Author: Marc Bourzutschky
Date: 16:29:49 01/07/03
The KRRPKQ ending features some extremely subtle play. In the position below White can win, but it takes 165 moves of manoevering before he can move his pawn from the starting square. And even after he can finally move his pawn play is still very difficult. This breaks the record of 130 moves set by KBBPKR which I posted a few weeks ago. The ending was generated with Johan de Koning's program FEG, which can be downloaded from www.chessmaster.com. It took just over a week on P4/1.9GHz. [D] q7/k7/8/1R6/8/8/2R2P1K/8 b [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "1-0"] [Annotator "FEG"] [SetUp "1"] [FEN "q7/k7/8/1R6/8/8/2R2P1K/8 b - - 0 1"] [PlyCount "506"] [EventDate "2003.01.08"] 1... Qh8+ 2. Kg2 $1 Qg7+ 3. Kf1 $1 Qa1+ 4. Ke2 $1 Qa4 5. Rcb2 $1 Qe4+ 6. Kd1 $1 Qd3+ 7. Ke1 $1 Qc3+ 8. Ke2 $1 Qc4+ 9. Ke3 Qc3+ 10. Kf4 Qf6+ 11. Kg4 Qd4+ 12. Kg3 (12. f4 $2 Qd1+ $1 $11) 12... Qg7+ 13. Kf3 Qf7+ 14. Ke3 Qe6+ 15. Kd2 Qh6+ 16. Ke2 Qe6+ 17. Kd1 Qg4+ 18. Ke1 Qe4+ 19. Re2 Qc4 20. Re7+ $1 Ka6 21. Rbe5 $1 Qb4+ 22. Ke2 Qg4+ 23. Ke3 Qh3+ 24. Kd2 (24. f3 $2 Qg3 $11) 24... Qh4 25. R7e6+ Ka7 26. Ra5+ Kb7 27. Rb5+ $1 Ka7 28. Ke1 Qc4 29. Ra5+ Kb7 30. Rae5 Qb4+ 31. Ke2 Qg4+ 32. Ke3 (32. f3 $2 Qg2+ $11) 32... Qh3+ 33. Kd2 (33. f3 $2 Qg3 $11) 33... Qh4 34. Re2 Qd4+ 35. Kc2 Qc4+ 36. Kb1 Qd3+ 37. Rc2 Qd1+ 38. Kb2 $1 Qd4+ 39. Kc1 Qa1+ 40. Kd2 Qa5+ 41. Ke3 Qg5+ 42. Kd4 $1 (42. f4 $2 Qg3+ $11) 42... Qd8+ 43. Ke4 Qd7 44. Rec6 $1 Qg4+ 45. Ke5 (45. f4 $2 Qh4 $1 $11) 45... Qg5+ 46. Kd4 Qg7+ 47. Kc5 Qa1 48. Rb6+ (48. f4 $2 Qa5+ $11) 48... Ka7 49. Rb4 Ka6 50. Rbc4 Qe5+ 51. Kb4 Qa5+ 52. Kb3 Qd5 53. Kc3 (53. f4 $2 Qf3+ $11) 53... Qe5+ 54. Kd2 Qd5+ 55. Kc1 Qh1+ 56. Kb2 Qb7+ 57. Ka3 Qe7+ 58. Ka4 Qd7+ 59. Rc6+ Ka7 60. Ka3 Kb7 61. Kb4 Qd5 62. Rc7+ Kb8 63. R7c5 Qe4+ 64. Ka3 Qa8+ 65. Kb2 Qb7+ 66. Kc1 