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Subject: Testposition Fritz-Kramnik (blocking detection)

Author: Joachim Rang

Date: 10:11:04 10/04/02


If Fritz chooses another line (24.f4 or 25.f4) such a position might have occur:

[D] 8/2b2k2/1pp1pPp1/p1p1P3/P1P1KBP1/1P6/8/8 w - - 0 33

this is also a draw, because there is no way to break in the black position.
Nevertheless most engines evaluates this with a clear advantage for white (more
than + 1 pawn ). Which engine detects that it is actually a draw?

Joachim

P.S.: I think the game was a draw, after the rook exchange in move 23. Below are
some lines, which all lead to the abovr drawn position.


Deep Fritz - Kramnik (2800) [C67]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.0-0 Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+
Kxd8 9.Nc3 h6 10.b3 Ke8 11.Bb2 Be7 12.Rad1 a5 13.a4 h5 14.Ne2 Be6 15.c4 Rd8
16.h3 b6 17.Nfd4 Nxd4 18.Nxd4 c5 19.Nxe6 fxe6 20.Rxd8+ Kxd8 21.Bc1 Kc8 22.Rd1
Rd8 23.Rxd8+ Kxd8 24.g4 [24.f4 Ke8 25.Kf2 g6 26.Ke3 Kf7 27.g4 hxg4 28.hxg4 Bd8
29.Ke4 Be7 30.f5 Bd8 31.f6 c6 32.Bf4 Bc7=] 24...g6 [24...hxg4 25.hxg4 Ke8 26.Kg2
Kf7 27.Kf3 g6 28.Ke4 Bd8 29.f4 Be7 30.f5 Bd8 31.f6 c6 32.Be3 Bc7 33.Bg5 Bd8
34.Bd2 Bc7 35.Kf4 Bd8 36.Kg5 Bc7=] 25.h4 [25.f4 hxg4 26.hxg4 Ke8 27.Kf2 Kf7
28.Kf3 c6 29.Ke4 Bd8 30.f5 Be7 31.f6 Bd8 32.Be3 Bc7=] 25...hxg4 26.Bg5 Bxg5
27.hxg5 Ke8 28.Kg2 ½-½




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