Problem of Smarthink when mating with 2 queens

[Robert Allgeuer]

Geschrieben von: / Posted by: Robert Allgeuer at 23 January 2004 21:50:59:


Interesting game below, probably a bug in Smarthink 017a.
In this game Smarthink does not know how to mate with the two queens, even though the PV most of the time shows a mate in 2 or 3 moves and the score is a mate score. Still it takes it ages to finally find a mate, and I assume this was more by luck ...
Athlon 1.1Mhz, 96 MB hash, all 5piece EGTBs, 5min + 2 sec
Robert

[Event "SmarThink 0.17a Gauntlet"]
[Site "DISCO"]
[Date "2004.01.23"]
[Round "15.1"]
[Number "95"]
[White "SmarThink v0.17a"]
[Black "Crafty-MPC v18.15DC"]
[Result "1-0"]
[TimeControl "300+2"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8.
Bc3 Ne4 9. Bb2 d5 10. O-O Nd7 11. Nfd2 f5 12. Nxe4 fxe4 13. Bh3 Nf8 14. Qc2
Qd7 15. f3 Bf6 16. cxd5 exf3 17. dxc6 Bxd4+ 18. Kh1 Qd5 19. Rxf3 Bd3 20.
exd3 Qxf3+ 21. Bg2 Qf2 22. Qxf2 Bxf2 23. Na3 O-O-O 24. Nb5 a6 25. Na7+ Kb8
26. Rf1 Kxa7 27. Rxf2 a5 28. a4 Ka6 29. Rf7 e5 30. Bf1 Nd7 31. d4+ Ka7 32.
dxe5 Rhf8 33. Rxd7+ Rxd7 34. cxd7 Rxf1+ 35. Kg2 Rd1 36. e6 g5 37. Bf6 Kb7
38. d8=Q Rxd8 39. Bxd8 Kc6 40. Kf3 Kd6 41. e7 Kd7 42. Kg4 h6 43. h4 b5 44.
hxg5 bxa4 45. bxa4 h5+ 46. Kxh5 Ke8 47. g6 Kd7 48. g7 Kd6 49. e8=Q Kd5 50.
g8=Q+ Kd4 51. Bxa5 Kd3 52. Qb3+ Kd4 53. Qc3+ Kd5 54. Qd3+ Kc5 55. Qf8+ Kc6
56. Qff3+ Kc5 57. Qfe3+ Kc6 58. Qb5+ Kd6 59. Bc7+ Kxc7 60. Qe7+ Kc8 61. Qa5
Kb8 62. Qf8+ Kb7 63. Qfb4+ Kc6 64. Qbb6+ Kd7 65. Qg5 Ke8 66. Qe6+ Kf8 67.
Qc8+ Kf7 68. Qd7+ Kf8 69. Qdd8+ Kf7 70. Qdf6+ Ke8 71. Qd6 Kf7 72. Qc7+ Ke6
73. Qd2 Kf5 74. Qdc2+ Ke6 75. Q2c3 Kf5 76. Qc8+ Ke4 77. Qd8 Kf5 78. Qg8 Ke4
79. Qa8+ Kf5 80. Qaf3+ Ke6 81. Qfc6+ Kf7 82. Qg6+ Ke7 83. Qa3+ Kd7 84.
Qad6+ Kc8 85. Qg8+ Kb7 86. Qf7+ Ka8 87. Qdd5+ Kb8 88. Qg2 Kc8 89. Qe8+ Kc7
90. Qec6+ Kd8 91. Kh6 Ke7 92. Kg6 Kf8 93. Qh3 Ke7 94. Qg4 Kf8 95. Qa8+ Ke7
96. Kh6 Kd6 97. Qg5 Kd7 98. Qg7+ Kd6 99. Qf6+ Kc5 100. Qaf8+ Kc4 101. Qf3
