Author: Jeremiah Penery
Date: 17:16:58 05/03/02
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On May 03, 2002 at 12:50:07, José Antônio Fabiano Mendes wrote: > Pawn ending === N.Grigoriev,1938 [test position] > [D]k7/8/1p6/p1p5/2P4K/8/PP6/8 w > Solution ==> 1. a4 Kb7 2. Kh5!! when White approaches using > corresponding squares which are as follows: > c6, c8 = g5 ; c7 = g6 ; d7 = f6 ; d8 = f5. > Source ==> "British Chess Magazine", October 1986, page 471 This position was also included in the "Brains of the Earth" challenge posed by GM Nunn, and posted here by (I believe) Frederick Friedel. Here are all the positions contained in that test: 6k1/6p1/8/4K1P1/8/7P/8/8 w - - bm Kf4; k7/4p3/4p3/8/8/3P1P2/5P2/K7 w - - bm Kb2; 8/4p3/2kp4/4p3/6K1/5P2/3P4/8 w - - bm Kg5; k7/8/1p6/p1p5/2P4K/8/PP6/8 w - - bm a4; 8/8/p7/8/1P6/7p/P4k1P/3K4 w - - bm a3; 8/5p1p/8/6k1/8/6P1/5PP1/7K w - - bm Kh2; The 6th one is by far the hardest. The winning sequence is 1. Kh2 f6 2. Kh1!! A full analysis can be found at http://members.aol.com/MuellerLamprecht/LoesungenBrainsoftheEarthengl.html
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