Position from the longest game...

[MikeB]

Ok The subject was a hook - and I got you 😜 - but I have over a 250,000 game database simply created since March 2017 from SF-McB testing and I decided to go poking into the database to see what I could find - and remember I never adjudicate a game - so here's a game that is the longest decisive game in the database ( and Chessbase will choke on this - it's too long, but xboard is good with it )

[d]8/2r5/1p1p1p1k/pP1PbPrP/P1PpP3/3K1Bp1/R5R1/8 b - - 59 278

apparently SF-McB and other engines fail to see that Rxh5 leads to a win,
nice move by Komodo 11.2.2 to swindle a win ...K11.2.2 sees this quite fast on my machine

and for those that want see the entire game ( the tc here is 4 min plus 4 sec , the tc is presented in centiseconds)

[pgn][Event "Computer chess game"]
[Site "Mac-Pro"]
[Date "Wed Oct 18 01:01:27 2017"]
[Round "61"]
[White "SF-McBrain v3.0 TCEC-X 6"]
[Black "Komodo 11.2.2 64-bit"]
[Result "0-1"]
[TimeControl "24000+400"]
[FEN "r1bqkbnr/pppp1p1p/2n3p1/4p3/2P5/2NP4/PP2PPPP/R1BQKBNR w KQkq - c0 2;
"]