Kd4 102. Q8f6+ Kc5 103. Q3c3+ Kd5 104. Qfd4+ Ke6 105. Qe1+ Kf5 106. Qef2+
Ke6 107. Qe2+ Kf5 108. Qc5+ Kf6 109. a5 Kf7 110. Qce7+ Kg8 111. Kg6 Kh8
112. Kf6 Kg8 113. Kg5 Kh8 114. Qf3 Kg8 115. Qb3+ Kh8 116. Qb1 Kg8 117. Qf1
Kh8 118. Kg6 Kg8 119. Kh6 Kh8 120. Qfe1 Kg8 121. Kg6 Kh8 122. Kf6 Kg8 123.
Q1e2 Kh8 124. Qd3 Kg8 125. Kg6 Kh8 126. Kh6 Kg8 127. Kh5 Kh8 128. Qb5 Kg8
129. Kh6 Kh8 130. Kg6 Kg8 131. Kf6 Kh8 132. Kf5 Kg8 133. Kg6 Kh8 134. Kh6
Kg8 135. Kh5 Kh8 136. Qbc5 Kg8 137. Kg5 Kh8 138. Kh6 Kg8 139. Qc1 Kh8 140.
Qh1 Kg8 141. Qhe1 Kh8 142. Qc1 Kg8 143. Kh5 Kh8 144. Qc2 Kg8 145. Qd2 Kh8
146. Kg5 Kg8 147. Kh6 Kh8 148. Qg2 Kg8 149. Qf2 Kh8 150. Kh5 Kg8 151. Kg5
Kh8 152. Kg6 Kg8 153. Kf6 Kh8 154. Qg2 Kg8 155. Qf3 Kh8 156. Qfa3 Kg8 157.
Qb3+ Kh8 158. Qe8+ Kh7 159. a6 Kh6 160. Kf5 Kg7 161. Qba4 Kh7 162. Kg5 Kg7
163. Qd8 Kf7 164. Qad4 Ke6 165. Qc3 Kf7 166. Qb3+ Kg7 167. Qa3 Kf7 168.
Qf3+ Ke6 169. Qb3+ Ke5 170. Qbd3 Ke6 171. Qe2+ Kf7 172. Qf2+ Ke6 173. Qfd2
Ke5 174. Qc3+ Ke4 175. Kh5 Kf5 176. Qf8+ Ke6 177. Qcc5 Kd7 178. Qc2 Ke6
179. Qd3 Ke5 180. Kg5 Ke6 181. Qg8+ Ke5 182. Qh8+ Ke6 183. Qf8 Ke5 184. Kh5
Ke6 185. Kg6 Ke5 186. Kh6 Ke6 187. Kg7 Ke5 188. Qb8+ Ke6 189. Qbd8 Ke5 190.
Q3d4+ Kf5 191. Qb4 Ke5 192. Qdf8 Kd5 193. Qg8+ Kc6 194. Qc8+ Kd5 195. Qbc4+
Ke5 196. g4 Kd6 197. Qf5 Ke7 198. Qf8+ Kd7 199. Qff7+ Kd6 200. Qf6+ Kd7
201. Qfe6+ Kd8 202. Qg8+ Kd7 203. Qc3 Kd6 204. Qd4+ Kc7 205. Kh7 Kc6 206.
Qe8+ Kc7 207. Qed8+ Kc6 208. Qc8+ Kb5 209. Qcc4+ Ka5 210. Qa2+ Kb5 211. Kg7
Kc6 212. Qc2+ Kb5 213. Qda4+ Kb6 214. Qcc6+ Ka7 215. Qc8 Kb6 216. Qb8+ Kc5
217. Kf7 Kd5 218. Kf6 Kc5 219. Qf8+ Kb6 220. Qg7 Kc5 221. Qf7 Kd6 222. Qe7+
Kd5 223. Qee8 Kc5 224. Qc8+ Kb6 225. Qcd7 Kc5 226. Kf7 Kb6 227. Kg6 Kc5
228. Kf6 Kb6 229. Qb7+ Kc5 230. Kf7 Kd6 231. Qf4+ Kc5 232. Qfe4 Kd6 233.
Qd3+ Ke5 234. Qe3+ Kd6 235. Qg1 Ke5 236. Qh2+ Kd4 237. Qc6 Kd3 238. Qb2 Ke3
239. Qcf6 Kd3 240. Qd6+ Ke3 241. Qc5+ Kf3 242. Qce5 Kxg4 243. Qg2+ Kh4 244.
Qgg3#
{White mates} 1-0

