Author: Robert Hyatt
Date: 07:24:35 01/22/02
Go up one level in this thread
On January 22, 2002 at 03:44:29, Dann Corbit wrote: >On January 22, 2002 at 02:55:40, David Rasmussen wrote: > >>[D]8/r7/8/p2k4/R3p1K1/8/8/8 b - - 0 67 >> >>Can your program find Kc5! (there maybe other winning moves, like Kc6), and can >>it specifically avoid Ke5, which only draws? In other words, I don't know all >>the moves that wins and all the moves that draws, but can your program find a >>winning move without tablebases, and even understand what is going on? > >Just to make us all feel silly, ChessMaster solved it without tablebase files. >In 2 seconds. >! > >Time Depth Score Positions Moves > >0:00 5/6 -1.78 24793 1...Ke5 2. Kg3 Ra6 3. Kf2 Kf4 4. > Ke2 >0:00 6/7 -1.73 70036 1...Ke5 2. Kg3 Ra8 3. Kf2 Kf4 4. > Ke2 Ra6 5. Ra3 >0:01 7/8 -1.78 206411 1...Ke5 2. Kg3 Ra8 3. Kg2 Kf4 4. > Kf2 Ra6 5. Ke2 >0:02 7/8 -1.82 432307 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 Kb4 5. Ra1 a4 >0:02 8/9 -1.82 560571 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 Kb4 5. Ra1 a4 >0:07 9/10 -1.92 1501578 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 Kb4 5. Ra1 a4 6. Rb1+ Kc5 >0:19 10/11 -1.92 4010599 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 Kb4 5. Ra1 a4 6. Rb1+ Kc3 7. > Ra1 >0:55 11/12 -1.99 11562481 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 a4 5. Ra1 Ka5 6. Ra2 Kb4 7. > Rb2+ Kc5 >2:44 12/13 -2.16 34367143 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 a4 5. Ra1 Kb4 6. Rb1+ Ka3 7. > Kd2 Ra7 8. Ke3 >8:49 13/14 -2.17 110912873 1...Kc5 2. Kf4 Kb5 3. Ra3 Re7 4. > Ke3 a4 5. Ra1 Kb4 6. Rb1+ Ka3 7. > Kd4 e3 8. Kc3 Ka2 9. Rb2+ Ka1 Look at the scores. It didn't solve anything. It just happened to like Kc5 a tiny bit better than the alternatives... It hasn't seen _anything_ yet, from an "understanding" point of view..
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