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niklasf / syzygy-tables.info

User interface and public API for probing Syzygy endgame tablebases
https://syzygy-tables.info
GNU Affero General Public License v3.0
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Position on the front-page of syzygy-tables.info is not 656 half-moves #276

Closed pavelkomin closed 2 years ago

pavelkomin commented 2 years ago

I was going through the entire line, but my walk-through went through a line that is still a cursed win after pushing the pawn, thus it should probably say 556 half-moves as 100 was added to the number artificially.

Here's my line

[FEN "6B1/3B4/5R2/6q1/P7/1k6/8/3K4 b - - 0 1"]

1... Kc3 2. Rc6+ Kb2 3. Rc2+ Ka1 4. Rc8 Qh5+ 5. Kd2 Qh6+ 6. Ke2 Qh2+ 7. Ke3 Qe5+
8. Kf3 Qh5+ 9. Ke4 Qe2+ 10. Kd5 Qd1+ 11. Ke6 Qg4+ 12. Kd6 Qf4+ 13. Kc5 Qe3+ 14.
Kc6 Qd4 15. Kc7 Qa7+ 16. Kd6 Qd4+ 17. Bd5 Qf4+ 18. Kc5 Qe3+ 19. Kc6 Qd4 20. Ra8
Kb2 21. B7e6 Ka3 22. Bb3 Qc3+ 23. Kd7 Qg7+ 24. Bf7 Qg4+ 25. Kc6 Qf3+ 26. Bfd5
Qc3+ 27. Kd7 Qh3+ 28. Be6 Qd3+ 29. Kc8 Qd6 30. Bed5 Qe7 31. Ra6 Qe8+ 32. Kc7
Qe7+ 33. Kc6 Qe8+ 34. Kc5 Qe7+ 35. Rd6 Qc7+ 36. Rc6 Qa5+ 37. Kc4 Qb4+ 38. Kd3
Qa5 39. Be6 Qa8 40. Rc8 Qa5 41. Ke4 Qh5 42. Kf4 Kb2 43. Bed5 Ka3 44. Bdc4 Qh2+
45. Kg5 Qe5+ 46. Kg6 Kb4 47. Bd5 Ka3 48. Be6 Kb4 49. Rc4+ Ka5 50. Rg4 Qe2 51.
Rg5+ Kb4 52. Kg7 Qa6 53. Rg4+ Ka3 54. Rd4 Qe2 55. Kg6 Qg2+ 56. Rg4 Qa8 57. Rf4
Qb8 58. Rf5 Kb4 59. Bd1 Qe8+ 60. Bf7 Qb8 61. Kh7 Qb7 62. Kg7 Qd7 63. Rd5 Qc6 64.
Rd4+ Ka5 65. Rd3 Kb4 66. Bfh5 Qb7+ 67. Kh6 Qc6+ 68. Kg5 Qc1+ 69. Kf5 Qc8+ 70.
Ke5 Qc7+ 71. Ke4 Qc6+ 72. Rd5 Qe6+ 73. Re5 Qc6+ 74. Kf5 Qd7+ 75. Kf4 Qd6 76.
Bhf3 Kc3 77. Kf5 Qd7+ 78. Kg5 Qg7+ 79. Kf4 Qc7 80. Ke4 Qh7+ 81. Rf5 Qe7+ 82. Kf4
Qh4+ 83. Bg4 Qf2+ 84. Kg5 Qe3+ 85. Kf6 Qb6+ 86. Kg7 Qd4+ 87. Rf6 Qe5 88. Bgf3
Qe7+ 89. Rf7 Qe5+ 90. Kh7 Qh2+ 91. Kg6 Qd6+ 92. Rf6 Qg3+ 93. Kf7 Qc7+ 94. Ke6
Qc8+ 95. Kd5 Qc4+ 96. Kd6 Qd4+ 97. Ke6 Qd8 98. Rf4 Qb6+ 99. Kf5 Qc5+ 100. Kg6
Qd6+ 101. Kg5 Qc5+ 102. Rf5 Qg1+ 103. Kh6 Qh2+ 104. Rh5 Qd2+ 105. Kg6 Qd3+ 106.
Kg5 Qe3+ 107. Kf5 Qc5+ 108. Ke6 Qc8+ 109. Kd5 Qd8+ 110. Ke5 Qb6 111. Bfe2 Kd2
112. Rh3 Qc5+ 113. Ke4 Ke1 114. Rh5 Qe3+ 115. Kd5 Kd2 116. Bf3 Qd3+ 117. Ke6
Qg6+ 118. Ke5 Qg1 119. Kd5 Qg8+ 120. Kd4 Qg7+ 121. Ke4 Qe7+ 122. Re5 Qh7+ 123.
