ConwayLife.com

I can't seem to find anything about a diagonal lightspeed fuse on the wiki, so this may be new, but it probably isn't x = 37, y = 39, rule = B3/S23 $7bo$6bobo$7bobo$8bobo$9bobo$10bobo$11bobo$12bobo$13bobo$14bobo$15bobo $16bobo$17bobo$18bobo$19bobo$20bobo$21bobo$22bobo$23bob4o$24bob4o$24b 2ob4o$25b2o...