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Subject: Re: Nice rook endgame - Testposition

Author: Dieter Buerssner

Date: 10:35:28 08/21/02

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On August 20, 2002 at 22:29:44, Eduard Nemeth wrote:

>R7/8/6p1/5p2/5P1p/3k3P/p4KP1/r7 b - -

Yace, current developement version, with some luck - I think it needs the
"right" contents of HTs, because looking at the pawn endgame, I think it would
depth 26 or so.

 168540258 16:52.6   1.93 20t+ 1...Rc1 2. Rxa2 Rc2+ 3. Rxc2 Kxc2 4. Kf3 Kd1 5.
                               g3 Ke1 6. gxh4 Kd2 7. Kf2 Kd3 8. Kf3H Kd4H 9.
                               Kf2H Ke4H 10. Kg1H Kxf4H 11. Kf1H Kf3H 12. Kg1H
                               f4H 13. Kf1H Ke3H 14. Kg2H f3+H 15. Kg3H {HT}
                               {0}
 170663742 17:09.6   1.93 20t  1...Rc1 2. Rxa2 Rc2+ 3. Rxc2H Kxc2H 4. Ke2H
                               Kc3H 5. Ke3H Kc4H 6. Ke2H Kd4H 7. g3H Kc3H 8.
                               Ke3H g5H 9. fxg5H hxg3H 10. g6H Kc2H 11. g7H
                               g2H 12. g8=QH f4+H 13. Kxf4H g1=RH {HT}
 179880011 18:07.6   1.93 20.  1...Rc1 2. Rxa2 Rc2+ 3. Rxc2 Kxc2 4. Ke2 Kc3 5.
                               Ke3 Kc4 6. Ke2 Kd4 7. g3 Kc3 8. Ke3 g5 9. fxg5
                               hxg3 10. g6 Kc2 11. g7 g2 12. g8=Q f4+ 13. Kxf4
                               g1=R
 189230020 19:48.7   1.53 21-- 1...Rc1 2. Rxa2 Rc2+ 3. Rxc2 Kxc2 4. Ke2 Kc3 5.
                               Ke3 Kc4 6. Ke2 Kd4 7. g3 hxg3 8. Kf3 g5 9. fxg5
                               f4 10. g6 Kd3 11. Kg2 Ke2 12. g7 f3+ 13. Kxg3
                               f2 14. g8=Q f1=R
 231048073 24:53.1   1.50 21t  1...Rc1 2. Rxa2 Rc2+ 3. Rxc2 Kxc2 4. Ke2 Kc3 5.
                               Ke3 Kc4H 6. Kd2H Kd4H 7. g4H fxg4H 8. hxg4H h3H
                               9. Ke2H h2H 10. f5H h1=QH 11. f6H {HT}
 256159806 27:12.5   1.51 21t+ 1...Kd4 2. Ra3
 314212592 32:42.6   1.92 21t  1...Kd4 2. Ra3 Kc4 3. Ra8 Kb5 4. Rb8+ Ka6 5.
                               Ra8+ Kb6 6. Ra3H Kb5H 7. Ra8H Kb4H 8. Rb8+H
                               Ka4H 9. Ra8+H Kb5H 10. Rb8+H Ka6H 11. Ra8+H
                               Kb6H 12. Ra3H Kb5H 13. Ra8H Kb4H 14. Rb8+H Ka4H
                               15. Ra8+H Kb5HR {80}
 426241503 44:27.6   1.92 21.  1...Kd4 2. Ra3 Kc4 3. Ra8 Kb5 4. Rb8+ Ka6 5.
                               Ra8+ Kb6 6. Ra3 Kb5 7. Ra8 Kb4 8. Rb8+ Ka4 9.
                               Ra8+ Kb5 10. Rb8+ Ka6 11. Ra8+ Kb6 12. Ra3 Kb5
                               13. Ra8 Kb4 14. Rb8+ Ka4 15. Ra8+ Kb5 {80}
 536191652 56:12.0   1.92 22t  1...Kd4 2. Ra3 Kc4 3. Ra8 Kb5 4. Rb8+ Kc5 5.
                               Rc8+ Kd4 6. Ra8H {HT}
 607042718 1:04:37   1.93 22t+ 1...Rc1 2. Rxa2 Rc2+ 3. Rxc2 Kxc2 4. Ke2 Kc3 5.
                               Ke3 Kc4 6. Kd2 Kd4 7. g4 fxg4 8. hxg4 h3 9. Ke2
                               h2 10. f5 h1=Q 11. f6
 625155042 1:07:19   1.93 22t  1...Rc1 2. Rxa2 Rc2+ 3. Rxc2H Kxc2H 4. Ke2H
                               Kc3H 5. Ke3H Kc4H 6. Kf3H Kd4H 7. Kf2H Kc4H 8.
                               g3H Kd3H 9. Kf3H Kd2H 10. Kf2H Kd1H 11. Kf3H
                               Ke1H 12. Ke3H Kf1H 13. Kf3H Kg1H 14. Ke2H Kh2H
                               15. Kd3H Kxh3H 16. Kc2H g5H {HT} {80}
 855352208 1:32:20   1.93 22.  1...Rc1 2. Rxa2 Rc2+ 3. Rxc2 Kxc2 4. Ke2 Kc3 5.
                               Ke3 Kc4 6. Kf3 Kd4 7. Kf2 Kc4 8. g3 Kd3 9. Kf3
                               Kd2 10. Kf2 Kd1 11. Kf3 Ke1 12. Ke3 Kf1 13. Kf3
                               Kg1 14. Ke2 Kh2 15. Kd3 Kxh3 16. Kc2 g5 {HT}
                               {80}

Regards,
Dieter




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