Funny position causing trouble for most engines

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rebel777

Funny position causing trouble for most engines

Post by rebel777 »

[d]4b1kn/3p1p1r/p2P1Ppr/p5Pp/p6P/p7/P7/7K w - -

No program I am aware of can produce a winning (+4.xx or so) score.

Mainline: 1. Kg2 Rg7 2. Kf3 Kh7 3. Ke4 Rg8 4. Kd5 Rf8 5. Kc5 Kg8 6. Kb6 Rh7 7. Kxa6 Rh6 8. Kxa5 Kh7 9. Kxa4 Rg8 10. Kxa3 Rg7 11. Kb4 Kg8 12. a4 Kh7 13. a5 Rg8 14. a6 Rf8 15. a7 Rg8 16. a8Q Rf8 17. Kb5 Kg8 18. Kb6 Rh7 19. Kc7 Rh6 20. Kd8 Rh7 21. Ke7 Rg7 22. Qa1 Rh7 23. Qd4 Rh6 24. gxh6 g5 25. h7+ Kxh7 26. Kxf8 Kg6 27. Kxe8 1-0

Even when the a-pawn finally has promoted most engines have great difficulties to find a winning score.

[d]Q3br1n/3p1p1k/3P1Ppr/6Pp/1K5P/8/8/8 w - -

Ed
Uri Blass
Posts: 11146
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Funny position causing trouble for most engines

Post by Uri Blass »

Movei produce a good score for white(not +4.xx so far but maybe I did not give it enough time)

I guess that superior mobility evaluation for extreme cases help movei to see things here.

Note that I did not work on movei in the last year and I use the free version of movei.

New game
4b1kn/3p1p1r/p2P1Ppr/p5Pp/p6P/p7/P7/7K w - - 0 1

Analysis by Movei00_8_438:

1.Kh1-g1
-+ (-9.16) Depth: 1 00:00:00
1.Kh1-g1
-+ (-9.46) Depth: 2 00:00:00
1.Kh1-g1
-+ (-10.16) Depth: 2 00:00:00
1.Kh1-g1 Kg8-f8
-+ (-9.24) Depth: 2 00:00:00
1.Kh1-g1 Kg8-f8
-+ (-9.24) Depth: 2 00:00:00
1.Kh1-g1 Kg8-f8 2.Kg1-g2
-+ (-9.23) Depth: 3 00:00:00
1.Kh1-g2
-+ (-9.22) Depth: 3 00:00:00
1.Kh1-g2 Kg8-f8 2.Kg2-g1
-+ (-9.22) Depth: 3 00:00:00
1.Kh1-g2 Kg8-f8 2.Kg2-g1
-+ (-9.22) Depth: 3 00:00:00
1.Kh1-g2 Kg8-f8 2.Kg2-g1 Kf8-g8
-+ (-8.98) Depth: 4 00:00:00
1.Kh1-g2 Kg8-f8 2.Kg2-g1 Kf8-g8
-+ (-8.98) Depth: 4 00:00:00
1.Kh1-g2
-+ (-8.68) Depth: 5 00:00:00
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2
-+ (-9.06) Depth: 5 00:00:00
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2
-+ (-9.06) Depth: 5 00:00:00
1.Kh1-g2
-+ (-8.76) Depth: 6 00:00:00
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.f6xg7 Kh7xg7 4.g5xh6+ Kg7xh6
-+ (-9.05) Depth: 6 00:00:00
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.f6xg7 Kh7xg7 4.g5xh6+ Kg7xh6
-+ (-9.05) Depth: 6 00:00:00 1kN
1.Kh1-g2 Rh7-g7 2.Kg2-f1 Kg8-h7 3.f6xg7 Kh7xg7 4.g5xh6+ Kg7xh6
-+ (-9.29) Depth: 7 00:00:00 1kN
1.Kh1-g2 Rh7-g7 2.Kg2-f1 Kg8-h7 3.f6xg7 Kh7xg7 4.g5xh6+ Kg7xh6
-+ (-9.29) Depth: 7 00:00:00 1kN
1.Kh1-g2 Rh7-g7 2.Kg2-f1 Rh6-h7 3.Kf1-f2 Kg8-f8 4.Kf2-e2
-+ (-9.36) Depth: 8 00:00:00 2kN
1.Kh1-g2 Rh7-g7 2.Kg2-f1 Rh6-h7 3.Kf1-f2 Kg8-f8 4.Kf2-e2
-+ (-9.36) Depth: 8 00:00:00 2kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2
-+ (-9.55) Depth: 9 00:00:00 3kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2
-+ (-9.55) Depth: 9 00:00:00 3kN
1.Kh1-g2
-+ (-9.25) Depth: 10 00:00:00 4kN
1.Kh1-g2
-+ (-8.55) Depth: 10 00:00:00 4kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-d2 Rg7-g8 5.Kd2-e2 Rh7-g7
-+ (-9.11) Depth: 10 00:00:00 6kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-d2 Rg7-g8 5.Kd2-e2 Rh7-g7
-+ (-9.11) Depth: 10 00:00:00 6kN
1.Kh1-g2
-+ (-8.81) Depth: 11 00:00:00 7kN
1.Kh1-g2
-+ (-8.11) Depth: 11 00:00:00 7kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-f2 Rh7-h6
-+ (-8.11) Depth: 11 00:00:00 8kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-f2 Rh7-h6
-+ (-8.11) Depth: 11 00:00:00 9kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-f2 Rg7-g8 5.Kf2-e2 Rh7-g7
-+ (-8.11) Depth: 12 00:00:00 11kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-f2 Rg7-g8 5.Kf2-e2 Rh7-g7
-+ (-8.11) Depth: 12 00:00:00 11kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-f2 Rh7-h6
-+ (-8.11) Depth: 13 00:00:00 17kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Rh6-h7 3.Kf2-e2 Kg8-f8 4.Ke2-f2 Rh7-h6
-+ (-8.11) Depth: 13 00:00:00 18kN
1.Kh1-g2
-+ (-8.41) Depth: 14 00:00:00 28kN
1.Kh1-g2
-+ (-7.81) Depth: 14 00:00:00 29kN
1.Kh1-g2
-+ (-7.81) Depth: 14 00:00:00 31kN
1.Kh1-g2
-+ (-8.11) Depth: 15 00:00:00 37kN
1.Kh1-g2
-+ (-8.81) Depth: 15 00:00:00 45kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-e2 Rg8-f8 5.Ke2-d2 Kh7-g8 6.Kd2-e2 Rh6-h7 7.Ke2-f2 Rh7-g7 8.Kf2-e2
-+ (-9.11) Depth: 15 00:00:00 53kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-e2 Rg8-f8 5.Ke2-d2 Kh7-g8 6.Kd2-e2 Rh6-h7 7.Ke2-f2 Rh7-g7 8.Kf2-e2
-+ (-9.11) Depth: 15 00:00:00 56kN
1.Kh1-g2
-+ (-9.41) Depth: 16 00:00:00 67kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-e2 Rg8-f8 5.Ke2-d2 Kh7-g8 6.Kd2-e2 Rh6-h7 7.Ke2-e3 Rh7-h6
-+ (-9.41) Depth: 16 00:00:00 75kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-e2 Rg8-f8 5.Ke2-d2 Kh7-g8 6.Kd2-e2 Rh6-h7 7.Ke2-e3 Rh7-h6
-+ (-9.41) Depth: 16 00:00:00 78kN
1.Kh1-g2
-+ (-9.11) Depth: 17 00:00:00 79kN
1.Kh1-g2
-+ (-8.41) Depth: 17 00:00:00 79kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.f6xg7 Kh7xg7
-+ (-7.11) Depth: 17 00:00:00 91kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.f6xg7 Kh7xg7
-+ (-7.11) Depth: 17 00:00:01 94kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.f6xg7 Kh7xg7
-+ (-7.11) Depth: 18 00:00:01 101kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.f6xg7 Kh7xg7
-+ (-7.11) Depth: 18 00:00:01 106kN
1.Kh1-g2
-+ (-7.41) Depth: 19 00:00:01 120kN
1.Kh1-g2
-+ (-8.11) Depth: 19 00:00:01 136kN
1.Kh1-g2
-+ (-6.81) Depth: 19 00:00:01 136kN
1.Kh1-g2
-+ (-6.81) Depth: 19 00:00:01 142kN
1.Kh1-g2
-+ (-6.51) Depth: 20 00:00:01 142kN
1.Kh1-g2
-+ (-5.81) Depth: 20 00:00:01 142kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 20 00:00:01 152kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 20 00:00:01 157kN
1.Kh1-g2
