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joshi tm: I think 11.dc it´s a ilegal move because any piece can go to square c6 and if white could play en-passant then the white pawn would go to c6. You suppose 11.dc is a legal move, then as consecuence black could play 11...bc and a black pawn could land in the square c6. c6 is closed until the end of the game so 11.dc it´s, in my opinion, a ilegal move.
(peida) Kui Sa tahad kindla mängutasemega vastast, siis võid uue partii loomisel määrata tema BKR vahemiku. Siis teised mängijad ei näe ega saa seda kutset vastu võtta. (Katechka) (näita kõiki vihjeid)