There's a variant of the eater weld in NW41T357 available on Catagolue. Call me mad but I actually think this is the best option for a 153 tick design at the moment:dvgrn wrote: How much construction difficulty might we want to deal with, to keep the circuitry down to a reasonable size? We're building two eater2s already, so maybe another one wouldn't be so bad.
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x = 123, y = 118, rule = LifeHistory
97.4B6.4B$96.4B6.4B$95.4B6.4B$94.4B6.4B$93.4B6.4B$92.4B6.4B$91.4B6.4B
$90.4B6.4B$89.4B6.4B$88.4B6.4B$66.A20.4B6.4B$67.A18.4B6.4B$65.3A17.4B
6.4B$84.4B6.4B$83.4B6.4B$82.4B6.4B$81.4B6.4B$80.4B6.4B$79.4B6.4B$78.
4B6.4B$77.4B6.4B$76.4B6.4B$65.2D8.4B6.4B8.2A$65.2D7.4B6.3B2D8.CA$56.
2D15.4B6.4B2D6.3D$57.D14.4B6.4B8.D$57.D.D11.4B6.4B9.2D$58.2D10.4B6.4B
11.2A$69.4B6.4B12.2A$68.4B6.4B19.2C$67.4B6.4B19.AD.A$66.4B6.4B19.D.CA
$65.4B6.4B20.2D13.2A$64.4B6.4B36.2A$63.4B6.4B$62.4B6.4B4.2A$61.4B6.4B
5.2A38.2A$60.4B6.4B46.2A$59.4B6.4B43.2A$58.4B6.4B14.2A28.2A$57.4B6.4B
15.2A9.A$56.4B6.4B26.A.A$55.4B6.4B8.2D17.2A$54.4B6.2D2B8.AC43.2A$53.
4B6.B2DB9.2A3D6.2D32.2A$52.4B6.4B14.D2.2D2.2D$51.4B6.4B15.D.D.D$50.4B
6.4B15.2D.D.2A$49.4B6.4B16.D2.D.2A$48.4B6.4B18.2D$47.4B6.4B$46.4B6.4B
47.3D$45.4B6.4B49.D$44.4B6.4B50.3D$43.4B6.4B$42.4B6.4B$41.4B6.4B$40.
4B6.4B$39.4B6.4B$38.4B6.4B$37.4B6.4B$36.4B7.3B$35.4B9.B$34.4B$33.4B$
32.4B$31.4B$30.4B$29.4B$28.4B$27.4B$26.4B$25.4B$24.4B$23.4B$22.4B$17.
B3.4B$16.3B.4B$9.2A5.7B9.B$8.B2AB3.7B9.2A8.A$2A6.4B2.7B9.B2AB5.3A$.A
5.B.2B.12B6.3B5.A$.A.AB.19B6.B.B4.2A$2.2AB.19B4.6B.4B$4.23B2.10B$5.
33B7.2A$5.32B8.A$3.33B6.BA.A$3.33B2.3B.B2A13.2A$2.41B14.B2AB$2.41B15.
2B$.41B17.2B3.B$.42B15.4B.B2A$2.43B11.8B2A$.24B3.20B2.2B2.6B2AB.B$.
23B5.31B2A$.12B2.8B7.7B.24B$10B6.7B7.6B2.28B$.4B2.B.2B10.2A6.6B3.28B$
7.B2AB10.A7.4B6.26B2A$8.2A12.3A4.2B2AB12.4B.14B2A$24.A2.2AB.2A14.4B2.
11B.B$24.A.A.AB18.4B2.10B$23.2A.A22.14B$23.A2.A23.14B$24.2A24.13B$50.
13B$50.B3C4B.2B$50.2BC5B$50.2B3C4B$50.10B$49.7B.4B$48.4B.B4.4B$47.4B
8.4B$46.4B10.4B$45.4B12.4B$44.4B14.4B$43.4B16.4B!
I had a look but couldn't find anything good. I came up with this but it is pretty much useless: even though the Herschel gets sent on quite a long path, the glider is still over 100 ticks too slow. Also the patterns would overlap when translated by 65fd.dvgrn wrote:If we do go back to semi-Snarks, is there a geometry that allows only one semi-Snark instead of two? Or we have Spartan G0 emitters that could get past one semi-Snark with no loss of data... but then we're back to a much higher repeat time again. Drat, bother, and humbug.