Kd4 Qd3+ 124. Kc5 Kc3 125. Re4 Qd8 126. Rc4+ Kb2 127. Rb4+ Kc1 128. Rd4 Qa5+
129. Kd6 Kb2 130. Rd5 Qb6+ 131. Ke5 Ka3 132. Rd3+ Ka2 133. Kf5 Qa7 134. Bfe2 Kb1
135. Rd5 Qf7+ 136. Ke5 Qc7+ 137. Ke4 Qh7+ 138. Ke3 Qh6+ 139. Kd3 Qh7+ 140. Kc3
Qg7+ 141. Kb3 Qb2+ 142. Kc4 Qc1+ 143. Kd3 Qa3+ 144. Ke4 Qb4+ 145. Rd4 Qb7+ 146.
Ke3 Qe7+ 147. Kf3 Qb7+ 148. Kg3 Qb6 149. Rg4 Qg1+ 150. Kf3 Qh1+ 151. Kf2 Qh2+
152. Ke1 Ka2 153. Bf3 Qe5+ 154. Kf1 Qc3 155. Rg3 Kb2 156. Bde2 Qc1+ 157. Kg2 Qd2
158. Kh2 Kb3 159. Bc6+ Kb4 160. Rg4+ Ka3 161. Bb5 Qd6+ 162. Kg2 Qd2 163. Kf3
Qd5+ 164. Kg3 Qd2 165. Bec4 Qc3+ 166. Kf4 Qf6+ 167. Ke4 Kb4 168. Ba2 Kc5 169.
Bb3 Kb4 170. B3c4 Qh8 171. Bf7 Qh7+ 172. Ke5+ Ka5 173. Kf6 Qh8+ 174. Kg6 Qe5
175. Bbe8 Qe3 176. Kg7 Qc5 177. Rg2 Qc3+ 178. Kg8 Qc8 179. Rg6 Qd8 180. Kf8 Qh4
181. Bb5 Qh8+ 182. Ke7 Qe5+ 183. Re6 Qc5+ 184. Kf6 Qc3+ 185. Kg6 Qc2+ 186. Kh6
Qc8 187. Rc6 Qg4 188. Kh7 Qg3 189. Ra6+ Kb4 190. Rg6 Qb8 191. Bfe8 Qd8 192. Kg8
Qd5+ 193. Kg7 Qc5 194. Kf7 Qd5+ 195. Ke7 Qe4+ 196. Re6 Qh4+ 197. Kd7 Qg4 198.
Bg6 Qd4+ 199. Ke8 Qh8+ 200. Kf7 Qd8 201. Rc6 Qd7+ 202. Kf6 Qd4+ 203. Ke7 Qa7+
204. Kf8 Qa8+ 205. Be8 Qd8 206. Kf7 Ka5 207. Ra6+ Kb4 208. Ke6 Kc5 209. Rc6+ Kb4
210. Rc1 Qd2 211. Rc8 Ka5 212. Rc6 Qd8 213. Rd6 Qc8+ 214. Ke7 Qc7+ 215. Bed7 Qc5
216. Bdc6 Kb6 217. Ke6 Qe3+ 218. Be4+ Ka5 219. Bc6 Qh3+ 220. Ke7 Qg3 221. Kd7
Qg4+ 222. Re6 Kb6 223. Bb5+ Ka5 224. Bed3 Qg7+ 225. Kc8 Qg8+ 226. Re8 Qf7 227.
Bc6 Qg7 228. Bc4 Kb6 229. Bd7 Ka7 230. Re6 Qf8+ 231. Be8 Qc5+ 232. Rc6 Qf5+ 233.
Be6 Qf3 234. B6f7 Qe4 235. Re6 Qa8+ 236. Kd7 Qh1 237. Bg6 Qh4 238. Be4 Qg3 239.
B4g6 Kb8 240. Ke7 Qh4+ 241. Rf6 Qb4+ 242. Kf7 Qb7+ 243. Kg8 Qe7 244. Ra6 Qd8
245. Kf8 Kc7 246. Bf7 Kb7 247. Bc4 Kb8 248. Be2 Kc7 249. Bb5 Kb7 250. Rc6 Kb8
251. Re6 Kc8 252. Bc4 Kb7 253. Kf7 Qg5 254. Bc6+ Ka7 255. B6b5 Qf4+ 256. Ke8
Qb8+ 257. Kd7 Qb7+ 258. Kd6 Kb6 259. Bd7 Qg2 260. Ke7+ Kc7 261. Rc6+ Kb7 262.
Ba6+ Ka7 263. Bb5 Qg7+ 264. Ke6 Kb8 265. Bc8 Qg5 266. Kf7 Qh5+ 267. Kf6 Qh8+
268. Kf5 Qh7+ 269. Kf4 Qh2+ 270. Kg5 Qd2+ 271. Kg6 Qg2+ 272. Kf6 Qb2+ 273. Kf7
Qf2+ 274. Ke8 Qg3 275. Be6 Kb7 276. Kd7 Qg7+ 277. Kd6 Qd4+ 278. Bd5 Qf4+ 279.
Kd7 Qf5+ 280. Be6 Qe5 281. Ba6+ Ka7 282. Bac4 Qa1 283. Ra6+ Kb8 284. a5
niklasf commented 2 years ago

Good catch, thanks for reporting! Fixed.