Author: Rémi Coulom
Date: 02:50:46 07/26/00
Go up one level in this thread
On July 26, 2000 at 01:12:05, Steffen Jakob wrote:
>Here is yet another endgame position:
>
>[D]3R4/8/6p1/p1p2bk1/P1Pb4/1P5P/6B1/7K w
>
>It's from a game MissSilicon (nut) - Hossa. Misssi found the nice move b4!
>Andrew Dados told me that his program needs about 14 seconds (Andrew, do I
>remember right?) to find this move. I tried it with Hossa and it took ages. How
>does your favourite program perform? And another important question: is there
>another way to win this position for white?
>
>Best wishes,
>Steffen.
TCB/PIII 600/20 Mb hash
For the first question:
00:00:03,68 1293546 ------ Depth = 11
00:00:04,57 1602011 +248 1. Ra8 Bc3 2. Re8 Bd4 3. Re2 Kf6 4. h4 Bd3 5. Rd2
Bf5 6. Bf3
00:00:06,92 2402547 ------ Depth = 12
00:00:08,06 2812333 +248 1. Ra8 Bc3 2. Re8 Bd4 3. Re2 Kf6 4. h4 Be5 5. Re3
Bd4 6. Rg3 Be5
00:00:18,30 6327792 +249 1. b4
00:00:27,75 9694873 +277 1. b4 Bf6 2. Rf8 Bg7 3. Rg8 Bd4 4. b5 Kf4 5. b6
Bc8 6. Rxc8
00:00:27,81 9720745 ------ Depth = 13
00:01:11,37 25111641 +373 1. b4 Bf6 2. Rf8 axb4 3. h4+ Kxh4 4. Rxf6 Bd3 5.
Bd5 Bc2 6. Kg2 Bxa4 7. Rxg6 Bb3
00:01:11,61 25188925 ------ Depth = 14
00:02:10,34 44734577 +381 1. b4 Bf6 2. Rf8 cxb4 3. h4+ Kxh4 4. Rxf6 Bc2 5.
Ra6 b3 6. Rb6 g5 7. Rb5 Bd3 8. Rxb3
00:02:10,94 44941735 ------ Depth = 15
00:04:11,08 85176735 +387 1. b4 Bf6 2. Rf8 cxb4 3. h4+ Kxh4 4. Rxf6 Bc2 5.
Ra6 Bxa4 6. Be4 Bb3 7. c5 a4 8. Rb6 a3
00:04:12,83 85765322 ------ Depth = 16
00:08:31,91 170000242 +391 1. b4 Bf6 2. Rf8 axb4 3. h4+ Kxh4 4. Rxf6 Bd3 5.
a5 b3 6. a6 Bf5 7. Rb6 Bc2 8. Rb5 Kg3 9. a7 b2
00:08:35,54 171334508 ------ Depth = 17
For the second question, in 2-best mode, h4+ seems to be winning as well, but it
is only delaying b4 by one move:
00:00:39,17 12822840 ------ Depth = 13
00:01:07,81 22859505 +373 1. b4 Bf6 2. Rf8 axb4 3. h4+ Kxh4 4. Rxf6 Bd3 5.
Bd5 Bc2 6. Kg2 Bxa4 7. Rxg6 Bb3
00:01:12,28 24350096 +246 1. Ra8 Bc3 2. Rf8 Kf4 3. Kh2 Ke3 4. Re8+ Kd3 5.
Bf1+ Kc2 6. Kg2 Kxb3 7. Rb8+ Kxa4 8. Kf3 Ka3
00:02:21,10 47716062 ------ Depth = 14
00:03:03,88 61307646 +381 1. b4 Bf6 2. Rf8 cxb4 3. h4+ Kxh4 4. Rxf6 Bc2 5.
Ra6 b3 6. Rb6 g5 7. Rb5 Bd3 8. Rxb3
00:03:17,03 65831430 +245 1. Ra8 Bc3 2. Rf8 Bd4 3. Rb8 Kh4 4. Rb7 Bc2 5.
Kh2
00:03:38,18 73134046 +245 1. Rb8 Bc3 2. Rf8
00:05:21,48 109983478 +280 1. h4+ Kxh4 2. b4 Bf6 3. Rf8 Bc3 4. b5 Bc2 5. b6
Bxa4 6. b7 Be5 7. b8=R
00:05:23,10 110559950 ------ Depth = 15
00:06:59,18 144665137 +387 1. b4 Bf6 2. Rf8 cxb4 3. h4+ Kxh4 4. Rxf6 Bc2 5.
Ra6 Bxa4 6. Be4 Bb3 7. Ra7 Bxc4 8. Bxg6 a4
00:09:14,43 189528378 +285 1. h4+ Kxh4 2. b4 Bf6 3. Rf8 Bc3 4. b5 Bc2 5. b6
Bxa4 6. b7 Be5 7. b8=Q Bxb8 8. Rxb8
00:11:11,90 232421110 ------ Depth = 16
00:16:28,85 338273447 +402 1. b4 axb4 2. a5 Bf6 3. a6 Bxd8 4. a7 Bf6 5. a8=Q
Bd4 6. Qd8+ Kf4 7. Qc7+ Ke3 8. Qg3+ Kd2 9. Bd5
Bd3 10. Kg2
00:23:31,90 493872803 +302 1. h4+ Kxh4 2. b4 axb4 3. a5 Bf6 4. a6 Bxd8 5. a7
Kg5 6. a8=Q Bf6 7. Be4 Kf4 8. Bxf5 gxf5 9. Kg2
Bd4 10. Qf3+
00:25:03,97 526463082 ------ Depth = 17
Remi
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