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x = 159, y = 273, rule = LifeHistory
88.4B6.4B$87.4B6.4B$86.4B6.4B$85.4B6.4B$84.4B6.4B$83.4B6.4B$82.4B6.4B
$81.4B6.4B$80.4B6.4B$79.4B6.4B$78.4B6.4B$77.4B6.4B$76.4B6.4B$75.4B6.
4B$74.4B6.4B$73.4B6.4B$72.4B6.4B$71.4B6.4B$70.4B6.4B$69.4B6.4B$68.4B
6.4B$67.4B6.4B$66.4B6.4B$65.4B6.4B$64.4B6.4B$63.4B6.4B$62.4B6.4B$61.
4B6.4B$60.4B6.4B$59.4B6.4B$58.4B6.4B$57.4B6.4B$56.4B6.4B$55.4B6.4B$
54.4B6.4B$53.4B6.4B$52.4B7.4B$51.4B7.5B$50.4B5.9B$49.4B6.9B$48.4B7.9B
$47.4B8.10B$46.4B8.12B$45.4B8.13B8.2A$44.4B10.11B9.A17.2A$43.4B12.12B
4.BA.A17.A$42.4B13.15B.B2A19.A11.A$41.4B14.17B20.2A9.3A$40.4B15.17B
20.B9.A$39.4B13.B.17B19.3B9.2A10.2A$38.4B13.2A19B16.6B5.5B10.A$37.4B
14.2AB.19B11.10B3.4B9.BA.A$36.4B16.B4.20B2.2B3.11B2.6B4.3B.B2A13.2A$
35.4B22.32B2A13B.7B14.B2AB$34.4B23.9B.22B2A21B15.2B$33.4B25.7B2.44B
17.2B3.B$32.4B26.7B2.45B15.4B.B2A$31.4B27.6B4.46B11.8B2A$30.4B28.7B
10.4B.13B3.B.19B2.2B2.6B2AB.B$29.4B29.6B12.3B5.B.7B7.29B2A$28.4B29.7B
13.4B19.6B.24B$27.4B31.6B15.2A17.5B.B2.28B$26.4B33.5B15.A18.2A7.28B$
8.2A8.A6.4B34.6B15.3A16.A8.26B2A$7.B2AB5.3A5.4B37.4B17.A13.3A16.4B.
14B2A$8.3B4.A7.4B37.B2A2B31.A19.4B2.11B.B$2A5.B.B5.2A5.4B39.2A54.4B2.
10B$.A5.10B4.4B97.14B$.A.AB2.8B5.4B99.14B$2.2AB.11B2.4B100.13B$4.3B2A
13B101.13B$4.3B2A12B102.8B.2B$5.15B61.2A21.A18.8B$5.14B61.B2AB20.3A
16.8B$5.14B51.2A8.4B23.A15.10B$4.A.14B51.A9.2B23.2A14.7B2.2A$3.A.A5.
5B.4B50.A.AB5.5B21.4B11.8B2.A$3.2A7.4B2.4B50.2AB4.7B.2B5.7B.B5.3B9.8B
4.3A$12.2B5.4B51.3B2.5B2.3B5.13B.4B7.9B6.A$11.4B5.4B50.48B.6B$11.B2AB
6.4B50.46B.7B$12.2A8.4B50.44B2.6B$23.4B42.2A5.7B2D11B2A22B.7B$24.4B
42.A5.7B2D11B2A31B$25.4B41.A.AB2.27B3.2B2.19B$26.4B41.2AB.9B.B3.B2.
10B10.18B$27.4B42.11B9.6B13.18B3.B$28.4B41.11B10.3B13.2AB3.15B.B2A$
29.4B40.9B.B2A8.B14.A.AB2.18B2A$30.4B40.7B2.BA.A6.2A14.A5.12B2A3B.B$
31.4B38.8B5.A6.A14.2A6.11B2A2B$32.4B38.8B4.2A6.3A19.10B2.2B$33.4B38.
7B14.A21.B.6B3.2B$34.4B34.11B39.4B2.B2AB$35.4B32.11B39.B2A2B3.2A$36.