1. g3 Bg7 2. Bg2 Nf6 3. e4 O-O 4. Nge2 d6 5. O-O Nd7 6. f4 Nd4
7. f5 c6 8. b3 Nf6 9. Na4 Qe7 10. g4 Nd7 11. Be3 h6 12. Nac3
g5 13. b4 Qd8 14. a4 a5 15. b5 Re8 16. Ng3 Nf6 17. h3 Re7 18.
Ra2 Re8 19. Ra1 c5 20. Nd5 b6 21. Bd2 Bb7 22. Ne3 Qc7 23. Bc3
Rad8 24. Rf2 Qe7 25. Rb1 Kh7 26. Qd2 Qd7 27. Nd5 Bxd5 28. exd5
Qe7 29. Re1 Qb7 30. Ref1 Qc7 31. Re1 Rg8 32. Be4 Rge8 33. Qb2
Re7 34. Bg2 Red7 35. Be4 Kg8 36. Qd2 Nb3 37. Qd1 Nd4 38. Qc1
Rc8 39. Qb2 Bf8 40. Bg2 Be7 41. Qb1 Qd8 42. Kh2 Rb8 43. Rff1
Bf8 44. Kg1 Bg7 45. Qd1 Kh8 46. Be4 Ra7 47. Bg2 Bf8 48. Rf2 Kh7
49. Rd2 Kh8 50. Rb2 Be7 51. Rf2 Rc7 52. Bd2 Rbc8 53. Kh2 Kg8
54. Kg1 Bf8 55. Bc3 Bg7 56. Be4 Rb8 57. Qc1 Nb3 58. Qb1 Nd4 59.
Qc1 Nb3 60. Qb1 Nd4 61. Qd1 Bf8 62. Qc1 Be7 63. Qe3 Rcc8 64.
Bf3 Bf8 65. Bd1 Bg7 66. Bc2 Qc7 67. Bd1 Qd7 68. Rh2 e4 69. dxe4
Qe7 70. Nh5 Nxh5 71. gxh5 Be5 72. Ra2 Qf6 73. Ba1 Re8 74. Bg4
Re7 75. Qd3 Rbe8 76. Kg2 Qg7 77. Qb1 Qf6 78. Rf2 Kh7 79. Bb2
Bf4 80. Qd3 Kg8 81. Ba1 Be5 82. Bc3 Bf4 83. Ree2 Qe5 84. Kh1
Qf6 85. Kg2 Be5 86. Re1 Bf4 87. Rff1 Kh8 88. Bb2 Kg8 89. Bc3
Qe5 90. Rg1 Qf6 91. Kh1 Kh8 92. Kg2 Kh7 93. Rgf1 Kg8 94. Re2
Qh8 95. Ba1 Be5 96. Ree1 Qg7 97. Kh1 Qf6 98. Rg1 Kh8 99. Rb1
Kh7 100. Kg2 Bf4 101. Rbe1 Be5 102. Kh1 Kh8 103. Kg2 Kg8 104.
Rgf1 Qg7 105. Kg1 Qf6 106. Kh1 Kf8 107. Rb1 Bf4 108. Rbe1 Be5
109. Kg2 Rd8 110. Kg1 Red7 111. Rb1 Kg8 112. Kg2 Re7 113. Rg1
Kf8 114. Kh1 Ree8 115. Bd1 Qe7 116. Rg4 Bf4 117. Bxd4 cxd4 118.
Bc2 Qe5 119. Qf3 Ke7 120. Bd3 Rh8 121. Kg2 Kd7 122. Kf1 Kc7 123.
Ke1 Kb8 124. Qf2 Be3 125. Qe2 Rd7 126. Kd1 Qe8 127. Kc2 Qc8 128.
Kb3 Rdd8 129. Ka2 Qc5 130. Rb2 Bf4 131. Rg1 Be5 132. Rgb1 Kb7
133. Qf3 Rhe8 134. Rg2 Qc7 135. Rg4 Qc8 136. Rg2 Qc5 137. Rg4
Qc8 138. Qg2 Kb8 139. Qe2 Kb7 140. Qg2 Rh8 141. Qb2 Qc5 142.
Qa3 Qc7 143. Qb2 Rc8 144. Rbg1 Bf6 145. R4g2 Rhe8 146. Qa3 Be5
147. Rf1 Qe7 148. Qb3 Bf4 149. Qb2 Be3 150. Rb1 Qc7 151. Qc2
f6 152. Rb2 Qf7 153. Qe2 Qc7 154. Qc2 Re5 155. Qd1 Rce8 156.
Qf3 Qc5 157. Rgc2 Qc8 158. Rb1 R8e7 159. Re1 Qe8 160. Qd1 Rc7
161. Qg4 Qc8 162. Rb1 Ree7 163. Rh1 Re8 164. Qd1 Rd7 165. Rg2
