Author: Omid David Tabibi
Date: 09:56:00 12/29/03
Go up one level in this thread
On December 29, 2003 at 11:09:51, Brian Katz wrote:
>[D]8/r7/8/5bk1/8/5B2/5RPP/6K1 b
> The position above, which is the one we have been looking at for the
>past few days, is pretty interesting in that if you have the Tablebases turned
>on, it finds the solution
>correctly with also the correct =(0.00) evaluation that some engines don’t give.
>This is an 8 piece endgame, yet the program sees through to a 5 piece endgame
>with the Tablebases. That is pretty impressive. It finds the solution as =(0.00)
>rather than =(0.12). Most engines without Tablebases, find the correct sequence
>of moves, with basically a drawn evaluation, but some don’t realize that the
>evaluation should be =(0.00)
>
> Below, is a similar position to the one we have been looking for the last few
>days. I expanded on the position as mentioned by one of the posters by adding a
>file h pawns and moving the Black King to h8.
>This position is a 13 piece endgame. Let’s see if the Tablebases can see Thru 13
>pieces to a 5 piece endgame.
>
>[D]7k/r6P/7P/5b1P/7P/5B1P/5RPP/6K1 b
First of all, this position is illegal (how did the h3 pawn get there?!). But
anyway:
Falcon 1.0.0.1 running on GenuineIntel 733MHz 256MB:
depth time nodes nps score variation
3/8 0.00 0k 0k -2.11 1...a7a1 1.f2f1 a1a2 2.f3d5
4/10 0.02 1k 54k -2.13 1...a7a1 1.f2f1 a1a2 2.g2g3 a2d2
3.h2h4 g5f6
5/11 0.04 2k 59k -2.15 1...a7a1 1.f2f1 a1a2 2.f3d5 a2d2
3.h2h4 g5g4
6/15 0.11 16k 146k -2.34 1...a7a1 1.f2f1 a1f1 2.g1f1 f5d3
3.f1f2 g5h4 4.f3d5 h4g4
7/15 0.29 54k 186k -2.36 1...a7a1 1.f2f1 a1f1 2.g1f1 g5h4
3.f1f2 f5e6 4.f3e4 e6c4
8/15 0.78 160k 204k -2.35 1...a7a1 1.f2f1 a1f1 2.g1f1 f5d3
3.f3e2 d3e4 4.g2g3 g5f5 5.h2h4 f5e5
9/17 1.32 288k 217k -2.05 1...a7a1
9/17 1.33 289k 217k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
10/15 1.37 299k 218k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
11/17 1.47 331k 225k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
12/19 1.67 386k 231k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
13/19 2.22 534k 240k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
14/21 3.65 910k 249k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
15/23 7.31 1921k 262k 0.00 1...a7a1 1.f2f1 a1f1 2.g1f1
>
>This was after almost an hour and a half of analysis with the Tablebases turned
>on. Tablebase setting of 3 in Engine Parameters. Then again at a setting of 0
>(Zero).
>Beneath that will be a Half Hour of analysis without the use of Tablebases.
>Notice, without the Tablebases, it takes longer to evaluate the position even
>though this is not a 5 piece ending. The last analysis showing was at 59 min, 40
>secs with the Tablebase setting of 3. Further down I also have analysis with the
>Tablebase setting lowered to 0 rather than the default setting of 3. There are
>some interesting differences….
>Below that will be with no Tablebases at all For Fritz 8.
>After that you will see YACE PADERBORN FINDING = (0.00) IN ONLY 8 SECONDS!!
>
>ENJOY
>
>Analysis by Fritz 8: With a Tablebase setting of 3.
