This HWSS seed from

oblique's sscs search program looks like it should be a significant improvement on the original Caterpillar's HWSS recipe:

**EDIT:** Updated to show more HWSS constructions. There's only one HWSS in the helix that can't be built with this seed -- unfortunately, the location with red gliders is one cell too close to the next HWSS. Should be possible to dig up a more expensive seed for that one HWSS:

Code: Select all

```
x = 106, y = 1437, rule = LifeHistory
3.A$.A.A$2.2A4$.A$2.A$3A$10.2D$10.2D2.2D$14.2D5$10.A$11.2A$5.3A2.2A$
7.A$6.A3$16.3D$8.A$8.2A$7.A.A32$30.3A$29.A2.A$32.A$28.A3.A$32.A$29.A.
A8.3A$39.A2.A5.A5.3A$42.A4.3A3.A2.A5.A5.3A$34.3A5.A4.A.2A5.A4.3A3.A2.
A5.A$33.A2.A2.A.A6.3A5.A4.A.2A5.A4.3A5.3A$36.A11.3A2.A.A6.3A5.A4.A.2A
3.A2.A5.A$22.3D11.A11.3A11.3A2.A.A6.3A6.A4.3A$22.D2.D7.A.A12.2A12.3A
11.3A6.A4.A.2A$22.D39.2A12.3A3.A.A6.3A$22.D3.D49.2A13.3A$22.D3.D64.3A
$22.D68.2A$23.D.D4$102.3A$87.A14.A2.A$73.A12.3A4.3A6.A$59.A12.3A4.3A
3.2A.A3.A2.A6.A$45.A12.3A4.3A3.2A.A3.A2.A3.3A7.A7.A.A$44.3A4.3A3.2A.A
3.A2.A3.3A7.A4.2A3.A3.A$37.3A3.2A.A3.A2.A3.3A7.A4.2A3.A3.A9.A3.A$36.A
2.A3.3A7.A4.2A3.A3.A9.A3.A13.A$39.A4.2A3.A3.A9.A3.A13.A10.A.A$35.A3.A
9.A3.A13.A10.A.A$35.A3.A13.A10.A.A$39.A10.A.A$30.3A3.A.A$30.A2.A$30.A
$30.A3.A$30.A$31.A.A38$17.A$18.A$16.3A5$16.A$14.A.A$15.2A$25.2D$25.2D
2.2D$29.2D5$24.A.A$25.2A$20.2A3.A$19.A.A$21.A3$31.3D2$22.2A$23.2A$22.
A4$102.3A$87.A13.A2.A$73.A12.3A4.3A8.A$59.A12.3A4.3A4.A.2A3.A2.A7.A$
45.A12.3A4.3A4.A.2A3.A2.A4.3A3.A7.A.A$44.3A4.3A4.A.2A3.A2.A4.3A3.A7.
2A4.A3.A$37.3A4.A.2A3.A2.A4.3A3.A7.2A4.A3.A9.A3.A$37.A2.A4.3A3.A7.2A
4.A3.A9.A3.A9.A$37.A7.2A4.A3.A9.A3.A9.A14.A.A$37.A3.A9.A3.A9.A14.A.A$
37.A3.A9.A14.A.A$37.A14.A.A$38.A.A5$40.3A$39.A2.A5.A5.3A$42.A4.3A3.A
2.A5.A5.3A$42.A4.A.2A5.A4.3A3.A2.A5.A$39.A.A6.3A5.A4.A.2A5.A4.3A5.3A$
48.3A2.A.A6.3A5.A4.A.2A3.A2.A5.A$48.3A11.3A2.A.A6.3A6.A4.3A$48.2A12.
3A11.3A6.A4.A.2A$62.2A12.3A3.A.A6.3A$76.2A13.3A$91.3A$91.2A5$102.3A$
87.A14.A2.A$73.A12.3A4.3A6.A$59.A12.3A4.3A3.2A.A3.A2.A6.A$45.A12.3A4.
3A3.2A.A3.A2.A3.3A7.A7.A.A$44.3A4.3A3.2A.A3.A2.A3.3A7.A4.2A3.A3.A$37.
3D3.2A.A3.A2.A3.3A7.A4.2A3.A3.A9.A3.A$36.D2.D3.3A7.A4.2A3.A3.A9.A3.A
13.A$39.D4.2A3.A3.A9.A3.A13.A10.A.A$35.D3.D9.A3.A13.A10.A.A$35.D3.D
13.A10.A.A$39.D10.A.A$36.D.D6$48.A5.3A$47.3A4.A2.A4.A5.3A$46.2A.A4.A
6.3A4.A2.A4.A$46.3A5.A5.2A.A4.A6.3A5.3A$46.3A6.A.A2.3A5.A5.2A.A5.A2.A
4.A$46.3A11.3A6.A.A2.3A6.A6.3A$47.2A11.3A11.3A6.A5.2A.A$61.2A11.3A7.A
.A2.3A$75.2A12.3A$89.3A$90.2A5$102.3A$87.A13.A2.A$73.A12.3A4.3A8.A$
59.A12.3A4.3A4.A.2A3.A2.A7.A$45.A12.3A4.3A4.A.2A3.A2.A4.3A3.A7.A.A$
