Author: Dieter Buerssner
Date: 13:39:57 07/28/02
Go up one level in this thread
On July 28, 2002 at 00:40:23, Slater Wold wrote:
>8/8/8/7n/8/7N/3kp1K1/5n2 w - - 0 1
>
>Nf1 to draw. Sure you find Nf1, but do you see the draw?
With TBs, Yace on K6-2 475 sees a draw score in 6 seconds.
153577 1.528 -6.86 9++ 1. Ng1 Nf4+ 2. Kh1 Ng3+ 3. Kh2 Kd3 4. Nf3 Ng6
5. Ne1+ Kd2 6. Nf3+ Kc3
167408 1.637 -5.86 9++ 1. Ng1 Nf4+ 2. Kh1 Ng3+ 3. Kh2 Ng2 4. Kxg2 e1=R
238819 2.006 -0.94 9t 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nd5
5. Nxe2H Nge3H 6. Kg1H Kd3H 7. Nf4+H Kd2H {-340}
239456 2.022 -0.94 9. 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nd5
5. Nxe2 Nge3 6. Kg1 Kd3 7. Nf4+ Kd2 {-340}
302625 2.375 -0.94 10t 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 e1=B
5. Nf3+ Kd3 6. Nxe1+ Kd4 7. Nd3H Nd5H 8. Kg2H
Nge3+H 9. Kh3H {-340}
303756 2.406 -0.94 10. 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 e1=B
5. Nf3+ Kd3 6. Nxe1+ Kd4 7. Nd3 Nd5 8. Kg2
Nge3+ 9. Kh3 {-340}
414226 2.958 -0.94 11t 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 e1=N
5. Nf3+ Ke3 6. Nxe1 Ne2 7. Nf3 Nf2+ 8. Kg2 Nf4+
9. Kg3H N2d3H {-340}
416173 2.982 -0.94 11. 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 e1=N
5. Nf3+ Ke3 6. Nxe1 Ne2 7. Nf3 Nf2+ 8. Kg2 Nf4+
9. Kg3 N2d3 {-340}
523494 3.531 -0.91 12t 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nf2+
5. Kh2 e1=Q 6. Nf3+ Ke3 7. Nxe1 Ne2 8. Ng2+ Kf3
9. Nf4 Ng3 10. Kg1H Nge4H 11. Kf1H {-340}
527313 3.623 -0.91 12. 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nf2+
5. Kh2 e1=Q 6. Nf3+ Ke3 7. Nxe1 Ne2 8. Ng2+ Kf3
9. Nf4 Ng3 10. Kg1 Nge4 11. Kf1 {-340}
777635 4.984 -0.90 13t 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nf2+
5. Kh2 e1=Q 6. Nf3+ Ke3 7. Nxe1 Ne2 8. Nc2+ Ke4
9. Nd4 Nf4H 10. Ne6H Nd5H 11. Ng5+H Kd4H 12.
Ne6+H Ke5H {-340}
783191 5.047 -0.90 13. 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nf2+
5. Kh2 e1=Q 6. Nf3+ Ke3 7. Nxe1 Ne2 8. Nc2+ Ke4
9. Nd4 Nf4 10. Ne6 Nd5 11. Ng5+ Kd4 12. Ne6+
Ke5 {-340}
917370 5.821 0.00 14++ 1. Ng1 Ne3+ 2. Kh3 Nf4+ 3. Kh2 Ng4+ 4. Kh1 Nf2+
5. Kh2 e1=Q 6. Nf3+ Ke3 7. Nxe1 {EGTB} 7...N2d3
8. Nc2+ Kf3 9. Na3 Nb4 10. Nc2 Nbd3 11. Na3 Nb4
12. Nc2 Nbd3 {repetition} {-340}
929766 5.989 0.00 14t 1. Ng1 Ne3+ 2. Kh3 Nf4+H 3. Kh2H Ng4+H 4. Kh1H
Nf2+H 5. Kh2H e1=QH 6. Nf3+H Ke3H 7. Nxe1H
{EGTB} 7...Nd5 8. Nc2+ Kf3 9. Na3 Nb6 10. Nc2
Nd5 11. Na3 Nb6 12. Nc2 Nd5 {repetition} {-340}
[And no change anymore]
>8/4kP2/6P1/8/3rB1r1/2P3P1/6PK/8 w - - 0 1
>
>Bf5 to draw. And Bf3 does _not_ work.