[Norm Pollock]

Geschrieben von: / Posted by: Norm Pollock at 23 January 2004 21:59:54:
Als Antwort auf: / In reply to: Problem of Smarthink when mating with 2 queens geschrieben von: / posted by: Robert Allgeuer at 23 January 2004 21:50:59:

Interesting game below, probably a bug in Smarthink 017a.
In this game Smarthink does not know how to mate with the two queens, even though the PV most of the time shows a mate in 2 or 3 moves and the score is a mate score. Still it takes it ages to finally find a mate, and I assume this was more by luck ...
Athlon 1.1Mhz, 96 MB hash, all 5piece EGTBs, 5min + 2 sec
Robert

[Event "SmarThink 0.17a Gauntlet"]
[Site "DISCO"]
[Date "2004.01.23"]
[Round "15.1"]
[Number "95"]
[White "SmarThink v0.17a"]
[Black "Crafty-MPC v18.15DC"]
[Result "1-0"]
[TimeControl "300+2"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8.
Bc3 Ne4 9. Bb2 d5 10. O-O Nd7 11. Nfd2 f5 12. Nxe4 fxe4 13. Bh3 Nf8 14. Qc2
Qd7 15. f3 Bf6 16. cxd5 exf3 17. dxc6 Bxd4+ 18. Kh1 Qd5 19. Rxf3 Bd3 20.
exd3 Qxf3+ 21. Bg2 Qf2 22. Qxf2 Bxf2 23. Na3 O-O-O 24. Nb5 a6 25. Na7+ Kb8
26. Rf1 Kxa7 27. Rxf2 a5 28. a4 Ka6 29. Rf7 e5 30. Bf1 Nd7 31. d4+ Ka7 32.
dxe5 Rhf8 33. Rxd7+ Rxd7 34. cxd7 Rxf1+ 35. Kg2 Rd1 36. e6 g5 37. Bf6 Kb7
38. d8=Q Rxd8 39. Bxd8 Kc6 40. Kf3 Kd6 41. e7 Kd7 42. Kg4 h6 43. h4 b5 44.
hxg5 bxa4 45. bxa4 h5+ 46. Kxh5 Ke8 47. g6 Kd7 48. g7 Kd6 49. e8=Q Kd5 50.
g8=Q+ Kd4 51. Bxa5 Kd3 52. Qb3+ Kd4 53. Qc3+ Kd5 54. Qd3+ Kc5 55. Qf8+ Kc6
56. Qff3+ Kc5 57. Qfe3+ Kc6 58. Qb5+ Kd6 59. Bc7+ Kxc7 60. Qe7+ Kc8 61. Qa5
Kb8 62. Qf8+ Kb7 63. Qfb4+ Kc6 64. Qbb6+ Kd7 65. Qg5 Ke8 66. Qe6+ Kf8 67.
Qc8+ Kf7 68. Qd7+ Kf8 69. Qdd8+ Kf7 70. Qdf6+ Ke8 71. Qd6 Kf7 72. Qc7+ Ke6
73. Qd2 Kf5 74. Qdc2+ Ke6 75. Q2c3 Kf5 76. Qc8+ Ke4 77. Qd8 Kf5 78. Qg8 Ke4
79. Qa8+ Kf5 80. Qaf3+ Ke6 81. Qfc6+ Kf7 82. Qg6+ Ke7 83. Qa3+ Kd7 84.
Qad6+ Kc8 85. Qg8+ Kb7 86. Qf7+ Ka8 87. Qdd5+ Kb8 88. Qg2 Kc8 89. Qe8+ Kc7
90. Qec6+ Kd8 91. Kh6 Ke7 92. Kg6 Kf8 93. Qh3 Ke7 94. Qg4 Kf8 95. Qa8+ Ke7