³ (-0.30) Depth: 21 00:00:01 175kN
1.Kh1-g2
µ (-1.00) Depth: 21 00:00:01 193kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 21 00:00:01 205kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 21 00:00:02 212kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8
= (0.00) Depth: 22 00:00:02 224kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8
= (0.00) Depth: 22 00:00:02 233kN
1.Kh1-g2
³ (-0.30) Depth: 23 00:00:02 261kN
1.Kh1-g2
µ (-1.00) Depth: 23 00:00:02 289kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 23 00:00:02 308kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 23 00:00:02 318kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 24 00:00:02 339kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 24 00:00:03 350kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 25 00:00:03 377kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 25 00:00:03 391kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 26 00:00:03 426kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 26 00:00:03 441kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 27 00:00:03 489kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 27 00:00:03 508kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 28 00:00:04 571kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 28 00:00:04 596kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 29 00:00:04 708kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 29 00:00:04 736kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 30 00:00:04 908kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6-a7 Rh7-g7 8.Ka7-b6 Kg8-h7 9.Kb6-a7 Rg7-g8 10.Ka7-b6 Rg8-g7
= (0.00) Depth: 30 00:00:04 943kN
1.Kh1-g2
² (0.30) Depth: 31 00:00:04 1905kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Rh6-h7 9.Ka5xa4 Rh7-g7 10.Ka4xa3 Kg8-h7
² (0.30) Depth: 31 00:00:04 2299kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Rh6-h7 9.Ka5xa4 Rh7-g7 10.Ka4xa3 Kg8-h7
² (0.30) Depth: 31 00:00:05 2348kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-g7 11.Ka3-b4 Kh7-g8 12.a2-a4 Kg8-f8 13.Kb4-a3 Rg7-g8 14.Ka3-b3
² (0.30) Depth: 32 00:00:05 2883kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-g7 11.Ka3-b4 Kh7-g8 12.a2-a4 Kg8-f8 13.Kb4-a3 Rg7-g8 14.Ka3-b3
² (0.30) Depth: 32 00:00:05 2953kN
1.Kh1-g2
² (0.60) Depth: 33 00:00:05 2963kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-g7 11.Ka3-b4 Rg7-g8 12.a2-a4 Rg8-f8 13.Kb4-a3 Kh7-g8 14.Ka3-b2
² (0.60) Depth: 33 00:00:07 4247kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-g7 11.Ka3-b4 Rg7-g8 12.a2-a4 Rg8-f8 13.Kb4-a3 Kh7-g8 14.Ka3-b2
² (0.60) Depth: 33 00:00:07 4360kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b4 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.Kb4-c3
² (0.60) Depth: 34 00:00:10 5923kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b4 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.Kb4-c3
² (0.60) Depth: 34 00:00:10 6101kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b4 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-h6 16.g5xh6 Kg8-h7
± (0.83) Depth: 35 00:00:16 9475kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b4 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-h6 16.g5xh6 Kg8-h7
± (0.83) Depth: 35 00:00:17 9829kN
1.Kh1-g2
± (1.13) Depth: 36 00:00:17 9872kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b4 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-h6 16.a7-a8Q Kg8-h7
+- (1.66) Depth: 36 00:01:02 29880kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b4 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-h6 16.a7-a8Q Kg8-h7
+- (1.66) Depth: 36 00:01:02 29992kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b3 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-g7 16.a7-a8Q Rg7-h7
+- (1.69) Depth: 37 00:02:08 59549kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b3 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-g7 16.a7-a8Q Rg7-h7
+- (1.69) Depth: 37 00:02:09 59766kN
1.Kh1-g2
+- (1.99) Depth: 38 00:02:09 59806kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b3 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-g7 16.a7-a8Q Rg7-h7
+- (2.06) Depth: 38 00:05:10 144239kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b3 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-g7 16.a7-a8Q Rg7-h7
+- (2.06) Depth: 38 00:05:11 144596kN
1.Kh1-g2
+- (2.36) Depth: 39 00:05:11 144687kN