44.3A4.3A4.A.2A3.A2.A4.3A3.A7.2A4.A3.A$44.A.2A3.A2.A4.3A3.A7.2A4.A3.A
9.A3.A$45.3A3.A7.2A4.A3.A9.A3.A9.A$45.2A4.A3.A9.A3.A9.A14.A.A$51.A3.A
9.A14.A.A$51.A14.A.A$52.A.A7$48.A5.3A$47.3A3.A2.A5.A5.3A$47.A.2A5.A4.
3A3.A2.A5.A$48.3A5.A4.A.2A5.A4.3A5.3A$48.3A2.A.A6.3A5.A4.A.2A3.A2.A5.
A$48.3A11.3A2.A.A6.3A6.A4.3A$48.2A12.3A11.3A6.A4.A.2A$62.2A12.3A3.A.A
6.3A$76.2A13.3A$91.3A$91.2A39$27.D$28.2D$27.2D5$25.D.D$26.2D$26.D8.2D
$35.2D2.2D$39.2D5$36.D$31.D5.D64.3A$31.2D2.3D49.A13.A2.A$30.D.D40.A
12.3A4.3A8.A$59.A12.3A4.3A4.A.2A3.A2.A7.A$58.3A4.3A4.A.2A3.A2.A4.3A3.
A7.A.A$51.3A4.A.2A3.A2.A4.3A3.A7.2A4.A3.A$41.3D7.A2.A4.3A3.A7.2A4.A3.
A9.A3.A$33.2D16.A7.2A4.A3.A9.A3.A9.A$32.D.D16.A3.A9.A3.A9.A14.A.A$34.
D16.A3.A9.A14.A.A$51.A14.A.A$52.A.A7$48.A5.3A$47.3A3.A2.A5.A5.3A$47.A
.2A5.A4.3A3.A2.A5.A$48.3A5.A4.A.2A5.A4.3A5.3A$48.3A2.A.A6.3A5.A4.A.2A
3.A2.A5.A$48.3A11.3A2.A.A6.3A6.A4.3A$48.2A12.3A11.3A6.A4.A.2A$62.2A
12.3A3.A.A6.3A$76.2A13.3A$91.3A$91.2A5$102.3A$87.A14.A2.A$73.A12.3A4.
3A6.A$59.A12.3A4.3A3.2A.A3.A2.A6.A$58.3A4.3A3.2A.A3.A2.A3.3A7.A7.A.A$
51.3A3.2A.A3.A2.A3.3A7.A4.2A3.A3.A$50.A2.A3.3A7.A4.2A3.A3.A9.A3.A$53.
A4.2A3.A3.A9.A3.A13.A$49.A3.A9.A3.A13.A10.A.A$49.A3.A13.A10.A.A$53.A
10.A.A$50.A.A7$48.D5.3A$47.3D4.A2.A4.A5.3A$46.2D.D4.A6.3A4.A2.A4.A$
46.3D5.A5.2A.A4.A6.3A5.3A$46.3D6.A.A2.3A5.A5.2A.A5.A2.A4.A$46.3D11.3A
6.A.A2.3A6.A6.3A$47.2D11.3A11.3A6.A5.2A.A$61.2A11.3A7.A.A2.3A$75.2A
12.3A$89.3A$90.2A5$102.3A$87.A13.A2.A$73.A12.3A4.3A8.A$59.A12.3A4.3A
4.A.2A3.A2.A7.A$58.3A4.3A4.A.2A3.A2.A4.3A3.A7.A.A$51.3A4.A.2A3.A2.A4.
3A3.A7.2A4.A3.A$51.A2.A4.3A3.A7.2A4.A3.A9.A3.A$51.A7.2A4.A3.A9.A3.A9.
A$51.A3.A9.A3.A9.A14.A.A$51.A3.A9.A14.A.A$51.A14.A.A$52.A.A7$54.3A$
53.A2.A5.A5.3A$56.A4.3A3.A2.A5.A$56.A4.A.2A5.A4.3A5.3A$53.A.A6.3A5.A
4.A.2A3.A2.A5.A$62.3A2.A.A6.3A6.A4.3A$62.3A11.3A6.A4.A.2A$62.2A12.3A
3.A.A6.3A$76.2A13.3A$91.3A$91.2A23$31.A$32.A$30.3A5$30.A$28.A.A$29.2A
$39.2D$39.2D2.2D$43.2D5$38.A.A$39.2A$34.2A3.A$33.A.A$35.A3$45.3D2$36.
2A$37.2A$36.A5$102.3A$87.A13.A2.A$73.A12.3A4.3A8.A$59.A12.3A4.3A4.A.
2A3.A2.A7.A$58.3A4.3A4.A.2A3.A2.A4.3A3.A7.A.A$51.3A4.A.2A3.A2.A4.3A3.
A7.2A4.A3.A$51.A2.A4.3A3.A7.2A4.A3.A9.A3.A$51.A7.2A4.A3.A9.A3.A9.A$
51.A3.A9.A3.A9.A14.A.A$51.A3.A9.A14.A.A$51.A14.A.A$52.A.A7$54.3A$53.A
2.A5.A5.3A$56.A4.3A3.A2.A5.A$56.A4.A.2A5.A4.3A5.3A$53.A.A6.3A5.A4.A.
2A3.A2.A5.A$62.3A2.A.A6.3A6.A4.3A$62.3A11.3A6.A4.A.2A$62.2A12.3A3.A.A
6.3A$76.2A13.3A$91.3A$91.2A5$102.3A$87.A14.A2.A$73.A12.3A4.3A6.A$59.A
12.3A4.3A3.2A.A3.A2.A6.A$58.3A4.3A3.2A.A3.A2.A3.3A7.A7.A.A$51.3D3.2A.