96. Kh6 Kd6 97. Qg5 Kd7 98. Qg7+ Kd6 99. Qf6+ Kc5 100. Qaf8+ Kc4 101. Qf3
Kd4 102. Q8f6+ Kc5 103. Q3c3+ Kd5 104. Qfd4+ Ke6 105. Qe1+ Kf5 106. Qef2+
Ke6 107. Qe2+ Kf5 108. Qc5+ Kf6 109. a5 Kf7 110. Qce7+ Kg8 111. Kg6 Kh8
112. Kf6 Kg8 113. Kg5 Kh8 114. Qf3 Kg8 115. Qb3+ Kh8 116. Qb1 Kg8 117. Qf1
Kh8 118. Kg6 Kg8 119. Kh6 Kh8 120. Qfe1 Kg8 121. Kg6 Kh8 122. Kf6 Kg8 123.
Q1e2 Kh8 124. Qd3 Kg8 125. Kg6 Kh8 126. Kh6 Kg8 127. Kh5 Kh8 128. Qb5 Kg8
129. Kh6 Kh8 130. Kg6 Kg8 131. Kf6 Kh8 132. Kf5 Kg8 133. Kg6 Kh8 134. Kh6
Kg8 135. Kh5 Kh8 136. Qbc5 Kg8 137. Kg5 Kh8 138. Kh6 Kg8 139. Qc1 Kh8 140.
Qh1 Kg8 141. Qhe1 Kh8 142. Qc1 Kg8 143. Kh5 Kh8 144. Qc2 Kg8 145. Qd2 Kh8
146. Kg5 Kg8 147. Kh6 Kh8 148. Qg2 Kg8 149. Qf2 Kh8 150. Kh5 Kg8 151. Kg5
Kh8 152. Kg6 Kg8 153. Kf6 Kh8 154. Qg2 Kg8 155. Qf3 Kh8 156. Qfa3 Kg8 157.
Qb3+ Kh8 158. Qe8+ Kh7 159. a6 Kh6 160. Kf5 Kg7 161. Qba4 Kh7 162. Kg5 Kg7
163. Qd8 Kf7 164. Qad4 Ke6 165. Qc3 Kf7 166. Qb3+ Kg7 167. Qa3 Kf7 168.
Qf3+ Ke6 169. Qb3+ Ke5 170. Qbd3 Ke6 171. Qe2+ Kf7 172. Qf2+ Ke6 173. Qfd2
Ke5 174. Qc3+ Ke4 175. Kh5 Kf5 176. Qf8+ Ke6 177. Qcc5 Kd7 178. Qc2 Ke6
179. Qd3 Ke5 180. Kg5 Ke6 181. Qg8+ Ke5 182. Qh8+ Ke6 183. Qf8 Ke5 184. Kh5
Ke6 185. Kg6 Ke5 186. Kh6 Ke6 187. Kg7 Ke5 188. Qb8+ Ke6 189. Qbd8 Ke5 190.
Q3d4+ Kf5 191. Qb4 Ke5 192. Qdf8 Kd5 193. Qg8+ Kc6 194. Qc8+ Kd5 195. Qbc4+
Ke5 196. g4 Kd6 197. Qf5 Ke7 198. Qf8+ Kd7 199. Qff7+ Kd6 200. Qf6+ Kd7
201. Qfe6+ Kd8 202. Qg8+ Kd7 203. Qc3 Kd6 204. Qd4+ Kc7 205. Kh7 Kc6 206.
Qe8+ Kc7 207. Qed8+ Kc6 208. Qc8+ Kb5 209. Qcc4+ Ka5 210. Qa2+ Kb5 211. Kg7
Kc6 212. Qc2+ Kb5 213. Qda4+ Kb6 214. Qcc6+ Ka7 215. Qc8 Kb6 216. Qb8+ Kc5
217. Kf7 Kd5 218. Kf6 Kc5 219. Qf8+ Kb6 220. Qg7 Kc5 221. Qf7 Kd6 222. Qe7+
Kd5 223. Qee8 Kc5 224. Qc8+ Kb6 225. Qcd7 Kc5 226. Kf7 Kb6 227. Kg6 Kc5
228. Kf6 Kb6 229. Qb7+ Kc5 230. Kf7 Kd6 231. Qf4+ Kc5 232. Qfe4 Kd6 233.
Qd3+ Ke5 234. Qe3+ Kd6 235. Qg1 Ke5 236. Qh2+ Kd4 237. Qc6 Kd3 238. Qb2 Ke3
239. Qcf6 Kd3 240. Qd6+ Ke3 241. Qc5+ Kf3 242. Qce5 Kxg4 243. Qg2+ Kh4 244.
Qgg3#
{White mates} 1-0