Rg8 166. Qe1 Rc7 167. Qe2 Re7 168. Rb1 Rge8 169. Qc2 Rh8 170.
Qe2 Re5 171. Rh1 Rh7 172. Qf1 Qc7 173. h4 Ree7 174. Qd1 Re8 175.
Qc2 Rg8 176. Rg4 Qc5 177. Rh2 Rhh8 178. Rhg2 Bf4 179. Qb2 Re8
180. Rc2 Rh7 181. Rcg2 Be5 182. Rg1 Rhh8 183. Qa3 Qc7 184. Be2
Qc8 185. Qd3 Re7 186. Re1 Qe8 187. Rh1 Rg8 188. Qf3 Bf4 189.
Bd3 Qc8 190. Qe2 Qc5 191. Rb1 Rgg7 192. Qe1 Be3 193. Rb2 Rh7
194. Rh2 Bf4 195. Rh1 Be3 196. Qd1 Bf2 197. hxg5 hxg5 198. Rg2
Be3 199. Rb2 Bf4 200. Rh3 Re8 201. Qg4 Rg8 202. Rh1 Be5 203.
Rg2 Rgh8 204. Qd1 Rg8 205. Qd2 g4 206. Rhg1 g3 207. Rh1 Rg5 208.
Be2 Kb8 209. Qc2 Rg8 210. Rb1 Qc7 211. Qd3 Rg5 212. Rh1 Qc8 213.
Qa3 Rg8 214. Qf3 Qf8 215. Qd3 Qh6 216. Rb1 Rc7 217. Rd1 Qg5 218.
Bf3 Rgc8 219. Rc2 Rc5 220. Kb1 Rg8 221. Rg2 Kb7 222. Rc2 Qg7
223. Qd2 Rcc8 224. Qd3 Qc7 225. Qa3 Rh8 226. Ka2 Qg7 227. Qd3
Qc7 228. Qb3 Rh7 229. Qd3 Qg7 230. Rg1 Qc7 231. Rd1 Qg7 232.
Rg2 Qg5 233. Qb3 Rhh8 234. Qd3 Rc7 235. Rc2 Rc5 236. Qd2 Qg8
237. Rh1 Qg7 238. Rcc1 Rc7 239. Kb3 Rcc8 240. Rhg1 Qc7 241. Rg2
Qc5 242. Ka2 Rb8 243. Bg4 Rh7 244. Be2 Qc7 245. Rcg1 Rg8 246.
Rc1 Qg7 247. Rb1 Qg5 248. Qxg5 Rxg5 249. Kb3 Kc8 250. Kc2 Kd8
251. Kd3 Ke8 252. Kd2 Kf7 253. Kd3 Kg7 254. Rh1 Kh6 255. Rb1
Rg8 256. Rd1 Rb7 257. Bf3 Rc7 258. Rf1 Rc5 259. Rc2 Rg7 260.
Rh1 Rg5 261. Rh4 Rc8 262. Rh1 Rc7 263. Re2 Rg8 264. Rc2 Rgg7
265. Rf1 Rc8 266. Rg2 Rd7 267. Rc1 Rc5 268. Bd1 Rd8 269. Rcc2
Rc7 270. Bf3 Rg8 271. Rc1 Rc5 272. Rf1 Rd8 273. Bd1 Rcc8 274.
Rfg1 Rg8 275. Rc2 Rg5 276. Ra2 Rc5 277. Rgg2 Rc7 278. Bf3 Rxh5
279. Bxh5 Kxh5 280. Rg1 Kh4 281. Rag2 Kh3 282. Rd2 Rg7 283. Rh1+
Kg4 284. Rg1 Rh7 285. Rb2 Rh3 286. Re2 Kh4 287. Kc2 Rh2 288.
Kd3 Rxe2 289. Kxe2 Kg4 290. Rd1 Kf4 291. Kf1 Kf3 292. Rd3+ Kxe4
293. Rd1 d3 294. Kg2 Ke3 295. Re1+ Kd4 296. Rc1 d2 297. Rd1 Ke3
298. Kf1 Bf4 299. Kg2 Ke2 300. Ra1 d1=Q 301. Rxd1 Kxd1 302. Kf3
Kd2 303. c5 dxc5 304. d6 Bxd6 305. Ke4 g2 306. Kd5 c4 307. Kxd6
c3 308. Kc7 g1=Q 309. Kb7 c2 310. Ka6 c1=Q 311. Kb7 Qg7+ 312.
Ka6 Qc8+ 313. Kxb6 Qgc7# 0-1 {White Checkmated}
[/pgn]