Qh1+ 67. Kd2 Qh6+ 68. Ke2 Qe6+ 69. Kd1 Qg4+ 70. Kc1 $1 Kb7 71. R5c3 Qg1+ 72. Kb2 Qd1 73. Re3 Kb6 74. Kc3 (74. f3 $2 Qd4+ $11) 74... Kc5 75. Rd3 Qe1+ 76. Kb2+ Kb5 77. Rcd2 (77. f4 $2 Qe4 $1) (77. f3 $2 Qe5+ $11) 77... Qe4 78. Kc1 Qg4 79. Rd4 Qf3 80. Rd5+ Kc4 81. Rg5 $1 Qh1+ 82. Kc2 Qe4+ 83. Kd1 Qf3+ 84. Ke1 Qh1+ 85. Ke2 Qe4+ 86. Kf1 Qh1+ 87. Rg1 Qh3+ 88. Ke1 Qe6+ 89. Kd1 Qh3 90. Rg3 Qf1+ 91. Kc2 Kb4 92. Rg4+ (92. f3 $2 Qc4+ $11) 92... Kc5 93. Rf4 (93. f4 $2 Qf3 $11) 93... Qa1 94. Rd3 (94. f3 $2 Qe5 $11) 94... Qa2+ 95. Kd1 Qa1+ 96. Kd2 Qb2+ 97. Ke3 Qe5+ 98. Re4 Qg5+ 99. Ke2 (99. f4 $2 Qg3+ $11) 99... Qh5+ 100. Rf3 Kc6 101. Rc4+ Kd7 102. Rcf4 Ke6 103. Rf6+ Kd7 104. R6f5 Qh4 105. R3f4 Qh6 106. Rd5+ Ke6 107. Rff5 Qh7 108. Rde5+ Kd6 109. Rg5 Qb1 110. Re3 (110. f3 $2 Qc2+ $11) (110. f4 $2 Qb3 $11) 110... Qh7 111. Rgg3 Qh5+ 112. Ref3 Ke7 113. Rh3 Qb5+ 114. Rd3 Qb1 115. Rb3 (115. f4 $2 Qc2+ $11) (115. f3 $2 Qc2+ $11) 115... Qc1 116. Rbe3+ Kd6 117. Rh4 (117. f3 $2 Qc2+ $11) 117... Kd5 118. Ree4 (118. f3 $2 Qc2+ $11) 118... Kd6 119. Rc4 Qb1 120. Rhe4 Kd5 121. Rcd4+ Kc5 122. Rh4 (122. f4 $2 Qc2+ $11) (122. f3 $2 Qc2+ $11) 122... Qb5+ 123. Rc4+ Kd6 124. Kf1 (124. f3 $2 Qe5+ $11) 124... Qb1+ 125. Kg2 Qb7+ 126. Rce4 (126. f3 $2 Qg7+ $11) 126... Qd5 127. Kg3 (127. f3 $2 Qg8+ $11) 127... Qa5 128. Rd4+ (128. f4 $2 Qc3+ $1 $11) (128. f3 $2 Qg5+ $11) 128... Kc6 129. Rhg4 (129. f3 $2 Qg5+ $11) 129... Qf5 130. Rdf4 (130. f4 $2 Qc2 $11) (130. f3 $2 Qe5+ $11) 130... Qh5 131. Rg7 (131. f3 $2 Kd5 $11) 131... Kd5 132. Kg2 (132. f3 $2 Ke5 $11) 132... Ke6 133. Rd4 (133. f3 $2 Qh6 $11) 133... Qc5 134. Rg6+ Ke7 135. Rd3 Qf5 136. Rgg3 Qe4+ 137. Rdf3 Qd5 138. Kg1 Qa5 139. Re3+ Kd6 140. Rd3+ (140. f4 $2 Qf5 $11) (140. f3 $2 Qf5 $11) 140... Kc6 141. Rg6+ (141. f3 $4 Qe1+ $19) (141. f4 $2 Qe1+ $11) 141... Kc7 142. Rd1 Qf5 143. Rg7+ Kc6 