$o$bo, 2b2o2$2o$o$o$bo, 2bo$3bo$2o$o$o$bo, 2bo2$2obo$o$o$bo, b3o2$o$b2o2$3bo, 3bo2$ob2o$bo$bo$2bo, 4bo$3bo$2bo$bo$bo$obo, 2bo$obo$2bo$2b2o$3bo, 2bo$obo$2bo$2b2o2$3bo, 2bo$obo$2bo$2b2o2$2bo)
  • Edgeshootable predecessors: 3bo$2bo$2o$o$o$bo, 2b2o2$2o$o$o$bo, 3bo$2bo$2o$o$o$b2o, 2b2o2$2o$o$o$b2o
• Phi spark
  • Fewest cells required: 6 (4o$4bo$5bo, b3o$o3b2o, b3obo$o3bo, o2b3o$b2o, 2ob3o$2bo, bob3o$obo, 2bo$bo$bo2$2o$o, 2bo$2bo$bo2$2o$o, b2o2$bo2$2o$o, bo$2bo$bo2$2o$o, 2bo$bo$bo2$2o$bo, 2bo$2bo$bo2$2o$bo, b2o2$bo2$2o$bo, bo$2bo$bo2$2o$bo, bo$ob2o$bo$4bo, bo$ob2o$o$3bo, 2o$2b2o$o$2bo, o2b3o$2bo$2bo, obo$2obo$o, 2bo2$4o$o, 2o$o2$2o$o, 2o$o2$2o$bo)
  • Edgeshootable predecessors: 4o$4bo$5bo, 2b3o$bo3bo$o5bo, b3o$o3b2o
  • Note: An R sequence only requires five cells.
• P spark
  • Fewest cells required: 4 (b3o$o, 2o$bo$2bo, o$2o2$2bo, bo$2o2$2bo)
  • Edgeshootable predecessors: b3o$o, b2o$o2bo$4bo
• Z hexomino
  • Fewest cells required: 6 (b2o$o4bo$3b2o, b2o$o3b2o$3bo, obo$bo2b2o$3bo, obo$bo2bo$3bobo, 2bo$2o2b2o$3bo, obo$bo3bo$3b2o, o2$2o$2bo2$b2o, bo2$2o$2bo2$b2o)
  • Edgeshootable predecessors: none that I know of
• Six cell row
  • Fewest cells required: 6 (4o$o2bo, obo$bo$bo$obo, o2bo$b2o$bo2bo, 3o$bo2$obo, o2$b2o$2o2$2bo)
  • Edgeshootable predecessors: 4o$o2bo

[Entity Valkyrie 2]

Beethoven

• Fewest cells required: 9 (b3o$o3bo$o3bo$o3bo)

Found an 8-cell Beethoven predecessor:

Code: Select all

x = 9, y = 3, rule = B3/S23
7bo$3o4b2o$bo4bo!

EDIT: 8, 9, and 10 cell edgeshootable predecessors of the standard spaceships:

Code: Select all

x = 35, y = 4, rule = B3/S23
3b4o8b5o8b6o$2bo4bo6bo5bo6bo6bo$bo11bo12bo$o11bo12bo!

Also:
bo$3o$2o2o is not a predecessor of the century.
bo$3o is not a predecessor of the P spark.

[MathAndCode]

Found an 8-cell Beethoven predecessor:

Code: Select all

x = 9, y = 3, rule = B3/S23
7bo$3o4b2o$bo4bo!

Thank you. I have put it in.

8, 9, and 10 cell edgeshootable predecessors of the standard spaceships:

Code: Select all

x = 35, y = 4, rule = B3/S23
3b4o8b5o8b6o$2bo4bo6bo5bo6bo6bo$bo11bo12bo$o11bo12bo!

Thank you again. I have also put those in.

bo$3o$2o2o is not a predecessor of the century.
bo$3o is not a predecessor of the P spark.