(so k, 25.07.2009)
Uri Blass
Posts: 11146
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Funny position causing trouble for most engines

Post by Uri Blass »

Even at depth 40 movei does not see +4.xx score and
I do not plan to wait to depth 41 so I gave it to analyze the second position
when movei can easily see a winning score


New game
[d]Q3br1n/3p1p1k/3P1Ppr/6Pp/1K5P/8/8/8 w - - 0 1

Analysis by Movei00_8_438:

1.g5xh6
² (0.39) Depth: 1 00:00:00
1.g5xh6 Kh7xh6
² (0.39) Depth: 2 00:00:00
1.Qa8-e4
² (0.40) Depth: 2 00:00:00
1.Qa8-e4
² (0.69) Depth: 2 00:00:00
1.Qa8-e4 Rf8-g8 2.g5xh6 Kh7xh6
± (0.81) Depth: 2 00:00:00
1.Qa8-d5
± (0.82) Depth: 2 00:00:00
1.Qa8-d5 Rf8-g8 2.g5xh6 Kh7xh6
± (0.84) Depth: 2 00:00:00
1.Qa8-d5 Rf8-g8 2.g5xh6 Kh7xh6
± (0.84) Depth: 2 00:00:00
1.Qa8-d5 Rf8-g8 2.g5xh6 Kh7xh6 3.Qd5-g5+ Kh6-h7
± (0.97) Depth: 3 00:00:00
1.Qa8-e4
± (0.98) Depth: 3 00:00:00
1.Qa8-e4 Rf8-g8 2.g5xh6 Kh7xh6 3.Qe4-e3+ Kh6-h7
± (1.03) Depth: 3 00:00:00
1.Qa8-e4 Rf8-g8 2.g5xh6 Kh7xh6 3.Qe4-e3+ Kh6-h7
± (1.03) Depth: 3 00:00:00
1.Qa8-e4 Rf8-g8 2.g5xh6 Kh7xh6 3.Qe4-e3+ Kh6-h7
± (1.03) Depth: 4 00:00:00
1.Qa8-e4 Rf8-g8 2.g5xh6 Kh7xh6 3.Qe4-e3+ Kh6-h7
± (1.03) Depth: 4 00:00:00
1.Qa8-e4
± (1.33) Depth: 5 00:00:00
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e3
+- (1.77) Depth: 5 00:00:00
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e3
+- (1.77) Depth: 5 00:00:00
1.Qa8-e4
+- (2.07) Depth: 6 00:00:00 6kN
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e3 Rf8-g8
+- (2.24) Depth: 6 00:00:00 6kN
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e3 Rf8-g8
+- (2.24) Depth: 6 00:00:00 13kN
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e3 Rf8-g8 4.Kb4-c4
+- (2.27) Depth: 7 00:00:01 14kN
1.Qa8-a3
+- (2.28) Depth: 7 00:00:01 23kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Kg8-h7 3.Qa3-e3 Rf8-g8 4.g5xh6
+- (2.47) Depth: 7 00:00:01 24kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Kg8-h7 3.Qa3-e3 Rf8-g8 4.g5xh6
+- (2.47) Depth: 7 00:00:01 28kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Kg8-h7 3.Qa3-e3 Rf8-g8 4.g5xh6 Rg8-f8
+- (2.38) Depth: 8 00:00:01 31kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Kg8-h7 3.Qa3-e3 Rf8-g8 4.g5xh6 Rg8-f8
+- (2.38) Depth: 8 00:00:01 57kN
1.Qa8-a3 Kh7-g8 2.Qa3-b2 Kg8-h7 3.Qb2-c3 Rf8-g8 4.Qc3-e3 Rg8-f8 5.g5xh6
+- (2.19) Depth: 9 00:00:01 79kN
1.Qa8-a2
+- (2.20) Depth: 9 00:00:01 108kN
1.Qa8-a3 Kh7-g8 2.Qa3-b2 Kg8-h7 3.Qb2-c3 Rf8-g8 4.Qc3-e3 Rg8-f8 5.g5xh6
+- (2.19) Depth: 9 00:00:01 117kN
1.Qa8-e4
+- (2.20) Depth: 9 00:00:01 122kN
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e7 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Kb4-c4
+- (2.29) Depth: 9 00:00:01 127kN
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e7 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Kb4-c4
+- (2.29) Depth: 9 00:00:01 150kN
1.Qa8-e4 Kh7-g8 2.g5xh6 Kg8-h7 3.Qe4-e3 g6-g5 4.h4xg5 Nh8-g6 5.Qe3-e4 Kh7-g8
+- (2.19) Depth: 10 00:00:01 169kN
1.Qa8-a3
+- (2.20) Depth: 10 00:00:01 187kN
1.Qa8-a3 Kh7-g8 2.Qa3-c3 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qc3-e3 Rg8-f8 5.g5xh6 Rf8-g8
+- (2.46) Depth: 10 00:00:01 205kN
1.Qa8-a3 Kh7-g8 2.Qa3-c3 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qc3-e3 Rg8-f8 5.g5xh6 Rf8-g8
+- (2.46) Depth: 10 00:00:02 276kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Rh6-h7 3.Qa3-e3 Rh7-g7 4.Qe3-c3 Rg7-h7
+- (2.45) Depth: 11 00:00:02 355kN
1.Qa8-e4