This problem has come up before. Several different users, including myself, also noted this bug. I hope it is fixed in the next release. One important thing is that smarthink still manages to win before the 50-move rule, but what a waste of time.

[Uri Blass]

Geschrieben von: / Posted by: Uri Blass at 23 January 2004 22:16:50:
Als Antwort auf: / In reply to: Problem of Smarthink when mating with 2 queens geschrieben von: / posted by: Robert Allgeuer at 23 January 2004 21:50:59:

Interesting game below, probably a bug in Smarthink 017a.
In this game Smarthink does not know how to mate with the two queens, even though the PV most of the time shows a mate in 2 or 3 moves and the score is a mate score. Still it takes it ages to finally find a mate, and I assume this was more by luck ...

You assume wrong.
there is no luck.
Smarthink can see the mate all the time.
It is not important to play the fastest mate in order to win and a program may prune other moves when it finds the first mate.
Uri

[Dave Kuntzsch]

Geschrieben von: / Posted by: Dave Kuntzsch at 23 January 2004 23:46:50:
Als Antwort auf: / In reply to: Problem of Smarthink when mating with 2 queens geschrieben von: / posted by: Robert Allgeuer at 23 January 2004 21:50:59:

I have seen this problem several times. Yesterday, it was up a queen and rook against a lone king, predicted a mate in four, got down to one, and then avoided the mate and predicted mate in 101. It appeared to be moving randomly, but always avoided mating. Finally after about 220 moves it queened another pawn and stumbled into the mate about nine moves later.
Dave

Interesting game below, probably a bug in Smarthink 017a.
In this game Smarthink does not know how to mate with the two queens, even though the PV most of the time shows a mate in 2 or 3 moves and the score is a mate score. Still it takes it ages to finally find a mate, and I assume this was more by luck ...
Athlon 1.1Mhz, 96 MB hash, all 5piece EGTBs, 5min + 2 sec
Robert