A3.A2.A3.3A7.A4.2A3.A3.A$50.D2.D3.3A7.A4.2A3.A3.A9.A3.A$53.D4.2A3.A3.
A9.A3.A13.A$49.D3.D9.A3.A13.A10.A.A$49.D3.D13.A10.A.A$53.D10.A.A$50.D
.D7$54.3A$54.A2.A4.A5.3A$54.A6.3A4.A2.A4.A$54.A5.2A.A4.A6.3A5.3A$55.A
.A2.3A5.A5.2A.A5.A2.A4.A$60.3A6.A.A2.3A6.A6.3A$60.3A11.3A6.A5.2A.A$
61.2A11.3A7.A.A2.3A$75.2A12.3A$89.3A$90.2A5$102.3A$87.A13.A2.A$73.A
12.3A4.3A8.A$59.A12.3A4.3A4.A.2A3.A2.A7.A$58.3A4.3A4.A.2A3.A2.A4.3A3.
A7.A.A$58.A.2A3.A2.A4.3A3.A7.2A4.A3.A$59.3A3.A7.2A4.A3.A9.A3.A$59.2A
4.A3.A9.A3.A9.A$65.A3.A9.A14.A.A$65.A14.A.A$66.A.A8$54.3A$53.A2.A5.A
5.3A$56.A4.3A3.A2.A5.A$56.A4.A.2A5.A4.3A5.3A$53.A.A6.3A5.A4.A.2A3.A2.
A5.A$62.3A2.A.A6.3A6.A4.3A$62.3A11.3A6.A4.A.2A$62.2A12.3A3.A.A6.3A$
76.2A13.3A$91.3A$91.2A40$41.A$42.2A$41.2A5$39.A.A$40.2A$40.A8.2D$49.
2D2.2D$53.2D5$50.A51.3A$45.A5.A35.A13.A2.A$45.2A2.3A21.A12.3A4.3A8.A$
44.A.A25.3A4.3A4.A.2A3.A2.A7.A$65.3A4.A.2A3.A2.A4.3A3.A7.A.A$65.A2.A
4.3A3.A7.2A4.A3.A$65.A7.2A4.A3.A9.A3.A$55.3D7.A3.A9.A3.A9.A$47.2A16.A
3.A9.A14.A.A$46.A.A16.A14.A.A$48.A17.A.A9$62.A5.3A$61.3A3.A2.A5.A$61.
A.2A5.A4.3A5.3A$62.3A5.A4.A.2A3.A2.A5.A$62.3A2.A.A6.3A6.A4.3A$62.3A
11.3A6.A4.A.2A$62.2A12.3A3.A.A6.3A$76.2A13.3A$91.3A$91.2A5$102.3A$87.
A14.A2.A$73.A12.3A4.3A6.A$72.3A4.3A3.2A.A3.A2.A6.A$65.3A3.2A.A3.A2.A
3.3A7.A7.A.A$64.A2.A3.3A7.A4.2A3.A3.A$67.A4.2A3.A3.A9.A3.A$63.A3.A9.A
3.A13.A$63.A3.A13.A10.A.A$67.A10.A.A$64.A.A9$62.D5.3A$61.3D4.A2.A4.A$
60.2D.D4.A6.3A5.3A$60.3D5.A5.2A.A5.A2.A4.A$60.3D6.A.A2.3A6.A6.3A$60.
3D11.3A6.A5.2A.A$61.2D11.3A7.A.A2.3A$75.2A12.3A$89.3A$90.2A5$102.3A$
87.A13.A2.A$73.A12.3A4.3A8.A$72.3A4.3A4.A.2A3.A2.A7.A$65.3A4.A.2A3.A
2.A4.3A3.A7.A.A$65.A2.A4.3A3.A7.2A4.A3.A$65.A7.2A4.A3.A9.A3.A$65.A3.A
9.A3.A9.A$65.A3.A9.A14.A.A$65.A14.A.A$66.A.A9$68.3A$67.A2.A5.A$70.A4.
3A5.3A$70.A4.A.2A3.A2.A5.A$67.A.A6.3A6.A4.3A$76.3A6.A4.A.2A$76.3A3.A.
A6.3A$76.2A13.3A$91.3A$91.2A22$45.A$46.A$44.3A5$44.A$42.A.A$43.2A$53.
2D$53.2D2.2D$57.2D5$52.A.A$53.2A$48.2A3.A$47.A.A$49.A3$59.3D2$50.2A$
51.2A$50.A6$102.3A$87.A13.A2.A$73.A12.3A4.3A8.A$72.3A4.3A4.A.2A3.A2.A
7.A$65.3A4.A.2A3.A2.A4.3A3.A7.A.A$65.A2.A4.3A3.A7.2A4.A3.A$65.A7.2A4.
A3.A9.A3.A$65.A3.A9.A3.A9.A$65.A3.A9.A14.A.A$65.A14.A.A$66.A.A9$68.3A
$67.A2.A5.A$70.A4.3A5.3A$70.A4.A.2A3.A2.A5.A$67.A.A6.3A6.A4.3A$76.3A
6.A4.A.2A$76.3A3.A.A6.3A$76.2A13.3A$91.3A$91.2A5$102.3A$87.A14.A2.A$
73.A12.3A4.3A6.A$72.3A4.3A3.2A.A3.A2.A6.A$65.3D3.2A.A3.A2.A3.3A7.A7.A
.A$64.D2.D3.3A7.A4.2A3.A3.A$67.D4.2A3.A3.A9.A3.A$63.D3.D9.A3.A13.A$
63.D3.D13.A10.A.A$67.D10.A.A$64.D.D9$68.3A$68.A2.A4.A$68.A6.3A5.3A$
68.A5.2A.A5.A2.A4.A$69.A.A2.3A6.A6.3A$74.3A6.A5.2A.A$74.3A7.A.A2.3A$