+- (2.46) Depth: 11 00:00:03 366kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Rh6-h7 3.Qa3-e3 Rh7-g7 4.Qe3-c3 Rg7-h7
+- (2.45) Depth: 11 00:00:03 405kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Rh6-h7 3.Qa3-e3 Rh7-g7 4.Qe3-c3 Rg7-h7
+- (2.45) Depth: 11 00:00:03 593kN
1.Qa8-a3 Kh7-g8 2.Kb4-c4 Rh6-h7 3.Qa3-e3 Rh7-h6 4.Qe3-e5 Kg8-h7 5.Kc4-c3
+- (2.45) Depth: 12 00:00:04 688kN
1.Qa8-e4
+- (2.46) Depth: 12 00:00:04 706kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e4
+- (2.46) Depth: 12 00:00:04 802kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e4
+- (2.46) Depth: 12 00:00:05 1040kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Kc3-c4 Kh7-g8 6.Qe3-a3
+- (2.45) Depth: 13 00:00:05 1223kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Kc3-c4 Kh7-g8 6.Qe3-a3
+- (2.45) Depth: 13 00:00:06 1811kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-c3 Kh7-g8 6.g5xh6 Kg8-h7
+- (2.40) Depth: 14 00:00:06 2154kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-c3 Kh7-g8 6.g5xh6 Kg8-h7
+- (2.40) Depth: 14 00:00:07 2984kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-c3
+- (2.40) Depth: 15 00:00:07 3086kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-c3
+- (2.40) Depth: 15 00:00:08 3938kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-c3
+- (2.40) Depth: 16 00:00:08 4046kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c4 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-c3
+- (2.40) Depth: 16 00:00:09 5286kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3 Kh7-g8 6.Qh3-h2 Kg8-h7 7.Qh2-g1 Kh7-g8 8.Qg1-c5
+- (2.40) Depth: 17 00:00:09 5969kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3 Kh7-g8 6.Qh3-h2 Kg8-h7 7.Qh2-g1 Kh7-g8 8.Qg1-c5
+- (2.40) Depth: 17 00:00:11 7979kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3 Kh7-g8 6.Kc3-c4 Kg8-h7 7.Qh3-e3 Kh7-g8 8.g5xh6 Kg8-h7 9.Kc4-d5 Rf8-g8
+- (2.39) Depth: 18 00:00:13 10227kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3 Kh7-g8 6.Kc3-c4 Kg8-h7 7.Qh3-e3 Kh7-g8 8.g5xh6 Kg8-h7 9.Kc4-d5 Rf8-g8
+- (2.39) Depth: 18 00:00:18 13755kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3
+- (2.39) Depth: 19 00:00:18 14172kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3
+- (2.39) Depth: 19 00:00:24 18015kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3
+- (2.39) Depth: 20 00:00:24 18336kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3
+- (2.39) Depth: 20 00:00:33 23337kN
1.Qa8-e4 Kh7-g8 2.Qe4-e7 Kg8-h7 3.Kb4-c3 Rf8-g8 4.Qe7-e3 Rg8-f8 5.Qe3-h3
+- (2.39) Depth: 21 00:00:34 24076kN
1.Kb4-a5
+- (2.40) Depth: 21 00:00:48 32279kN
1.Kb4-a5
+- (2.69) Depth: 21 00:00:48 32373kN
1.Kb4-a5 Kh7-g8 2.Ka5-b6 Kg8-h7
+- (7.62) Depth: 21 00:00:52 34646kN
1.Kb4-a5 Kh7-g8 2.Ka5-b6 Kg8-h7
+- (7.62) Depth: 21 00:00:54 35477kN
1.Kb4-a5 Kh7-g8 2.Ka5-b6 Kg8-h7 3.Qa8-e4 Kh7-g8 4.Qe4-e7 Rh6-h7 5.Kb6-c7 Rh7-g7 6.Qe7-e5 Rg7-h7 7.Kc7-d8 Rh7-h6 8.Qe5xe8
+- (7.90) Depth: 22 00:00:57 37513kN
1.Kb4-a5 Kh7-g8 2.Ka5-b6 Kg8-h7 3.Qa8-e4 Kh7-g8 4.Qe4-e7 Rh6-h7 5.Kb6-c7 Rh7-g7 6.Qe7-e5 Rg7-h7 7.Kc7-d8 Rh7-h6 8.Qe5xe8
+- (7.90) Depth: 22 00:01:09 44140kN
1.Kb4-a5 Kh7-g8 2.Ka5-b6 Kg8-h7 3.Qa8-e4 Kh7-g8 4.Qe4-e7 Rh6-h7 5.Kb6-c7 Rh7-g7 6.Qe7-e5 Rg7-h7 7.Kc7-d8 Rh7-h6 8.Qe5xe8
+- (7.90) Depth: 23 00:01:14 46858kN
1.Kb4-a5 Kh7-g8 2.Ka5-b6 Kg8-h7 3.Qa8-e4 Kh7-g8 4.Qe4-e7 Rh6-h7 5.Kb6-c7 Rh7-g7 6.Qe7-e5 Rg7-h7 7.Kc7-d8 Rh7-h6 8.Qe5xe8
+- (7.90) Depth: 23 00:01:25 54307kN
1.Kb4-a5
+- (8.20) Depth: 24 00:01:26 55160kN