[MikeB]

dev-SF-McBrain does eventually get it - but way too long for a 4 minute game:
[d]8/2r5/1p1p1p1k/pP1PbPrP/P1PpP3/3K1Bp1/R5R1/8 b - - 59 1

Code: Select all

	white viewpoint		fewer / Multi-PV setting = 1 / more
exclude: none best +tail                                          
dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 44	 -1.81!	5.91G	4:30.23	Rxh5! 
 44	 -1.31!	4.74G	3:36.46	Rxh5! 
 44	 -0.92!	4.55G	3:27.36	Rxh5! 
 44	 -0.63!	4.25G	3:13.30	Rxh5! 
 44	 -0.42!	3.99G	3:01.58	Rxh5! 
 44	 -0.26!	3.99G	3:01.36	Rxh5! 
 44	 -0.15!	3.99G	3:01.33	Rxh5! 
 44	 -0.07!	3.99G	3:01.27	Rxh5! 
 43	  0.00 	334.5M	0:15.32	Rc8 Rg1 Rcg8 Rag2 Rxh5 Bxh5 Kxh5 Rh1+ Kg4 Rgg1 Rg7 Rh6 Kf3 Rf1+ Kg2 Rhh1 Rh7 Rfg1+ Kf2 Rf1+ Kg2 
 43	+0.02!	179.8M	0:08.31	Rg8! 
 42	+0.10 	142.9M	0:06.61	Rg8 Bd1 Rgg7 Rac2 Rc8 Rg1 Rgc7 Rh1 Rg7 Bf3 Rgg8 Rg1 Rg7 Rd1 Rgg8 Re1 Rg7 Rb1 Rgg8 Rd1 Rg7 Re1 Rg5 Rg2 Rg7 Rf1 Rcc7 Bd1 Rc8 Rh1 Rg5 Rh4 Rc7 Rg4 Rxg4 Bxg4 Kg5 Bd1 Kf4 Rg1 Rg7 Rf1+ Kg5 
 41	+0.10!	69.1M  	0:03.20	Rg8! 
 40	+0.25 	26.5M  	0:01.24	Rg8 Rac2 Kg5 Rg1 Kh6 Rf1 Rgg7 Rd1 Rc8 Re1 Rcg8 Rg2 Rc8 Bd1 Rgg8 Rf1 Rc7 Bf3 Rgc8 Rc1 Rg8 Be2 Rcg7 Rf1 Rc7 Rh1 Rcc8 Rb1 Rg5 Rbg1 Rc7 Rd1 Rg8 Rb1 Rg5 Rh1 Rg8 Bf3 Rxc4 Kxc4 Rc8+ Kb3 
 39	+0.25 	14.1M  	0:00.65	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rf1 Rc7 Bf3 Rcc8 Be2 Rc7 Rh1 Rcg7 Rh4 Rg5 Bd1 R5g7 Bf3 Rg5 Rh1 R5g7 Rd1 Kg5 Rc1 Rc7 Rcg1 Kh6 Rc2 Rcg7 Rgg2 Rc7 Be2 Rcc8 
 38	+0.25 	11.0M  	0:00.52	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rh4 Rg5 Rh3 R5g7 Rh1 Rc7 Be2 Rcg7 Rh4 Rg5 Bd1 R5g7 Bf3 Rg5 Rh1 R5g7 Rd1 Kg5 Rdg1 Kh6 Ra2 Rc7 Rc2 Rcg7 Rcg2 Rc8 Rc1 Bf4 
 37	+0.25 	10.4M  	0:00.48	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rf1 Rc7 Bf3 Rcc8 Rc2 Rc7 Rg1 Rcc8 Re1 Rc7 Rb1 Rcc8 Rd1 Rc7 Re1 Rcg7 Rg2 Rc8 Be2 Rgc7 Rc1 Rg8 Rc2 Rcc8 Bd1 Rc7 Rg1 
 36	+0.25 	9.69M  	0:00.45	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rh4 Rg5 Rh3 R5g7 Rh1 Rc8 Rf1 Rgc7 Rc2 Rg8 Rg1 Rcg7 Rcg2 Rc8 Ra2 Rgg8 Rgg2 Rg7 Rac2 Rgc7 Bf3 Rg8 Rc1 Bf4 Rcg1 Be5 
 35	+0.25 	7.82M  	0:00.36	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rhg1 Rc8 Rc2 Rcg8 Rgg2 Rc7 Be2 Rgc8 Bf3 Rg8 Rg1 Rcc8 Rh1 Rc7 Rd1 Rgc8 Rdc1 Rg8 Rb1 Rcg7 Rg2 Rc7 Rf1 Rcc8 Bd1 Rc7 Rfg1 Re7 
 34	+0.25 	4.73M  	0:00.22	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rh3 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh3 Kg4 Rh1 Kg5 Rhg1 Rh7 Bd1 Rhc7 Rc2 Rg8 Re1 Rcg7 Bf3 Kh6 Rg2 Rc8 Rf1 Rgc7 Rc2 Rg7 Rd1 Rgc7 
 33	+0.25 	3.76M  	0:00.18	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rh3 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh3 Kg4 Rh1 Kg5 Rhg1 Rh7 Bd1 Rhc7 Rc2 Rg8 Re1 Rcg7 Rh1 Kh6 Rg2 Rc7 Rh3 Rg5 Be2 Rg8 Bf3 Rxc4 Kxc4 Rc8+ Kd3 
 32	+0.25 	3.28M  	0:00.15	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Bd1 Rcg8 Rh3 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh3 Kg4 Rh1 Kg5 Rhg1 Rh7 Bd1 Rhc7 Rc2 Rg8 Re1 Rcg7 Rg2 Rc7 Bf3 Rxc4 Kxc4 Rc8+ Kd3 Rc3+ Ke2 Re3+ Kd2 Rxf3 
 31	+0.25 	2.92M  	0:00.14	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Rf1 Re8 Rfg1 Reg8 Bd1 Rc8 Rh1 Rcg8 Rh3 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh3 Kg4 Rh1 Kg5 Rhg1 Rh7 Bd1 Rhc7 Rc2 Rg8 Re1 Kh6 Bf3 
 30	+0.25 	2.80M  	0:00.13	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Rf1 Re8 Rd1 Reg8 Rdg1 Rc7 Bd1 Re7 Rh1 Rc7 Rh3 Rcc8 Bb3 Rc7 Rh1 Rgc8 Rh4 Kg5 Rh3 Kg4 Rh1 Kg5 
 29	+0.25 	2.35M  	0:00.11	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Rf1 Re8 Rd1 Reg8 Rdg1 Rc7 Bd1 Re7 Rh1 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh1 Kh6 Rh3 Rg8 Bd1 Rcc8 
 28	+0.25 	2.23M  	0:00.10	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Rf1 Re8 Rd1 Reg8 Rdg1 Rc7 Bd1 Re7 Rh1 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh1 Kh6 Rh3 Rg8 Bd1 Rcc8 
 27	+0.25 	2.08M  	0:00.10	Rg8 Rac2 Kg5 Rg1 Kh6 Rh1 Rcg7 Rg2 Rc8 Rf1 Re8 Rd1 Reg8 Rdg1 Rc7 Bd1 Re7 Rh1 Rc7 Rh4 Rgc8 Bb3 Kg5 Rh1 Kh6 Rh3 Rg8 Bd1 