144. Rc1+ Kd6 145. Ra1 Qd3 146. Rg5 Qd4 147. Ra3 Qf4 148. Rag3 Qe4 149. Rg6+ (149. f3 $2 Qe1+ $11) 149... Kd7 150. Rg7+ Kd6 151. R7g5 (151. f3 $2 Qe1+ $11) 151... Kd7 152. Re3 (152. f3 $2 Qe1+ $11) 152... Qf4 153. Ree5 Qf3 154. Rg3 Qf6 155. Rd3+ Kc6 156. Rdd5 Qf3 157. Rg5 Qh3 158. Ra5 Kd7 159. Rg7+ Ke6 160. Rg6+ Kf7 161. Rg3 Qh8 162. Kg2 (162. f3 $2 Qd4+ $11) 162... Kf6 163. Rgg5 (163. f4 $2 Qh4 $11) (163. f3 $2 Qh4 $11) 163... Qh4 164. Rgf5+ Ke6 165. Rae5+ (165. f3 $2 Qd4 $11) 165... Kd7 166. f3 (166. f4 $2 Qg4+ $11) 166... Kd6 167. Re4 Qh6 168. Rfe5 Qf6 169. Kg3 (169. f4 $2 Qg6+ $11) 169... Qg6+ 170. Kh4 Qf6+ 171. Kg4 Qg7+ 172. Rg5 Qd7+ 173. Kg3 Qa7 174. Rf5 Qg7+ 175. Rg4 Qa1 176. Rgf4 Qg7+ 177. Kh4 Qh6+ 178. Kg4 Qe6 179. Kh5 Qe8+ 180. Kh4 Qd8+ 181. Rg5 Qh8+ 182. Kg4 Qh6 183. Rff5 Ke6 184. f4 Ke7 185. Re5+ Kf7 186. Rgf5+ Kg8 187. Re8+ Kg7 188. Re7+ Kg8 189. Rd5 Kf8 190. Red7 Qg6+ 191. Kf3 Qc2 192. Rd8+ Kf7 193. R5d7+ $1 Kg6 194. Rd2 Qf5 195. Kg3 $1 Kf7 196. R2d7+ Ke6 197. Rd5 Qg6+ 198. Kf3 Qc2 199. Rd3 Kf5 200. Kg3 Qb1 201. R3d5+ $1 Kf6 202. R5d6+ $1 Kg7 203. R8d7+ Kh8 204. Rd5 Qg1+ 205. Kh4 Qf2+ 206. Kg5 Qg3+ 207. Kf5 Qh3+ 208. Kf6 Qh4+ 209. Ke5 Qe1+ 210. Kf5 Qc3 211. Kg6 Qg7+ 212. Kh5 Qc3 213. Rd8+ Kg7 214. R5d7+ Kf6 215. Rf8+ Ke6 216. Rdf7 Qf3+ 217. Kg6 Qg4+ 218. Kh7 Qh3+ 219. Kg8 Qg2+ 220. Rg7 Qa2 221. Rg5 Ke7+ 222. Kg7 Qa1+ 223. Re5+ Kd7 224. Rf7+ Kd6 225. Rf6+ Kd7 226. Rb5 Qg1+ 227. Kf8 Qh2 228. Rb7+ Kd8 229. Kg8 Qg3+ 230. Rg7 Qb3+ 231. Rgf7 Qg3+ 232. Kf8 Qa3+ 233. Kg7 Qg3+ 234. Rg6 Qc3+ 235. Kg8 Ke8 236. f5 Qc4 237. Re6+ Kd8 238. Kf8 Qc5+ 239. Ree7 Qd6 240. f6 Qc6 241. Ra7 Qh1 242. Kg8 Qg2+ 243. Rg7 Qd5+ 244. f7 Qe6 245. Ra6 Qc4 246. Rf6 Kd7 247. Rgg6 Qd5 248. Kg7 Qc4 249. f8=Q Qc3 250. Qd6+ Ke8 251. Qc6+ Qxc6 252. Rxc6 Kd7 253. Kf8 Kd8 254. Rgd6# 1-0
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