>
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bf3
>8.h3 Bd5
> ± (0.78) Depth: 12/20 00:00:00 178kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 396kN, tb=2
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 396kN, tb=2
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 396kN, tb=2
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 396kN, tb=2
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 396kN, tb=2
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 396kN, tb=2
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 14/22 00:00:00 620kN, tb=6
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bd1 Bg4 9.Bc2 Bf5 10.Bd1
> ² (0.59) Depth: 15/26 00:00:00 1153kN, tb=26
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bd1 Bg4 9.Bb3 Kxh5 10.Bf7+ Kxh4 11.Bd5
> ² (0.59) Depth: 16/27 00:00:01 1703kN, tb=70
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Be2 Bg4 9.Bd3 Kxh5 10.Ke5 Bf5 11.Bc4
> ² (0.53) Depth: 17/28 00:00:02 3281kN, tb=243
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Be2 Bg4 9.Bd3 Kxh5 10.Ke5 Bf5 11.Bc4
> ² (0.53) Depth: 18/30 00:00:04 5016kN, tb=519
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Be2 Bg4 9.Bd3 Kxh5 10.Ke5 Kxh4 11.Kd4
> ² (0.41) Depth: 19/31 00:00:08 9608kN, tb=1777
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kh6
> ² (0.41) Depth: 20/36 00:00:12 15063kN, tb=3553
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kh6
> ² (0.41) Depth: 21/34 00:00:22 27468kN, tb=6398
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kh6
> = (0.25) Depth: 22/36 00:00:50 62073kN, tb=11499
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kh6
> = (0.25) Depth: 23/38 00:01:11 89755kN, tb=15051
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kg6 9.Kf4 Bh3 10.Bf3 Bg4 11.Be4+
> = (0.22) Depth: 24/42 00:02:35 193158kN, tb=26720
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kg6 9.Kf4 Bh3 10.Bf3 Bg4 11.Bc6
> = (0.22) Depth: 25/43 00:03:51 286461kN, tb=34079
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kg6 9.Kf4 Bh3 10.Bf3 Bg4 11.Bc6
> = (0.22) Depth: 26/62 00:06:21 455282kN, tb=48921
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kg6 9.Kf4 Bh3 10.Bf3 Bg4 11.Bc6
> = (0.22) Depth: 27/57 00:11:30 831796kN, tb=77827
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Kxh5
>8.Bg4+ Kg6 9.Kf4 Bh3 10.Bf3 Bg4 11.Bc6
> = (0.22) Depth: 28/88 00:21:09 1564813kN, tb=137681
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Kg3 Kxh6 7.Be6 Bh3
>8.Bf7 Bf1 9.Bd5 Bg2
> = (0.19) Depth: 29/92 00:59:40 4335937kN, tb=271563
>
>(Katz, Eatontown 28.12.2003)
>Below I have the analysis with the Tablebases turned on with a Parameter setting
>of 0. (Zero) The lower the setting, the more Tablebase hits. The higher the
>setting, the less Tablebase hits.
>Notice the difference in the analysis times and the evaluations. With the
>Default Tablebase setting as above, the closest evaluation to a draw was =
>(0.19) reached at 59 min, 40 seconds, and that was the last showing evaluation
>after one and a half hours.
>
>In the below example, with the Tablebase setting set at 0, = (0.19) evaluation
>was reached at only 00:26:48 and = (0.03) was reached at 00:55:15. At 02:24:06
>it displayed another evaluation or = (0.03). Notice the kN count (7,669,142)and
>also the tb=4,252,495. Also, notice the Depth of 30/98. I stopped the analysis
>at approx. 4 hours, with no change since the 02:24:06 mark. It appears that the
>Tablebases , or at least the more frequent TB hits do make a difference in the
>outcome.
>How will this affect playing strength?
>Question: If you have a fast processor, will the engine play stronger with the
>lower Tablebase setting? It has been said that setting it too low, allowing more
>and earlier Tablebase hits, can slow down the engine, but if it can see further
>into the position , won’t it increase the playing strength. I can see if a slow
>processor is being used, a problems may result, resulting in a slowdown, but in
>this case, I am using an AMD Athlon XP 2600+ 1 Gig DDR SDRAM.
>
>Analysis by Fritz 8: With a Tablebase setting of 0.
>
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7 6.Ke3 Bd5 7.Bd3+ Kxh6
> ± (0.78) Depth: 7/13 00:00:00 14kN, tb=1
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7 6.Ke3 Bd5 7.Bd3+ Kxh6
> ± (0.78) Depth: 8/14 00:00:00 18kN, tb=1
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7 6.Ke3 Bd5 7.Kd4 Kxh6
> ± (0.75) Depth: 9/19 00:00:00 29kN, tb=6
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7
> ± (0.75) Depth: 10/19 00:00:00 42kN, tb=9
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Bg4 Kxh7
> ± (0.75) Depth: 11/19 00:00:00 112kN, tb=16
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bf3
>8.h3 Bd5
> ± (0.78) Depth: 12/20 00:00:00 177kN, tb=47
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 395kN, tb=94
