Author: Brian Katz
Date: 08:09:51 12/29/03
[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
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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