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Subject: A difficult for computers test position

Author: Oreopoulos Kostas

Date: 02:42:14 01/07/04


[D] 8/5k2/3p2pp/2pPp1p1/1pP3P1/4K3/1PB5/8 w - - 0 1

This is an endgame position that occured in one of my games.
If white plays the correct move is Be4 blocking the e4 pawn and winning.
On any other move just e4 with a draw.

Is there any chess program that considers Be4 or e4 if it is black to move?

The idea is to move the king to c6 but if the e5 square is empty the black king
can walk in through e5.

Tiger 15 does not find it




00:00:00.0	0,42	1	81	b3
00:00:00.0	0,42	2	206	b3 h5
00:00:00.0	0,46	3	409	b3 h5 Bd1
00:00:00.0	0,54	3	810	Bd1 Ke7 Bf3
00:00:00.0	0,54	4	986	Bd1 Ke7 Bf3 Kf6
00:00:00.0	0,72	5	1827	Bd1 Ke7 Bf3 Kf7 b3
00:00:00.0	0,68	6	2437	Bd1 Ke7 Bf3 Kf7 b3 Kf6
00:00:00.0	0,86	7	3483	Bd1 Ke7 Bf3 Kf7 b3 Kf6 Ke4
00:00:00.0	0,86	8	4377	Bd1 Ke7 Bf3 Kf7 b3 Kf6 Ke4 Ke7
00:00:00.0	0,72	9	9407	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke7 Bf3
00:00:00.0	0,72	10	13603	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke7 Bf3 Kf6
00:00:00.0	0,72	11	18599	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke7 Bf3 Kf6 Be2
00:00:00.1	0,68	12	35964	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke7 Ke3 Kf6 Bd1 Ke7
00:00:00.1	0,68	13	61395	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke7 Ke3 Kf6 Bd1 Ke7 Bf3
00:00:00.2	0,68	14	98953	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke7 Ke3 Kf6 Bd1 Ke7 Bf3 Kf7
00:00:00.3	0,68	15	160988	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Bd1 Kf6
Bf3
00:00:00.4	0,68	16	258479	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Bd1 Kf6
Bf3 Ke7
00:00:00.7	0,68	17	415726	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Bd1 Kf6
Bf3 Ke7 Bd1
00:00:01.1	0,68	18	745537	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Bd1 Kf6
Bf3 Kf7 Be2 Kg7
00:00:01.8	0,68	19	1255854	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Bd1
Kf6 Bf3 Kf7 Be2 Kg7 Kd3
00:00:03.6	0,68	20	2447304	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7
00:00:09.2	0,68	21	6211950	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7
00:00:21.4	0,68	22	14435039	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7
00:00:54.6	0,68	23	39043060	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7
00:02:35.7	0,68	24	113842899	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7
00:07:10.8	0,68	25	323410203	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7
00:20:35.7	0,68	26	949651327	Bd1 Ke7 Kd3 Kf6 b3 Kf7 Be2 Ke8 Bf3 Kf7 Ke4 Ke7 Be2
Kf7 Bf3 Ke7 Be2 Kf7 Bf3 Ke7



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