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 14/22 00:00:01 621kN, tb=215
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bd1 Bg4 9.Bc2 Bf5 10.Bd1
> ² (0.59) Depth: 15/26 00:00:03 1145kN, tb=699
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bd1 Bg4 9.Bc2 Bf5 10.Bd1 Be4
> ² (0.56) Depth: 16/27 00:00:04 1840kN, tb=1635
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kf4 Bh3
>8.Be2 Bg2 9.Kg3 Kh7
> ² (0.47) Depth: 17/27 00:00:08 3442kN, tb=3895
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Be2 Bg2
> ² (0.44) Depth: 18/29 00:00:12 5848kN, tb=7669
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Kf4 Bf3
> ² (0.37) Depth: 19/33 00:00:18 10244kN, tb=12215
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Kf4 Bf3
> ² (0.37) Depth: 20/36 00:00:25 15375kN, tb=17168
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Kf4 Bf3
> ² (0.28) Depth: 21/39 00:00:40 29737kN, tb=27324
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Kf4 Bf3
> ² (0.28) Depth: 22/36 00:00:59 45355kN, tb=38359
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Kf4 Bf3
> ² (0.28) Depth: 23/44 00:01:31 76347kN, tb=52235
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Kf4 Bf3 11.Bd7
> ² (0.28) Depth: 24/40 00:02:43 137296kN, tb=101864
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Be2 Bc4 11.Bd1
> = (0.25) Depth: 25/62 00:05:23 295798kN, tb=173128
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bg4+ Kh6 10.Be2 Bb3 11.Bf3
> = (0.22) Depth: 26/48 00:12:47 735962kN, tb=290678
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Bd5 9.Bd7 Be6 10.Be8+ Bf7 11.Bc6
> = (0.19) Depth: 27/77 00:26:48 1670420kN, tb=508937
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Be4 9.Bg4+ Kh6 10.Kf2 Bg2 11.Bd7
> = (0.03) Depth: 28/86 00:55:15 3583101kN, tb=948398
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Be4 9.Bg4+ Kh6 10.Kf2 Bg2 11.Bd7
> = (0.03) Depth: 29/98 01:23:30 4879148kN, tb=1993294
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Kxh5
>8.Be6 Be4 9.Bg4+ Kh6 10.Kf2 Bg2 11.Bd7
> = (0.03) Depth: 30/98 02:24:06 7669142kN, tb=4252495
>
>(Katz, Eatontown 29.12.2003)
>
>Analysis by Fritz 8: With No Tablebases
>
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7 6.Ke3 Bd5 7.Bd3+ Kxh6
> ± (0.78) Depth: 7/13 00:00:00 14kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7 6.Ke3 Bd5 7.Bd3+ Kxh6
> ± (0.78) Depth: 8/14 00:00:00 18kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7 6.Ke3 Bd5 7.Kd4 Kxh6
> ± (0.75) Depth: 9/19 00:00:00 29kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Be2 Kxh7
> ± (0.75) Depth: 10/19 00:00:00 42kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Kf2 Bxg2 5.Bg4 Kxh7
> ± (0.75) Depth: 11/19 00:00:00 112kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bf3
>8.h3 Bd5
> ± (0.78) Depth: 12/20 00:00:00 178kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 13/22 00:00:00 398kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bf3 Bg4 9.Be4 Kxh5
> ± (0.72) Depth: 14/22 00:00:00 624kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bd1 Bg4 9.Bc2 Bf5 10.Bd1
> ² (0.59) Depth: 15/26 00:00:00 1171kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Bd1 Bg4 9.Bb3 Kxh5 10.Bf7+ Kxh4 11.Bd5
> ² (0.59) Depth: 16/27 00:00:01 1730kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Be2 Bg4 9.Bd3 Kxh5 10.Ke5 Bf5 11.Bc4
> ² (0.53) Depth: 17/29 00:00:02 3420kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Ke3 Kxh6 7.Kd4 Bh3
>8.Be2 Bg4 9.Bd3 Kxh5 10.Ke5 Bf5 11.Bc4
> ² (0.53) Depth: 18/31 00:00:04 5184kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Be4
>8.Bg4 Bf3 9.h3 Bg2
> ² (0.47) Depth: 19/32 00:00:08 10524kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Be4
>8.Bg4 Bf3 9.Be6 Bd5
> ² (0.47) Depth: 20/36 00:00:14 18107kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Kxh7 6.Bf5+ Kxh6 7.Kg3 Be4
>8.Bg4 Bf3 9.Be6 Bd5
> ² (0.47) Depth: 21/36 00:00:21 27709kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> ² (0.31) Depth: 22/37 00:00:43 55936kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> ² (0.31) Depth: 23/40 00:01:09 91041kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> ² (0.31) Depth: 24/40 00:01:49 143926kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> = (0.25) Depth: 25/80 00:05:25 422248kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> = (0.25) Depth: 26/59 00:07:47 614861kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> = (0.25) Depth: 27/80 00:12:52 1025475kN
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bxh3 4.Bg4 Bxg2+ 5.Kf2 Bh3 6.Be2 Kxh7 7.Bf3 Kxh6
>8.Kg3 Bg4 9.Bd5 Be6
> = (0.25) Depth: 28/76 00:25:15 2058045kN
>
>(Katz, Eatontown 29.12.2003)
>
>Now here is an interesting find…………….
>Yace Paderborn fully realizes that this position is DRAWN with a correct
>evaluation of = (0.00) in only 8 SECONDS !!! See below !!