75.2A12.3A$89.3A$90.2A5$102.3A$87.A13.A2.A$73.A12.3A4.3A8.A$72.3A4.3A
4.A.2A3.A2.A7.A$72.A.2A3.A2.A4.3A3.A7.A.A$73.3A3.A7.2A4.A3.A$73.2A4.A
3.A9.A3.A$79.A3.A9.A$79.A14.A.A$80.A.A10$68.3A$67.A2.A5.A$70.A4.3A5.
3A$70.A4.A.2A3.A2.A5.A$67.A.A6.3A6.A4.3A$76.3A6.A4.A.2A$76.3A3.A.A6.
3A$76.2A13.3A$91.3A$91.2A41$55.A$56.2A$55.2A5$53.A.A$54.2A$54.A8.2D$
63.2D2.2D$67.2D4$102.3A$64.A22.A13.A2.A$59.A5.A20.3A4.3A8.A$59.2A2.3A
13.3A4.A.2A3.A2.A7.A$58.A.A18.A2.A4.3A3.A7.A.A$79.A7.2A4.A3.A$79.A3.A
9.A3.A$79.A3.A9.A$69.3D7.A14.A.A$61.2A17.A.A$60.A.A$62.A9$76.A$75.3A
5.3A$75.A.2A3.A2.A5.A$76.3A6.A4.3A$76.3A6.A4.A.2A$76.3A3.A.A6.3A$76.
2A13.3A$91.3A$91.2A5$102.3A$87.A14.A2.A$86.3A4.3A6.A$79.3A3.2A.A3.A2.
A6.A$78.A2.A3.3A7.A7.A.A$81.A4.2A3.A3.A$77.A3.A9.A3.A$77.A3.A13.A$81.
A10.A.A$78.A.A11$76.D$75.3D5.3A$74.2D.D5.A2.A4.A$74.3D6.A6.3A$74.3D6.
A5.2A.A$74.3D7.A.A2.3A$75.2D12.3A$89.3A$90.2A5$102.3A$87.A13.A2.A$86.
3A4.3A8.A$79.3A4.A.2A3.A2.A7.A$79.A2.A4.3A3.A7.A.A$79.A7.2A4.A3.A$79.
A3.A9.A3.A$79.A3.A9.A$79.A14.A.A$80.A.A12$83.3A$82.A2.A5.A$85.A4.3A$
85.A4.A.2A$82.A.A6.3A$91.3A$91.3A$91.2A21$59.A$60.A$58.3A5$58.A$56.A.
A$57.2A$67.2D$67.2D2.2D$71.2D5$66.A.A$67.2A$62.2A3.A$61.A.A$63.A3$73.
3D2$64.2A$65.2A$64.A7$102.3A$87.A13.A2.A$86.3A4.3A8.A$79.3A4.A.2A3.A
2.A7.A$79.A2.A4.3A3.A7.A.A$79.A7.2A4.A3.A$79.A3.A9.A3.A$79.A3.A9.A$
79.A14.A.A$80.A.A12$83.3A$82.A2.A5.A$85.A4.3A$85.A4.A.2A$82.A.A6.3A$
91.3A$91.3A$91.2A5$102.3A$87.A14.A2.A$86.3A4.3A6.A$79.3D3.2A.A3.A2.A
6.A$78.D2.D3.3A7.A7.A.A$81.D4.2A3.A3.A$77.D3.D9.A3.A$77.D3.D13.A$81.D
10.A.A$78.D.D12$83.3A$83.A2.A4.A$83.A6.3A$83.A5.2A.A$84.A.A2.3A$89.3A
$89.3A$90.2A5$102.3A$87.A13.A2.A$86.3A4.3A8.A$86.A.2A3.A2.A7.A$87.3A
3.A7.A.A$87.2A4.A3.A$93.A3.A$93.A$94.A.A13$83.3A$82.A2.A5.A$85.A4.3A$
85.A4.A.2A$82.A.A6.3A$91.3A$91.3A$91.2A43$70.A$71.2A$70.2A5$68.A.A$
69.2A$69.A8.2D$78.2D2.2D$82.2D2$102.3A$101.A2.A$93.3A8.A$79.A13.A2.A
7.A$74.A5.A12.A7.A.A$74.2A2.3A12.A3.A$73.A.A17.A3.A$93.A$94.A.A2$84.
3D$76.2A$75.A.A$77.A9$91.A$90.3A$90.A.2A$91.3A$91.3A$91.3A$91.2A5$
102.3A$102.A2.A$93.3A6.A$92.A2.A6.A$95.A7.A.A$91.A3.A$91.A3.A$95.A$
92.A.A14$91.D$90.3D$89.2D.D$89.3D$89.3D$89.3D$90.2D5$102.3A$101.A2.A$
93.3A8.A$93.A2.A7.A$93.A7.A.A$93.A3.A$93.A3.A$93.A$94.A.A40$73.A$74.A
$72.3A5$72.A$70.A.A$71.2A$81.2D$81.2D2.2D$85.2D5$80.A.A$81.2A$76.2A3.
A$75.A.A$77.A3$87.3D2$78.2A$79.2A$78.A8$102.3A$101.A2.A$93.3A8.A$93.A
2.A7.A$93.A7.A.A$93.A3.A$93.A3.A$93.A$94.A.A25$102.3A$102.A2.A$93.3D
6.A$92.D2.D6.A$95.D7.A.A$91.D3.D$91.D3.D$95.D$92.D.D25$102.3A$101.A2.
A$104.A$104.A$101.A.A!
```

