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Subject: BELCT 2001 discussion of the game zarkov-yace

Author: Uri Blass

Date: 12:53:32 10/05/01


I think that yace blundered by 20...Bd7

Here is Deep Fritz's analysis
Deep Fritz needs some hours on p800 to avoid 20...Bd7

I suspect that only material evaluation can find that 20...Bd7 is losing a pawn
when 20...h6 and it may be interesting to see if I am right.


Zarkov4.5T - Yace
[D]1nr1rbk1/qp3ppp/4b3/pQ1pPpB1/N2P4/P1R2N2/1P3PPP/4R1K1 b - - 0 1

Analysis by Deep Fritz:

20...Rxc3--
    (0.59)   Depth: 1/5   00:00:00
20...Rxc3--
    (0.59)   Depth: 1/5   00:00:00
20...Nc6!
  =  (0.25)   Depth: 1/6   00:00:00
20...Nc6 21.Nc5 Bxc5
    (0.53)   Depth: 2/10   00:00:00
20...Qa6!
    (0.50)   Depth: 2/10   00:00:00
20...Qa6! 21.Qb3
    (0.28)   Depth: 2/10   00:00:00
20...Qa6 21.Qxa6 Nxa6 22.Rec1
    (0.47)   Depth: 3/13   00:00:00  1kN
20...Bd7!
    (0.44)   Depth: 3/15   00:00:00  3kN
20...Bd7 21.Qb6 Qa6 22.Rxc8 Rxc8
    (0.53)   Depth: 4/16   00:00:00  4kN
20...Qa6!
    (0.50)   Depth: 4/16   00:00:00  5kN
20...Qa6! 21.Qxa6 Nxa6 22.Rxc8 Rxc8 23.Nc3
    (0.37)   Depth: 4/16   00:00:00  5kN
20...Qa6 21.Qxa6 Nxa6 22.Rec1 b5 23.Nb6 Rxc3
    (0.44)   Depth: 5/17   00:00:00  13kN
20...h6!
    (0.41)   Depth: 5/18   00:00:00  23kN
20...h6 21.Rxc8 Rxc8 22.Nb6 Rc6 23.Bd8 Qa6
    (0.47)   Depth: 6/28   00:00:00  52kN
20...h6 21.Bd2 Bd7 22.Qb6 Qa6 23.Qxa6
    (0.50)   Depth: 7/23   00:00:00  170kN
20...h6 21.Bd2 Bd7 22.Qb3 Be6 23.Rxc8 Rxc8 24.Nb6 Rd8
    (0.62)   Depth: 8/24   00:00:00  352kN
20...Qa6!
    (0.59)   Depth: 8/24   00:00:00  403kN
20...Qa6! 21.Qxa6 Nxa6 22.Rec1 b5 23.Rxc8 Rxc8 24.Rxc8 Bxc8 25.Nc3 h6
    (0.50)   Depth: 8/24   00:00:00  478kN
20...Qa6 21.Rb3 h6 22.Be3 Nc6 23.Qxb7 Qc4 24.Nc3 a4
    (0.72)   Depth: 9/24   00:00:01  974kN
20...Nd7!
    (0.69)   Depth: 9/25   00:00:02  1277kN
20...Bd7!
    (0.66)   Depth: 9/26   00:00:03  1870kN
20...Bd7! 21.Qb3 Rc4 22.Rxc4 dxc4 23.Qb6 Qa6 24.Qxa6 Nxa6 25.Nc3 b5
    (0.56)   Depth: 9/26   00:00:03  2054kN
20...Bd7 21.Qb3 Rc4 22.Rxc4 dxc4 23.Qb6 Qa8 24.Nc5 Bc6 25.Re3 Bxf3 26.Rxf3
    (0.50)   Depth: 10/29   00:00:04  2871kN
20...Bd7 21.Qb3 Qa6 22.Nc5 Bxc5 23.dxc5 Be6 24.Nd4 Nc6 25.Nxe6 fxe6 26.Rd3
    (0.59)   Depth: 11/32   00:00:10  6864kN
20...Bd7 21.Qxd5 Bc6 22.Qb3 b5 23.Nc5 Bxf3 24.Rxf3 Nc6 25.Be3 Nxd4 26.Bxd4
    (0.66)   Depth: 12/32   00:00:28  18999kN
20...Bd7 21.Qxd5 Bc6 22.Qb3 b5 23.Nc5 Bxf3 24.Rxf3 Nc6 25.Be3 Nxd4 26.Bxd4
    (0.66)   Depth: 13/35   00:01:01  40995kN
20...h6!
    (0.62)   Depth: 13/35   00:01:28  59841kN
20...h6! 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rec1 Be7 24.R3c2 f6 25.Rxc6
    (0.59)   Depth: 13/35   00:01:52  75849kN
20...h6 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rec1 Be7 24.R3c2 g5 25.Bc3 f6
    (0.56)   Depth: 14/34   00:02:41  109374kN
20...Bd7!
    (0.53)   Depth: 14/35   00:03:10  129417kN
20...Bd7! 21.Qb3 b5 22.Nc5 Bxc5 23.dxc5 Rxc5 24.Rxc5 Qxc5 25.Rc1 Qb6 26.Qxd5
    (0.41)   Depth: 14/35   00:04:08  168720kN
20...Bd7 21.Qxd5 Bc6 22.Qb3 b5 23.Nc5 Bxf3 24.Rxf3 Nc6 25.Be3 Bxc5 26.dxc5
    (0.28)   Depth: 15/37   00:07:08  294927kN
20...Bd7 21.Qxd5 Bc6 22.Qa2 Bxf3 23.gxf3 Rxc3 24.Nxc3 Qb6 25.Be3 Qg6+ 26.Kh1
    (0.44)   Depth: 16/39   00:13:05  542443kN
20...Bd7 21.Qxd5 Bc6 22.Qa2 h6 23.Bf4 Bxa4 24.e6 b6 25.Ne5 Kh7 26.exf7
    (0.37)   Depth: 17/42   00:34:00  1420098kN
20...Bd7 21.Qxd5 Bc6 22.Qa2 Bxf3 23.gxf3 Rxc3 24.Nxc3 Qb6 25.f4 h6 26.Bh4
    (0.59)   Depth: 18/44   01:26:06  3588096kN
20...h6!
    (0.56)   Depth: 18/44   02:05:05  5262224kN
20...h6! 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rc2 Be7 24.Rec1 g5 25.Rxc6 bxc6 26.Rxc6
    (0.47)   Depth: 18/45   02:52:24  7200745kN
20...h6 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rc2 Be7 24.Re2 g5 25.Bc3 g4 26.Ne1
    (0.41)   Depth: 19/47   04:35:33  11558802kN
20...h6 21.Bd2 Nc6 22.Nb6 Rcd8 23.Rc2 Be7 24.Re2 Kh8 25.Rc1 Kg8 26.Ree1
    (0.37)   Depth: 20/47   10:42:26  27035846kN

Uri



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