>
>Analysis by Yace Paderborn:
>
>1...Kxh7
> +- (6.26) Depth: 1 00:00:00
>1...Kxh7
> +- (6.26) Depth: 1 00:00:00
>1...Kxh7 2.g4
> +- (6.53) Depth: 2 00:00:00
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Kxh7
> +- (6.48) Depth: 2 00:00:00
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Kxh7
> +- (6.48) Depth: 2 00:00:00
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Kxh7
> +- (6.48) Depth: 2 00:00:00
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Kxh7
> +- (6.48) Depth: 3 00:00:00
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Kxh7
> +- (6.48) Depth: 3 00:00:00
>1...Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Kxh7 4.g3 Bxh3+ 5.Kf2
> +- (6.05) Depth: 4 00:00:00
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1
> +- (4.05) Depth: 4 00:00:00
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Ke2
> +- (1.53) Depth: 4 00:00:00
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Ke2
> +- (1.53) Depth: 4 00:00:00
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Ke2 Bxg2
> +- (1.53) Depth: 5 00:00:00
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Ke2 Bxg2
> +- (1.53) Depth: 5 00:00:00
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.h3 Bxh3 7.Ke3
> ± (0.87) Depth: 6/11 00:00:00 6kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kd4 Kxh6
> ² (0.27) Depth: 6/14 00:00:01 11kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kd4 Kxh6
> ² (0.27) Depth: 6/15 00:00:01 12kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kd4 Kxh6
> ² (0.27) Depth: 7/15 00:00:01 28kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kd4 Kxh6
> ² (0.27) Depth: 7/17 00:00:01 33kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4
> ² (0.26) Depth: 8/19 00:00:01 66kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4
> ² (0.26) Depth: 8/19 00:00:01 71kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kf5 Kxh5
> = (0.21) Depth: 9/19 00:00:01 151kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kf5 Kxh5
> = (0.21) Depth: 9/21 00:00:02 170kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kf5 Kxh5
> = (0.20) Depth: 10/21 00:00:02 313kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kf5 Kxh5
> = (0.20) Depth: 10/23 00:00:02 335kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3
> = (0.19) Depth: 11/23 00:00:02 627kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3
> = (0.19) Depth: 11/25 00:00:02 686kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Kxh5 10.Kg3 Bf5
> = (0.16) Depth: 12/25 00:00:02 1187kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Kxh5 10.Kg3 Bf5
> = (0.16) Depth: 12/25 00:00:02 1267kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Bg2+ 10.Kg3 Kxh5 11.Kf2
> = (0.15) Depth: 13/25 00:00:02 2132kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Bg2+ 10.Kg3 Kxh5 11.Kf2
> = (0.15) Depth: 13/27 00:00:03 2321kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Bg2+ 10.Kg3 Kxh5 11.Kf2 Kxh4
> = (0.15) Depth: 14/27 00:00:03 3791kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Bg2+ 10.Kg3 Kxh5 11.Kf2 Kxh4
> = (0.15) Depth: 14/30 00:00:04 4043kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Bg2+ 10.Kg3 Kxh5 11.Kf2 Kxh4 12.Kg1 Kh3
> = (0.14) Depth: 15/31 00:00:05 6569kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bh3+ 9.Kf3 Bg2+ 10.Kg3 Kxh5 11.Kf2 Kxh4 12.Kg1 Kh3
> = (0.14) Depth: 15/31 00:00:06 7090kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.Kf2 Kxh4 11.Kf1 Kh3 12.Kg1 Bg2 13.Kf2 Kxh2
> = (0.00) Depth: 16/32 00:00:08 10803kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.Kf2 Kxh4 11.Kf1 Kh3 12.Kg1 Bg2 13.Kf2 Kxh2
> = (0.00) Depth: 16/32 00:00:10 11443kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.Kf2 Kxh4 11.Kf1 Kh3 12.Kg1 Bg2 13.Kf2 Kxh2
> = (0.00) Depth: 17/35 00:00:13 18031kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.Kf2 Kxh4 11.Kf1 Kh3 12.Kg1 Bg2 13.Kf2 Kxh2
> = (0.00) Depth: 17/35 00:00:15 19188kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 18/37 00:00:22 29555kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 18/37 00:00:24 31375kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 19/39 00:00:37 49034kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 19/39 00:00:40 52780kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 20/39 00:01:04 84144kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 20/41 00:01:11 91926kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 21/42 00:01:51 144876kN
>1...Ra1+ 2.Bd1 Rxd1+ 3.Rf1 Rxf1+ 4.Kxf1 Bxh3 5.Kf2 Bxg2 6.Ke3 Kxh7 7.Kf4 Kxh6
>8.Kg4 Bf3+ 9.Kg3 Kxh5 10.h3 Be4 11.Kf4 Bd5 12.Kf5 Bc6 13.Kf6 Bb7 14.Kf7 Ba8
>15.Kg7 Bb7 16.Kh7 Ba8 17.Kh8
> = (0.00) Depth: 21/42 00:02:05 161744kN
>
>(Katz, Eatontown 29.12.2003)
>
>Brian
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