[Event "SmarThink 0.17a Gauntlet"]
[Site "DISCO"]
[Date "2004.01.23"]
[Round "15.1"]
[Number "95"]
[White "SmarThink v0.17a"]
[Black "Crafty-MPC v18.15DC"]
[Result "1-0"]
[TimeControl "300+2"]
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8.
Bc3 Ne4 9. Bb2 d5 10. O-O Nd7 11. Nfd2 f5 12. Nxe4 fxe4 13. Bh3 Nf8 14. Qc2
Qd7 15. f3 Bf6 16. cxd5 exf3 17. dxc6 Bxd4+ 18. Kh1 Qd5 19. Rxf3 Bd3 20.
exd3 Qxf3+ 21. Bg2 Qf2 22. Qxf2 Bxf2 23. Na3 O-O-O 24. Nb5 a6 25. Na7+ Kb8
26. Rf1 Kxa7 27. Rxf2 a5 28. a4 Ka6 29. Rf7 e5 30. Bf1 Nd7 31. d4+ Ka7 32.
dxe5 Rhf8 33. Rxd7+ Rxd7 34. cxd7 Rxf1+ 35. Kg2 Rd1 36. e6 g5 37. Bf6 Kb7
38. d8=Q Rxd8 39. Bxd8 Kc6 40. Kf3 Kd6 41. e7 Kd7 42. Kg4 h6 43. h4 b5 44.
hxg5 bxa4 45. bxa4 h5+ 46. Kxh5 Ke8 47. g6 Kd7 48. g7 Kd6 49. e8=Q Kd5 50.
g8=Q+ Kd4 51. Bxa5 Kd3 52. Qb3+ Kd4 53. Qc3+ Kd5 54. Qd3+ Kc5 55. Qf8+ Kc6
56. Qff3+ Kc5 57. Qfe3+ Kc6 58. Qb5+ Kd6 59. Bc7+ Kxc7 60. Qe7+ Kc8 61. Qa5
Kb8 62. Qf8+ Kb7 63. Qfb4+ Kc6 64. Qbb6+ Kd7 65. Qg5 Ke8 66. Qe6+ Kf8 67.
Qc8+ Kf7 68. Qd7+ Kf8 69. Qdd8+ Kf7 70. Qdf6+ Ke8 71. Qd6 Kf7 72. Qc7+ Ke6
73. Qd2 Kf5 74. Qdc2+ Ke6 75. Q2c3 Kf5 76. Qc8+ Ke4 77. Qd8 Kf5 78. Qg8 Ke4
79. Qa8+ Kf5 80. Qaf3+ Ke6 81. Qfc6+ Kf7 82. Qg6+ Ke7 83. Qa3+ Kd7 84.
Qad6+ Kc8 85. Qg8+ Kb7 86. Qf7+ Ka8 87. Qdd5+ Kb8 88. Qg2 Kc8 89. Qe8+ Kc7
90. Qec6+ Kd8 91. Kh6 Ke7 92. Kg6 Kf8 93. Qh3 Ke7 94. Qg4 Kf8 95. Qa8+ Ke7
96. Kh6 Kd6 97. Qg5 Kd7 98. Qg7+ Kd6 99. Qf6+ Kc5 100. Qaf8+ Kc4 101. Qf3
Kd4 102. Q8f6+ Kc5 103. Q3c3+ Kd5 104. Qfd4+ Ke6 105. Qe1+ Kf5 106. Qef2+
Ke6 107. Qe2+ Kf5 108. Qc5+ Kf6 109. a5 Kf7 110. Qce7+ Kg8 111. Kg6 Kh8
112. Kf6 Kg8 113. Kg5 Kh8 114. Qf3 Kg8 115. Qb3+ Kh8 116. Qb1 Kg8 117. Qf1
Kh8 118. Kg6 Kg8 119. Kh6 Kh8 120. Qfe1 Kg8 121. Kg6 Kh8 122. Kf6 Kg8 123.
Q1e2 Kh8 124. Qd3 Kg8 125. Kg6 Kh8 126. Kh6 Kg8 127. Kh5 Kh8 128. Qb5 Kg8
129. Kh6 Kh8 130. Kg6 Kg8 131. Kf6 Kh8 132. Kf5 Kg8 133. Kg6 Kh8 134. Kh6
Kg8 135. Kh5 Kh8 136. Qbc5 Kg8 137. Kg5 Kh8 138. Kh6 Kg8 139. Qc1 Kh8 140.
Qh1 Kg8 141. Qhe1 Kh8 142. Qc1 Kg8 143. Kh5 Kh8 144. Qc2 Kg8 145. Qd2 Kh8
146. Kg5 Kg8 147. Kh6 Kh8 148. Qg2 Kg8 149. Qf2 Kh8 150. Kh5 Kg8 151. Kg5
Kh8 152. Kg6 Kg8 153. Kf6 Kh8 154. Qg2 Kg8 155. Qf3 Kh8 156. Qfa3 Kg8 157.
Qb3+ Kh8 158. Qe8+ Kh7 159. a6 Kh6 160. Kf5 Kg7 161. Qba4 Kh7 162. Kg5 Kg7
163. Qd8 Kf7 164. Qad4 Ke6 165. Qc3 Kf7 166. Qb3+ Kg7 167. Qa3 Kf7 168.
Qf3+ Ke6 169. Qb3+ Ke5 170. Qbd3 Ke6 171. Qe2+ Kf7 172. Qf2+ Ke6 173. Qfd2
Ke5 174. Qc3+ Ke4 175. Kh5 Kf5 176. Qf8+ Ke6 177. Qcc5 Kd7 178. Qc2 Ke6
179. Qd3 Ke5 180. Kg5 Ke6 181. Qg8+ Ke5 182. Qh8+ Ke6 183. Qf8 Ke5 184. Kh5
Ke6 185. Kg6 Ke5 186. Kh6 Ke6 187. Kg7 Ke5 188. Qb8+ Ke6 189. Qbd8 Ke5 190.
Q3d4+ Kf5 191. Qb4 Ke5 192. Qdf8 Kd5 193. Qg8+ Kc6 194. Qc8+ Kd5 195. Qbc4+
Ke5 196. g4 Kd6 197. Qf5 Ke7 198. Qf8+ Kd7 199. Qff7+ Kd6 200. Qf6+ Kd7
201. Qfe6+ Kd8 202. Qg8+ Kd7 203. Qc3 Kd6 204. Qd4+ Kc7 205. Kh7 Kc6 206.
Qe8+ Kc7 207. Qed8+ Kc6 208. Qc8+ Kb5 209. Qcc4+ Ka5 210. Qa2+ Kb5 211. Kg7
Kc6 212. Qc2+ Kb5 213. Qda4+ Kb6 214. Qcc6+ Ka7 215. Qc8 Kb6 216. Qb8+ Kc5
217. Kf7 Kd5 218. Kf6 Kc5 219. Qf8+ Kb6 220. Qg7 Kc5 221. Qf7 Kd6 222. Qe7+
Kd5 223. Qee8 Kc5 224. Qc8+ Kb6 225. Qcd7 Kc5 226. Kf7 Kb6 227. Kg6 Kc5
228. Kf6 Kb6 229. Qb7+ Kc5 230. Kf7 Kd6 231. Qf4+ Kc5 232. Qfe4 Kd6 233.
Qd3+ Ke5 234. Qe3+ Kd6 235. Qg1 Ke5 236. Qh2+ Kd4 237. Qc6 Kd3 238. Qb2 Ke3
239. Qcf6 Kd3 240. Qd6+ Ke3 241. Qc5+ Kf3 242. Qce5 Kxg4 243. Qg2+ Kh4 244.
Qgg3#
{White mates} 1-0