Here's the flat RLE version of the test pattern:

Code: Select all

```
x = 106, y = 1437, rule = B3/S23
3bo$bobo$2b2o4$bo$2bo$3o8$10bo$11b2o$5b3o2b2o$7bo$6bo4$8bo$8b2o$7bobo
32$30b3o$29bo2bo$32bo$28bo3bo$32bo$29bobo8b3o$39bo2bo5bo5b3o$42bo4b3o
3bo2bo5bo5b3o$34b3o5bo4bob2o5bo4b3o3bo2bo5bo$33bo2bo2bobo6b3o5bo4bob2o
5bo4b3o5b3o$36bo11b3o2bobo6b3o5bo4bob2o3bo2bo5bo$36bo11b3o11b3o2bobo6b
3o6bo4b3o$33bobo12b2o12b3o11b3o6bo4bob2o$62b2o12b3o3bobo6b3o$76b2o13b
3o$91b3o$91b2o5$102b3o$87bo14bo2bo$73bo12b3o4b3o6bo$59bo12b3o4b3o3b2ob
o3bo2bo6bo$45bo12b3o4b3o3b2obo3bo2bo3b3o7bo7bobo$44b3o4b3o3b2obo3bo2bo
3b3o7bo4b2o3bo3bo$37b3o3b2obo3bo2bo3b3o7bo4b2o3bo3bo9bo3bo$36bo2bo3b3o
7bo4b2o3bo3bo9bo3bo13bo$39bo4b2o3bo3bo9bo3bo13bo10bobo$35bo3bo9bo3bo
13bo10bobo$35bo3bo13bo10bobo$39bo10bobo$30b3o3bobo$30bo2bo$30bo$30bo3b
o$30bo$31bobo38$17bo$18bo$16b3o5$16bo$14bobo$15b2o8$24bobo$25b2o$20b2o
3bo$19bobo$21bo5$22b2o$23b2o$22bo4$102b3o$87bo13bo2bo$73bo12b3o4b3o8bo
$59bo12b3o4b3o4bob2o3bo2bo7bo$45bo12b3o4b3o4bob2o3bo2bo4b3o3bo7bobo$
44b3o4b3o4bob2o3bo2bo4b3o3bo7b2o4bo3bo$37b3o4bob2o3bo2bo4b3o3bo7b2o4bo
3bo9bo3bo$37bo2bo4b3o3bo7b2o4bo3bo9bo3bo9bo$37bo7b2o4bo3bo9bo3bo9bo14b
obo$37bo3bo9bo3bo9bo14bobo$37bo3bo9bo14bobo$37bo14bobo$38bobo5$40b3o$
39bo2bo5bo5b3o$42bo4b3o3bo2bo5bo5b3o$42bo4bob2o5bo4b3o3bo2bo5bo$39bobo
6b3o5bo4bob2o5bo4b3o5b3o$48b3o2bobo6b3o5bo4bob2o3bo2bo5bo$48b3o11b3o2b
obo6b3o6bo4b3o$48b2o12b3o11b3o6bo4bob2o$62b2o12b3o3bobo6b3o$76b2o13b3o
$91b3o$91b2o5$102b3o$87bo14bo2bo$73bo12b3o4b3o6bo$59bo12b3o4b3o3b2obo
3bo2bo6bo$45bo12b3o4b3o3b2obo3bo2bo3b3o7bo7bobo$44b3o4b3o3b2obo3bo2bo
3b3o7bo4b2o3bo3bo$43b2obo3bo2bo3b3o7bo4b2o3bo3bo9bo3bo$43b3o7bo4b2o3bo
3bo9bo3bo13bo$44b2o3bo3bo9bo3bo13bo10bobo$49bo3bo13bo10bobo$53bo10bobo
$50bobo7$48bo5b3o$47b3o4bo2bo4bo5b3o$46b2obo4bo6b3o4bo2bo4bo$46b3o5bo
5b2obo4bo6b3o5b3o$46b3o6bobo2b3o5bo5b2obo5bo2bo4bo$46b3o11b3o6bobo2b3o
6bo6b3o$47b2o11b3o11b3o6bo5b2obo$61b2o11b3o7bobo2b3o$75b2o12b3o$89b3o$
90b2o5$102b3o$87bo13bo2bo$73bo12b3o4b3o8bo$59bo12b3o4b3o4bob2o3bo2bo7b
o$45bo12b3o4b3o4bob2o3bo2bo4b3o3bo7bobo$44b3o4b3o4bob2o3bo2bo4b3o3bo7b
2o4bo3bo$44bob2o3bo2bo4b3o3bo7b2o4bo3bo9bo3bo$45b3o3bo7b2o4bo3bo9bo3bo
9bo$45b2o4bo3bo9bo3bo9bo14bobo$51bo3bo9bo14bobo$51bo14bobo$52bobo7$48b
o5b3o$47b3o3bo2bo5bo5b3o$47bob2o5bo4b3o3bo2bo5bo$48b3o5bo4bob2o5bo4b3o
5b3o$48b3o2bobo6b3o5bo4bob2o3bo2bo5bo$48b3o11b3o2bobo6b3o6bo4b3o$48b2o
12b3o11b3o6bo4bob2o$62b2o12b3o3bobo6b3o$76b2o13b3o$91b3o$91b2o56$102b
3o$87bo13bo2bo$73bo12b3o4b3o8bo$59bo12b3o4b3o4bob2o3bo2bo7bo$58b3o4b3o
4bob2o3bo2bo4b3o3bo7bobo$51b3o4bob2o3bo2bo4b3o3bo7b2o4bo3bo$51bo2bo4b
3o3bo7b2o4bo3bo9bo3bo$51bo7b2o4bo3bo9bo3bo9bo$51bo3bo9bo3bo9bo14bobo$
51bo3bo9bo14bobo$51bo14bobo$52bobo7$48bo5b3o$47b3o3bo2bo5bo5b3o$47bob
2o5bo4b3o3bo2bo5bo$48b3o5bo4bob2o5bo4b3o5b3o$48b3o2bobo6b3o5bo4bob2o3b
o2bo5bo$48b3o11b3o2bobo6b3o6bo4b3o$48b2o12b3o11b3o6bo4bob2o$62b2o12b3o
3bobo6b3o$76b2o13b3o$91b3o$91b2o5$102b3o$87bo14bo2bo$73bo12b3o4b3o6bo$
59bo12b3o4b3o3b2obo3bo2bo6bo$58b3o4b3o3b2obo3bo2bo3b3o7bo7bobo$51b3o3b
