Author: Mark Young
Date: 09:13:36 10/13/98
Go up one level in this thread
On October 12, 1998 at 22:01:43, Robert Hyatt wrote:
>On October 11, 1998 at 13:41:16, John Coffey wrote:
>
>>Can a program like crafty win KQ vs. KR without tablebases? (Assuming a
>>minute or so per move?)
>>
>>John Coffey
>
>
>Crafty can't... I doubt any program can. Most GM's can't until they
>study it... I was at the ACM event where Browne tried to beat Belle and
>failed miserably several times. He studied it, then at the rematch
>he won easily. But it is non-trivial the first time, and I have had
>an occasional GM get into this ending on ICC and offer a draw immediately.
I let Fritz 5 play a random position of KR VS KQ I let fritz 5 with KR have use
of the tablebase. I did not let Fritz 5 with KQ make use of the tablebase. Fritz
5 was set set on 20 sec. a move and the position was a mate in 34. Fritz 5 with
KQ and no tablebase was able to beat Fritz 5 with KR and tablebase with just 20
sec a move. Here is the game and position.
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Fritz 5 with Tablebase"]
[Black "Fritz 5 no tablebase"]
[Result "0-1"]
[Annotator "Young,M"]
[SetUp "1"]
[FEN "k6q/8/8/4R3/4K3/8/8/8 w - - 0 1"]
[PlyCount "78"]
{W=6.4 ply, B=10.6ply} 1. Rb5 {Both out of book -#34/192 1} 1... Qe8+ {
-4.50/12 19} 2. Re5 {-#33/192 1} 2... Qc6+ {-4.47/12 22} 3. Kd4 {
(Kf5) -4.28/192 2} 3... Kb7 {-4.44/11 14} 4. Rc5 {-4.31/192 3} 4... Qd6+ {
-4.44/12 18} 5. Rd5 {(Kc4) -#30/192 2} 5... Qb4+ {-4.47/12 26} 6. Ke5 {
-#30/192 2} 6... Kc6 {-4.63/12 22} 7. Rd3 {-#29/192 2} 7... Qe7+ {-4.53/11 25}
8. Kd4 {-#28/192 1} 8... Qg7+ {-4.53/11 23} 9. Ke4 {-4.53/192 2} 9... Kc5 {
-4.63/11 24} 10. Kf4 {(Ra3) -4.44/192 3} 10... Kc4 {(Qf6+) -4.44/11 21} 11. Rg3
{(Rd1) -#25/192 2} 11... Qd4+ {-4.59/11 18} 12. Kg5 {-#25/192 1} 12... Kd5 {
-4.50/11 24} 13. Rf3 {-#24/192 3} 13... Qg7+ {-4.44/11 23} 14. Kf4 {
(Kh5) -4.63/192 2} 14... Kd4 {(Qe5+) -4.59/11 17} 15. Kf5 {-#23/192 1} 15...
Qf7+ {-4.50/11 15} 16. Kg4 {-#22/192 1} 16... Qg6+ {-4.44/12 24} 17. Kf4 {
-#21/192 1} 17... Qh6+ {-4.56/12 22} 18. Kg4 {-#21/192 1} 18... Ke4 {
-4.50/12 22} 19. Rf2 {(Rg3) -#20/192 1} 19... Qg6+ {-4.44/11 19} 20. Kh4 {
-#19/192 1} 20... Qd6 {-4.28/11 12} 21. Kg4 {-#18/192 2} 21... Qd1+ {-8.94/9 3}
22. Kg3 {-#17/192 2} 22... Qg1+ {-8.47/12 20} 23. Rg2 {-#16/192 1} 23... Qe3+ {
-8.44/11 13} 24. Kh2 {-#15/192 1} 24... Kf4 {-8.28/11 13} 25. Rg7 {-#14/192 1}
25... Qf2+ {-8.66/11 17} 26. Kh3 {-#13/192 1} 26... Qf3+ {-8.53/10 9} 27. Kh2 {
-#12/192 1} 27... Qh5+ {-8.53/11 14} 28. Kg2 {-#11/192 1} 28... Qe8 {-8.81/9 5}
29. Rc7 {(Kg1) -4.44/192 4} 29... Qe2+ {-9.00/9 6} 30. Kg1 {(Kh3) -#12/192 1}
30... Qb2 {-9.00/10 8} 31. Kf1 {-9.06/192 3} 31... Kg3 {-9.19/10 6} 32. Rf7 {
-#10/192 2} 32... Qb3 {-9.47/11 7} 33. Rg7+ {(Ke2) -#9/192 2} 33... Kf3 {
-9.56/12 7} 34. Ke1 {-#8/192 2} 34... Qc3+ {-#8/12 10} 35. Kd1 {-#7/192 1}
35... Qxg7 {-#8/12 8} 36. Kc2 {-#7/11 2} 36... Qd4 {-#6/10 2} 37. Kb3 {-#5/10 2
} 37... Ke3 {-#5/8 1} 38. Kc2 {-#5/8 1} 38... Qd3+ {-#5/6 1} 39. Kc1 {-#4/7 1}
39... Qd2+ {-#4/5 1} 0-1
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