[Dann Corbit]

Geschrieben von: / Posted by: Dann Corbit at 24 January 2004 01:14:39:
Als Antwort auf: / In reply to: Re: Problem of Smarthink when mating with 2 queens geschrieben von: / posted by: Dave Kuntzsch at 23 January 2004 23:46:50:

I have seen this problem several times. Yesterday, it was up a queen and rook against a lone king, predicted a mate in four, got down to one, and then avoided the mate and predicted mate in 101. It appeared to be moving randomly, but always avoided mating. Finally after about 220 moves it queened another pawn and stumbled into the mate about nine moves later.

WHat time control were you using?



my ftp site {remove http:// unless you like error messages}

[Uri Blass]

Geschrieben von: / Posted by: Uri Blass at 24 January 2004 01:22:36:
Als Antwort auf: / In reply to: Re: Problem of Smarthink when mating with 2 queens geschrieben von: / posted by: Dann Corbit at 24 January 2004 01:14:39:

I have seen this problem several times. Yesterday, it was up a queen and rook against a lone king, predicted a mate in four, got down to one, and then avoided the mate and predicted mate in 101. It appeared to be moving randomly, but always avoided mating. Finally after about 220 moves it queened another pawn and stumbled into the mate about nine moves later.

WHat time control were you using?

Time control is 5 minutes per game+2 seconds per move based on the pgn.
Uri

[Dave Kuntzsch]

Geschrieben von: / Posted by: Dave Kuntzsch at 24 January 2004 21:42:51:
Als Antwort auf: / In reply to: Re: Problem of Smarthink when mating with 2 queens geschrieben von: / posted by: Dann Corbit at 24 January 2004 01:14:39:

I have seen this problem several times. Yesterday, it was up a queen and rook against a lone king, predicted a mate in four, got down to one, and then avoided the mate and predicted mate in 101. It appeared to be moving randomly, but always avoided mating. Finally after about 220 moves it queened another pawn and stumbled into the mate about nine moves later.

WHat time control were you using?

Straight 5 minute Blitz