2obo3bo2bo3b3o7bo4b2o3bo3bo$50bo2bo3b3o7bo4b2o3bo3bo9bo3bo$53bo4b2o3bo
3bo9bo3bo13bo$49bo3bo9bo3bo13bo10bobo$49bo3bo13bo10bobo$53bo10bobo$50b
obo7$54b3o$54bo2bo4bo5b3o$54bo6b3o4bo2bo4bo$54bo5b2obo4bo6b3o5b3o$55bo
bo2b3o5bo5b2obo5bo2bo4bo$60b3o6bobo2b3o6bo6b3o$60b3o11b3o6bo5b2obo$61b
2o11b3o7bobo2b3o$75b2o12b3o$89b3o$90b2o5$102b3o$87bo13bo2bo$73bo12b3o
4b3o8bo$59bo12b3o4b3o4bob2o3bo2bo7bo$58b3o4b3o4bob2o3bo2bo4b3o3bo7bobo
$51b3o4bob2o3bo2bo4b3o3bo7b2o4bo3bo$51bo2bo4b3o3bo7b2o4bo3bo9bo3bo$51b
o7b2o4bo3bo9bo3bo9bo$51bo3bo9bo3bo9bo14bobo$51bo3bo9bo14bobo$51bo14bob
o$52bobo7$54b3o$53bo2bo5bo5b3o$56bo4b3o3bo2bo5bo$56bo4bob2o5bo4b3o5b3o
$53bobo6b3o5bo4bob2o3bo2bo5bo$62b3o2bobo6b3o6bo4b3o$62b3o11b3o6bo4bob
2o$62b2o12b3o3bobo6b3o$76b2o13b3o$91b3o$91b2o23$31bo$32bo$30b3o5$30bo$
28bobo$29b2o8$38bobo$39b2o$34b2o3bo$33bobo$35bo5$36b2o$37b2o$36bo5$
102b3o$87bo13bo2bo$73bo12b3o4b3o8bo$59bo12b3o4b3o4bob2o3bo2bo7bo$58b3o
4b3o4bob2o3bo2bo4b3o3bo7bobo$51b3o4bob2o3bo2bo4b3o3bo7b2o4bo3bo$51bo2b
o4b3o3bo7b2o4bo3bo9bo3bo$51bo7b2o4bo3bo9bo3bo9bo$51bo3bo9bo3bo9bo14bob
o$51bo3bo9bo14bobo$51bo14bobo$52bobo7$54b3o$53bo2bo5bo5b3o$56bo4b3o3bo
2bo5bo$56bo4bob2o5bo4b3o5b3o$53bobo6b3o5bo4bob2o3bo2bo5bo$62b3o2bobo6b
3o6bo4b3o$62b3o11b3o6bo4bob2o$62b2o12b3o3bobo6b3o$76b2o13b3o$91b3o$91b
2o5$102b3o$87bo14bo2bo$73bo12b3o4b3o6bo$59bo12b3o4b3o3b2obo3bo2bo6bo$
58b3o4b3o3b2obo3bo2bo3b3o7bo7bobo$57b2obo3bo2bo3b3o7bo4b2o3bo3bo$57b3o
7bo4b2o3bo3bo9bo3bo$58b2o3bo3bo9bo3bo13bo$63bo3bo13bo10bobo$67bo10bobo
$64bobo8$54b3o$54bo2bo4bo5b3o$54bo6b3o4bo2bo4bo$54bo5b2obo4bo6b3o5b3o$
55bobo2b3o5bo5b2obo5bo2bo4bo$60b3o6bobo2b3o6bo6b3o$60b3o11b3o6bo5b2obo
$61b2o11b3o7bobo2b3o$75b2o12b3o$89b3o$90b2o5$102b3o$87bo13bo2bo$73bo
12b3o4b3o8bo$59bo12b3o4b3o4bob2o3bo2bo7bo$58b3o4b3o4bob2o3bo2bo4b3o3bo
7bobo$58bob2o3bo2bo4b3o3bo7b2o4bo3bo$59b3o3bo7b2o4bo3bo9bo3bo$59b2o4bo
3bo9bo3bo9bo$65bo3bo9bo14bobo$65bo14bobo$66bobo8$54b3o$53bo2bo5bo5b3o$
56bo4b3o3bo2bo5bo$56bo4bob2o5bo4b3o5b3o$53bobo6b3o5bo4bob2o3bo2bo5bo$
62b3o2bobo6b3o6bo4b3o$62b3o11b3o6bo4bob2o$62b2o12b3o3bobo6b3o$76b2o13b
3o$91b3o$91b2o40$41bo$42b2o$41b2o5$39bobo$40b2o$40bo7$50bo51b3o$45bo5b
o35bo13bo2bo$45b2o2b3o21bo12b3o4b3o8bo$44bobo25b3o4b3o4bob2o3bo2bo7bo$
65b3o4bob2o3bo2bo4b3o3bo7bobo$65bo2bo4b3o3bo7b2o4bo3bo$65bo7b2o4bo3bo
9bo3bo$65bo3bo9bo3bo9bo$47b2o16bo3bo9bo14bobo$46bobo16bo14bobo$48bo17b
obo9$62bo5b3o$61b3o3bo2bo5bo$61bob2o5bo4b3o5b3o$62b3o5bo4bob2o3bo2bo5b
o$62b3o2bobo6b3o6bo4b3o$62b3o11b3o6bo4bob2o$62b2o12b3o3bobo6b3o$76b2o
13b3o$91b3o$91b2o5$102b3o$87bo14bo2bo$73bo12b3o4b3o6bo$72b3o4b3o3b2obo
3bo2bo6bo$65b3o3b2obo3bo2bo3b3o7bo7bobo$64bo2bo3b3o7bo4b2o3bo3bo$67bo
4b2o3bo3bo9bo3bo$63bo3bo9bo3bo13bo$63bo3bo13bo10bobo$67bo10bobo$64bobo
9$68b3o$68bo2bo4bo$68bo6b3o5b3o$68bo5b2obo5bo2bo4bo$69bobo2b3o6bo6b3o$
74b3o6bo5b2obo$74b3o7bobo2b3o$75b2o12b3o$89b3o$90b2o5$102b3o$87bo13bo
2bo$73bo12b3o4b3o8bo$72b3o4b3o4bob2o3bo2bo7bo$65b3o4bob2o3bo2bo4b3o3bo
7bobo$65bo2bo4b3o3bo7b2o4bo3bo$65bo7b2o4bo3bo9bo3bo$65bo3bo9bo3bo9bo$
65bo3bo9bo14bobo$65bo14bobo$66bobo9$68b3o$67bo2bo5bo$70bo4b3o5b3o$70bo