(so k, 25.07.2009)


analysis of the first position at depth 39 and depth 40 that I did not post

1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b3 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-g7 16.a7-a8Q Rg7-h7
+- (2.36) Depth: 39 00:12:14 333423kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b3 Kh7-g8 12.a2-a4 Rh6-h7 13.a4-a5 Rh7-g7 14.a5-a6 Rg7-h7 15.a6-a7 Rh7-g7 16.a7-a8Q Rg7-h7
+- (2.36) Depth: 39 00:12:15 334328kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b2 Rf8-g8 12.a2-a3 Rg8-f8 13.a3-a4 Kh7-g8 14.a4-a5 Rh6-h7 15.a5-a6 Rh7-g7 16.a6-a7 Rg7-h7
+- (2.39) Depth: 40 00:27:30 718392kN
1.Kh1-g2 Rh7-g7 2.Kg2-f2 Kg8-h7 3.Kf2-e3 Rg7-g8 4.Ke3-d4 Rg8-f8 5.Kd4-c5 Kh7-g8 6.Kc5-b6 Rh6-h7 7.Kb6xa6 Rh7-h6 8.Ka6xa5 Kg8-h7 9.Ka5xa4 Rf8-g8 10.Ka4xa3 Rg8-f8 11.Ka3-b2 Rf8-g8 12.a2-a3 Rg8-f8 13.a3-a4 Kh7-g8 14.a4-a5 Rh6-h7 15.a5-a6 Rh7-g7 16.a6-a7 Rg7-h7
+- (2.39) Depth: 40 00:27:34 720250kN

(so k, 25.07.2009)
Uri Blass
Posts: 11146
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Funny position causing trouble for most engines

Post by Uri Blass »

I forgot to add that probably one of the reasons that movei is strong in this position is not using null move pruning when the opponent has a small number of moves.

It means specifically that movei is not going to prune moves for white by null move pruning when black has 2 or 3 legal moves(based on my memory the minimal number of moves to allow using null move pruning is 10).