current dev-Sf was a little faster on this run time wise:

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 58	 -0.63!	6.13G	4:26.86	Rxh5! 
 58	 -0.42!	4.92G	3:34.84	Rxh5! 
 58	 -0.26!	4.28G	3:07.30	Rxh5! 
 58	 -0.15!	3.93G	2:52.08	Rxh5! 
 58	 -0.07!	3.59G	2:37.53	Rxh5! 
 57	  0.00 	692.2M	0:28.82	Rgg7 Be2 Rc8 Bd1 Rc5 Rg1 Rc8 Rag2 Rgc7 Rc2 Kg5 Rh1 Kh6 Bf3 Rg7 Rd1 Rcg8 Rg2 Rc8 Be2 Rgc7 Rc1 Bf4 Rc2 Be5 Bf3 Rg7 Be2 Rgc7 
 56	  0.00 	597.0M	0:24.65	Rgg7 Be2 Rc8 Bd1 Rc5 Rg1 Rc8 Rag2 Rgc7 Rc2 Kg5 Rh1 Kh6 Bf3 Rg7 Rd1 Rcg8 Rg2 Rc8 Be2 Rgc7 Rc1 Bf4 Rc2 Be5 Bf3 Rg7 Be2 Rgc7 
 55	  0.00 	579.1M	0:23.88	Rgg7 Be2 Rc8 Bd1 Rc5 Rg1 Rc8 Rag2 Rgc7 Rc2 Kg5 Rh1 Kh6 Bf3 Rg7 Rd1 Rcg8 Rg2 Rc8 Be2 Rgc7 Rc1 Bf4 Rc2 Be5 Bf3 Rg7 Be2 Rgc7 
 54	  0.00 	532.8M	0:21.87	Rgg7 Be2 Rc8 Bd1 Rc5 Rg1 Rc8 Rag2 Rgc7 Rc2 Kg5 Rh1 Kh6 Bf3 Rg7 Rd1 Rcg8 Rg2 Rc8 Be2 Rgc7 Rc1 Bf4 Rc2 Be5 Bf3 Rg7 Be2 Rgc7 
 53	  0.00 	530.5M	0:21.76	Rgg7 Be2 Rc8 Bd1 Rc5 Rg1 Rc8 Rag2 Rgc7 Rc2 Kg5 Rh1 Kh6 Bf3 Rg7 Rd1 Rcg8 Rg2 Rc8 Be2 Rgc7 Rc1 Bf4 Rc2 Be5 Bf3 Rg7 Be2 Rgc7