4bob2o3bo2bo5bo$67bobo6b3o6bo4b3o$76b3o6bo4bob2o$76b3o3bobo6b3o$76b2o
13b3o$91b3o$91b2o22$45bo$46bo$44b3o5$44bo$42bobo$43b2o8$52bobo$53b2o$
48b2o3bo$47bobo$49bo5$50b2o$51b2o$50bo6$102b3o$87bo13bo2bo$73bo12b3o4b
3o8bo$72b3o4b3o4bob2o3bo2bo7bo$65b3o4bob2o3bo2bo4b3o3bo7bobo$65bo2bo4b
3o3bo7b2o4bo3bo$65bo7b2o4bo3bo9bo3bo$65bo3bo9bo3bo9bo$65bo3bo9bo14bobo
$65bo14bobo$66bobo9$68b3o$67bo2bo5bo$70bo4b3o5b3o$70bo4bob2o3bo2bo5bo$
67bobo6b3o6bo4b3o$76b3o6bo4bob2o$76b3o3bobo6b3o$76b2o13b3o$91b3o$91b2o
5$102b3o$87bo14bo2bo$73bo12b3o4b3o6bo$72b3o4b3o3b2obo3bo2bo6bo$71b2obo
3bo2bo3b3o7bo7bobo$71b3o7bo4b2o3bo3bo$72b2o3bo3bo9bo3bo$77bo3bo13bo$
81bo10bobo$78bobo10$68b3o$68bo2bo4bo$68bo6b3o5b3o$68bo5b2obo5bo2bo4bo$
69bobo2b3o6bo6b3o$74b3o6bo5b2obo$74b3o7bobo2b3o$75b2o12b3o$89b3o$90b2o
5$102b3o$87bo13bo2bo$73bo12b3o4b3o8bo$72b3o4b3o4bob2o3bo2bo7bo$72bob2o
3bo2bo4b3o3bo7bobo$73b3o3bo7b2o4bo3bo$73b2o4bo3bo9bo3bo$79bo3bo9bo$79b
o14bobo$80bobo10$68b3o$67bo2bo5bo$70bo4b3o5b3o$70bo4bob2o3bo2bo5bo$67b
obo6b3o6bo4b3o$76b3o6bo4bob2o$76b3o3bobo6b3o$76b2o13b3o$91b3o$91b2o41$
55bo$56b2o$55b2o5$53bobo$54b2o$54bo6$102b3o$64bo22bo13bo2bo$59bo5bo20b
3o4b3o8bo$59b2o2b3o13b3o4bob2o3bo2bo7bo$58bobo18bo2bo4b3o3bo7bobo$79bo
7b2o4bo3bo$79bo3bo9bo3bo$79bo3bo9bo$79bo14bobo$61b2o17bobo$60bobo$62bo
9$76bo$75b3o5b3o$75bob2o3bo2bo5bo$76b3o6bo4b3o$76b3o6bo4bob2o$76b3o3bo
bo6b3o$76b2o13b3o$91b3o$91b2o5$102b3o$87bo14bo2bo$86b3o4b3o6bo$79b3o3b
2obo3bo2bo6bo$78bo2bo3b3o7bo7bobo$81bo4b2o3bo3bo$77bo3bo9bo3bo$77bo3bo
13bo$81bo10bobo$78bobo12$83b3o$83bo2bo4bo$83bo6b3o$83bo5b2obo$84bobo2b
3o$89b3o$89b3o$90b2o5$102b3o$87bo13bo2bo$86b3o4b3o8bo$79b3o4bob2o3bo2b
o7bo$79bo2bo4b3o3bo7bobo$79bo7b2o4bo3bo$79bo3bo9bo3bo$79bo3bo9bo$79bo
14bobo$80bobo12$83b3o$82bo2bo5bo$85bo4b3o$85bo4bob2o$82bobo6b3o$91b3o$
91b3o$91b2o21$59bo$60bo$58b3o5$58bo$56bobo$57b2o8$66bobo$67b2o$62b2o3b
o$61bobo$63bo5$64b2o$65b2o$64bo7$102b3o$87bo13bo2bo$86b3o4b3o8bo$79b3o
4bob2o3bo2bo7bo$79bo2bo4b3o3bo7bobo$79bo7b2o4bo3bo$79bo3bo9bo3bo$79bo
3bo9bo$79bo14bobo$80bobo12$83b3o$82bo2bo5bo$85bo4b3o$85bo4bob2o$82bobo
6b3o$91b3o$91b3o$91b2o5$102b3o$87bo14bo2bo$86b3o4b3o6bo$85b2obo3bo2bo
6bo$85b3o7bo7bobo$86b2o3bo3bo$91bo3bo$95bo$92bobo13$83b3o$83bo2bo4bo$
83bo6b3o$83bo5b2obo$84bobo2b3o$89b3o$89b3o$90b2o5$102b3o$87bo13bo2bo$
86b3o4b3o8bo$86bob2o3bo2bo7bo$87b3o3bo7bobo$87b2o4bo3bo$93bo3bo$93bo$
94bobo13$83b3o$82bo2bo5bo$85bo4b3o$85bo4bob2o$82bobo6b3o$91b3o$91b3o$
91b2o43$70bo$71b2o$70b2o5$68bobo$69b2o$69bo4$102b3o$101bo2bo$93b3o8bo$
79bo13bo2bo7bo$74bo5bo12bo7bobo$74b2o2b3o12bo3bo$73bobo17bo3bo$93bo$
94bobo3$76b2o$75bobo$77bo9$91bo$90b3o$90bob2o$91b3o$91b3o$91b3o$91b2o
5$102b3o$102bo2bo$93b3o6bo$92bo2bo6bo$95bo7bobo$91bo3bo$91bo3bo$95bo$
92bobo25$102b3o$101bo2bo$93b3o8bo$93bo2bo7bo$93bo7bobo$93bo3bo$93bo3bo
$93bo$94bobo40$73bo$74bo$72b3o5$72bo$70bobo$71b2o8$80bobo$81b2o$76b2o
3bo$75bobo$77bo5$78b2o$79b2o$78bo8$102b3o$101bo2bo$93b3o8bo$93bo2bo7bo
$93bo7bobo$93bo3bo$93bo3bo$93bo$94bobo25$102b3o$102bo2bo$102bo$102bo$
103bobo29$102b3o$101bo2bo$104bo$104bo$101bobo!
```