Whoops. They should be bo$3o$2b2o and b3o$o. I've fixed them now. Thank you for alerting me to the problem.

[MathAndCode]

I would appreciate help finding all of the minimal predecessors. I especially suspect that I'm missing minimal predecessors for the honey farm, blockade, century sequence, and wing sequence.

[Entity Valkyrie 2]

I would appreciate help finding all of the minimal predecessors. I especially suspect that I'm missing minimal predecessors for the honey farm, blockade, century sequence, and wing sequence.

All six cells.

Code: Select all

x = 36, y = 4, rule = B3/S23
b2o8bo10bo9b2o$2obo7b2o8b3o9bobo$2bo9b2o9b2o9b2o$13bo!

[MathAndCode]

All six cells.

I have six-cell predecessors, but I do not think that I have all of the six-cell predecessors. That is where I want help.



Edit:

Code: Select all

x = 11, y = 12, rule = B3/S23
8bobo$8b3o$9b2o3$3bo$2b3o$b2obo$2o$b2obo$2b3o$3bo!

That is a ∏→B partial with necessary information transmission speed 18c/20, which makes it very promising. Please post it here.



Another edit: It also has a ∏→∏ with necessary information transmission speed 9c/10.

Code: Select all

x = 13, y = 5, rule = B3/S23
2b3o$bo2bo4b2o$o9bobo$bo2bo3bobo$2b3o3bo!

In addition, it edgeshoots a ∏ with wonderful clearance, enough to fit into ∏F39C.

Code: Select all

x = 62, y = 27, rule = LifeHistory
54.3D$54.2BD$53.DB2D$53.2D3B$52.6B$52.5B$52.6B$47.A4.6B$47.3A2.7B$50.A.7B$49.A.7B$49.2A.6B$52.7B$52.7B$52.6B2.B$52.B3D2B.B2A$52.3BD4B2A$52.B3D2B.2B$52.6B$52.7B$52.7B$52.6B$53.6B$2.2A9.A10.A8.2A18.7B$A.A9.3A8.2A7.A.2A15.A8B$2A9.2A9.2A9.A16.A.A2.4B$22.A27.2A5.2B!
#C [[ PASTEMODE COPY PASTET 91 PASTE B! 48 14 ]]

[JP21]

Not worth adding these:

Code: Select all

x = 15, y = 6, rule = B3/S23
12bo$2bo$bo8b2ob2o$o2b2o5bo2bo$o2bo6bo$2o9bo!

[MathAndCode]

Not worth adding these:

Code: Select all

x = 15, y = 6, rule = B3/S23
12bo$2bo$bo8b2ob2o$o2b2o5bo2bo$o2bo6bo$2o9bo!

They have minimal size and are not already present, so they are worth adding. Thank you for providing them, and please post any more that you find.

[ColorfulGalaxy]

Tub:
xp0_525
xp0_259
xp0_4l4

[MathAndCode]

Tub:
xp0_525
xp0_259
xp0_4l4

Thank you. I have added the tub to the list.

[ColorfulGalaxy]

Tub:
xp0_525
xp0_259
xp0_4l4

Thank you. I have added the tub to the list.

Wait, how could you read apgcode?

The two most common loaf parents: xp0_137 xp0_357
Sorry, I'm not sure which one is the more common.

[MathAndCode]

The two most common loaf parents: xp0_137 xp0_357

I only include predecessors of minimal size, and I don't include predecessors that are descendants of other minimally-sized predecessors.

[hotdogPi]

• Thompson's methuselah
  • Fewest cells required: 6 (b3o$2bo$2o$2o)
  • Edgeshootable predecessors: none that I kow of

That pattern has 8 cells.

[MathAndCode]

That pattern has 8 cells.

Thank you for alerting me. I have fixed it.

[ColorfulGalaxy]

That pattern has 8 cells.

Thank you for alerting me. I have fixed it.