4B31.11B40.2A$37.4B30.11B$38.4B29.8B2.B2A$39.4B28.7B3.BA.A$40.4B27.7B
6.A$41.4B26.6B7.2A$42.4B24.7B$43.4B22.8B$44.4B20.8B$45.4B19.8B$46.4B
16.2A2B.6B$47.4B14.ABAB.7B$48.4B12.BA2B2.6B$49.4B11.2AB3.6B$50.4B11.B
4.6B$51.4B14.8B$52.4B14.8B$53.4B12.9B$54.4B11.9B$55.4B10.10B$56.4B9.
5B2A3B$57.4B8.5B2A4B$58.4B7.11B$59.4B6.12BA.2A$60.4B7.8B2.2A.A$61.4B
6.7B$62.4B5.6B$63.4B4.6B$64.4B3.7B$65.12B$66.11B6.A$67.10B4.3A$66.B.
10B2.A11.A$65.A2B.8B3.2A8.3A$64.A.A15B7.A$65.AB.12B5.B3.2A14.2A$68.
13B2.8B13.B2AB$69.20B16.2B$69.20B17.2B3.B$67.2AB.19B15.4B.B2A$66.A.AB
.21B11.8B2A$66.A4.24B2.2B2.6B2AB.B$65.2A2.4B4.30B2A$69.2A7.6B.24B$70.
A5.5B.B2.28B$67.3A6.2A7.28B$67.A9.A8.26B2A$74.3A16.4B.14B2A$74.A19.4B
2.11B.B$95.4B2.10B$96.14B$97.14B$97.13B$97.13B$97.8B.2B$97.8B$97.9B$
97.10B$96.7B.4B$95.8B2.4B$94.8B4.4B$93.9B5.4B$92.4B.6B5.4B$92.3B.7B6.
4B$90.2A2B2.6B8.4B$89.A.AB3.6B9.4B$89.A6.6B10.4B$88.2A5.8B10.4B$96.8B
10.4B$95.9B11.4B$95.9B12.4B$95.10B12.4B$95.5B2A3B13.4B$95.5B2A4B3.2A
8.4B$95.11B3.A10.4B$95.12BA.A11.4B$97.8B2.2A13.4B$90.2A5.7B19.4B$88.
2B2AB2.7B22.4B$80.2A6.4B2.9B22.4B$81.A5.6B.11B.2B18.4B$81.A.AB.22B19.
4B$82.2AB.23B19.4B$84.25B20.4B$84.28B18.4B$84.28B19.4B$85.29B18.4B$
86.28B19.4B$87.28B19.4B$89.26B20.4B$88.27B21.4B$86.2AB.23B24.4B$85.A.
AB.20B28.4B$85.A4.16B33.4B$84.2A3.18B33.4B$88.20B33.4B$89.20B33.4B$
92.18B33.4B$93.16B35.4B$95.13B37.4B$95.3B.2B2A5B38.4B$93.4B2.2B2A3B
41.4B$93.2A3.8B42.4B$94.A4.8B42.4B$91.3A5.8B43.3B$91.A8.7B44.2B$100.
7B45.B$92.A7.6B$91.A.A6.6B$91.A.A6.5B$89.3A.2A4.6B$88.A4.B6.6B$89.3AB
2AB3.7B$91.A.2AB.8B$95.10B$95.6B2A3B$95.6B2A2B5.2A$95.10B5.A$94.11B2.
BA.A$94.12B.B2A$93.15B$92.16B$89.2B.16B$88.2A18B$88.2AB.17B$89.B.4B.
8B2.4B$96.7B4.4B$97.6B5.4B$99.4B6.4B$101.3BA5.4B$102.BA.A5.4B$103.A.A
6.4B$104.A8.4B$105.3A6.4B$107.A7.4B$116.2B2A$117.BABA$118.A3B$119.4B$
120.4B$121.4B$122.4B$123.4B$124.4B$125.4B$126.4B$127.4B$128.4B$129.4B
$130.4B$131.4B$132.4B$133.4B$134.4B$135.4B$136.4B$137.4B$138.4B$139.
4B$140.4B$141.4B$142.4B$143.4B$144.4B$145.4B$146.4B$147.4B$148.4B$
149.4B$150.4B$151.4B$152.4B$153.4B$154.3BA$155.B2AB$156.ABA$157.2B$
158.B!