Here Yace needs a very long time - over 4 hours:
43167727 4:23.4 -0.25 16. 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. g4 Rxg2 7. Kf5 Rc2H {HT} {-180}
71564719 7:17.3 -0.52 17t 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. c4 Rxg2 7. Kf5 Rxg3 8. c5 Rf3+ 9.
Ke6 Rc3 10. Kf6 {-260}
94812369 9:45.1 -0.52 17. 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. c4 Rxg2 7. Kf5 Rxg3 8. c5 Rf3+ 9.
Ke6 Rc3 10. Kf6 {-260}
157519608 16:04.4 -0.70 18t 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. Kf6 Rf2+ 7. Ke6 Rxg2 8. Kf6 Rf2+
9. Kg5 Rf3 10. c4 Rxg3+ 11. Kf6 Rf3+ 12. Ke6H
Re3+H 13. Kf6H Re5H {HT} {-260}
204514965 20:45.3 -0.70 18. 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. Kf6 Rf2+ 7. Ke6 Rxg2 8. Kf6 Rf2+
9. Kg5 Rf3 10. c4 Rxg3+ 11. Kf6 Rf3+ 12. Ke6
Re3+ 13. Kf6 Re5 {HT} {-260}
339480577 33:49.2 -0.86 19t 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. Kf6 Rf2+ 7. Ke6 Rxg2 8. Kf6 Rf2+
9. Ke6 Ra2 10. g4 Ra6+ 11. Kf5 Rc6 12. g5 {-180}
441511568 43:45.4 -0.86 19. 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Rd2 6. Kf6 Rf2+ 7. Ke6 Rxg2 8. Kf6 Rf2+
9. Ke6 Ra2 10. g4 Ra6+ 11. Kf5 Rc6 12. g5 {-180}
778827879 1:15:36 -0.87 20t 1. Bf3 Ra4 2. Bd1 Rge4 3. Bc2 Kf8 {HT}
996656418 1:36:40 -0.87 20. 1. Bf3 Ra4 2. Bd1 Rge4 3. Bc2 Kf8
1143630376 1:50:28 -1.27 21-- 1. Bf3 Ra4 2. Bd1 Kf8 3. Kh3 Ra1 4. Kxg4 Rxd1
5. Kg5 Kg7 6. g4 Rg1 7. Kf4 Rxg2 8. g5 Rc2 9.
c4 Rxc4+ 10. Ke5 Rc5+ 11. Kd6 Rxg5 12. Ke6
1722588210 2:46:18 -1.28 21t 1. Bf3 Ra4 2. Bd1 Kf8 {HT}
2703962187 4:21:08 -1.27 21t+ 1. Bf5 Rc4 2. Be6 Kxe6 3. f8=Q Rxc3
3769914951 6:03:26 -1.07 21t 1. Bf5 Rc4 2. Be6 Kf8 3. Kh3 Rge4 4. Bd5 Kg7 5.
Kh2 Ra4 6. Bc6 Rec4 7. Bb5 Rg4 8. Bd7 Rac4 9.
Be6 Rce4 10. Bf5 Kf8 11. Kh3 {-250}
4220097892 6:46:50 -1.07 21. 1. Bf5 Rc4 2. Be6 Kf8 3. Kh3 Rge4 4. Bd5 Kg7 5.
Kh2 Ra4 6. Bc6 Rec4 7. Bb5 Rg4 8. Bd7 Rac4 9.
Be6 Rce4 10. Bf5 Kf8 11. Kh3 {-250}
2512939255 11:01:48 -0.68 22t 1. Bf5 Ra4 2. Bd7 Rgc4 3. Bb5H Rxc3H {HT} {-330}
Regards,
Dieter
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