Anyone see problem points that I'm missing? The blinker is close to the HWSS stream, so this recipe wouldn't work for odd-period streams, but that's not a problem here. It can drop an HWSS very closely in front of an approaching *WSS, but it's a slow insertion reaction so it can't construct immediately behind a passing *WSS.

A sixth glider can be added to clean up the leftover block, unless the block turns out to be useful. It would be interesting to build a slow-salvo version of the Caterpillar, where all the gliders come from the northwest, and the block is re-used as a target to build the next *WSS.

**EDIT:** Here's the slow-salvo recipe

extracted from oblique's results, as it would come from a 31c/240 rake:

Code: Select all

```
x = 10497, y = 10500, rule = B3/S23
2bo$obo$b2o1194$1215bo$1213bobo$1214b2o1926$3123bo$3121bobo$3122b2o
1005$4141bobo$4142b2o$4142bo626$4754bo$4755b2o$4754b2o2588$7367bo$
7368b2o$7367b2o1497$8860bo$8861b2o$8860b2o1377$10229bo$10230bo$10228b
3o263$10494bo$10495b2o$10494b2o3$10494b2o$10495b2o$10494bo!
```

So this particular recipe doesn't work as a slow salvo: unless the fourth through eighth SEward gliders are sent in very quick succession, the intermediate targets will all just barely get in the way of passing HWSSes. But the current search is optimized for 31c/240, anyway -- there will be other HWSS edge-shooter slow salvos for 17c/45 rakes. It wouldn't even be all that expensive to design a new slow salvo that builds the above HWSS seed one piece at a time, but without intruding on the upship lane.

**EDIT 2:** Pure slow-salvo recipes for the above HWSS seed

are posted on the sscs search thread. They were assembled manually from known atomic operations, so there are undoubtedly much shorter solutions out there. It looks to me as if the 16-glider seed recipe would work fine in a Caterpillar, which has a period of 270 instead of 240 and also moves much faster than the 31c/240 reaction, so its recipes just have to fit in a modulo-102 vertical stripe instead of modulo-31.

These slow salvos don't address the problem of building the one problem HWSS in the original helix, though. That one is still unbuildable by known slow salvos. -- Well, there again a recipe

could be manually strung together to make a slow-salvo seed for the four synchronized gliders used by the original Caterpillar, but that would be ridiculously expensive. The search continues for alternative HWSS seeds.