Another tub: xp0_345
Loaf: xp0_12s

Also, what is a blonk-tie?

none that I kow of

What does "kow" mean?

[MathAndCode]

Another tub: xp0_345
Loaf: xp0_12s

I already have those.

Also, what is a blonk-tie?

It's a methuselah.

What does "kow" mean?

It was a typo. You're sounding like the Trump-impersonating accounts, which makes sense.

[ColorfulGalaxy]

I found a six-bit glider parent during my polyomino census. (see my wiki article)

Code: Select all

x = 20, y = 4, rule = B3/S23
bo6bo6bo$2bo5bobo4b3o$o2bo6b2o5b3o$obo8bo!

Also, you might have missed the pulsar.

Code: Select all

x = 23, y = 3, rule = B3/S23
3bo15bo$bo3bo10bo5bo$obobobo10b2ob2o!

[MathAndCode]

I found a six-bit glider parent during my polyomino census. (see my wiki article)

I only include predecessors of minimal size.

Also, you might have missed the pulsar.

I didn't miss the pulsar. I chose to not cover it yet because I want to cover more common objects first. Also, there are many more seven-cell pulsar predecessors.

Code: Select all

x = 59, y = 46, rule = B3/S23
52bo$51bo2b2o$49b2o2bo9$29bo3bo$29bobobo$29bo3bo2$3bo$obo3bo$bo2b2o$55b
o$54bo3bo$52b2o2b2o6$19bo$16bobo2bo17bo$17bo2bobo13bobo2b2o$37bo2bo9$
55bo$53b2ob2o$52bo5bo2$30bo$14bo12bo4bo$11b2o3bo11b2obobo$13bobobo!

I doubt that those are all of them.

[ColorfulGalaxy]

I found a six-bit glider parent during my polyomino census. (see my wiki article)

I only include predecessors of minimal size.

Also, you might have missed the pulsar.

I didn't miss the pulsar. I chose to not cover it yet because I want to cover more common objects first. Also, there are many more seven-cell pulsar predecessors.

Code: Select all

x = 59, y = 46, rule = B3/S23
52bo$51bo2b2o$49b2o2bo9$29bo3bo$29bobobo$29bo3bo2$3bo$obo3bo$bo2b2o$55b
o$54bo3bo$52b2o2b2o6$19bo$16bobo2bo17bo$17bo2bobo13bobo2b2o$37bo2bo9$
55bo$53b2ob2o$52bo5bo2$30bo$14bo12bo4bo$11b2o3bo11b2obobo$13bobobo!

I doubt that those are all of them.

That six-bit one could be edgeshootable.

[MathAndCode]

That six-bit one could be edgeshootable.

Thank you. If you had told me that you posted it specifically because it's edgeshootable, I would have added it right away.

[otismo]

That six-bit one could be edgeshootable.

Thank you. If you had told me that you posted it specifically because it's edgeshootable, I would have added it right away.

WHERE ?

Where is the six-bit Pulsar-Predecessor ?

( Pulsars fascinate me )

Thank You !

Cheers !

[MathAndCode]

Where is the six-bit Pulsar-Predecessor ?

I'm pretty sure that ColorfulGalaxy was talking about a six-bit glider predecessor.

[otismo]

Where is the six-bit Pulsar-Predecessor ?

I'm pretty sure that ColorfulGalaxy was talking about a six-bit glider predecessor.

well Thank You for the seven-bit ones !

Cheers !

[otismo]

here is an 8x8 17bit PaperClip Predecessor :

Code: Select all

x = 8, y = 8, rule = B3/S23
4bo$o2b3o$2bob2o$b2o$2b2o$3bo2b2o$5bo$5bo!

[MathAndCode]

here is an 8x8 17bit PaperClip Predecessor :

I already know of two paperclip predecessors with less than half of the population and less than a third of the bounding box area.

Code: Select all

x = 5, y = 13, rule = B3/S23
bo$2o2$b4o6$o$2o2$b4o!