Hi, On 11/13/20 11:09, James Propp wrote:
Ordinary chess forbids moving into check (and hence from moving into checkmate), which means you automatically lose if there's no way to avoid moving into check.
Agreed, provided the king was in check in the first place (i.e. if the king is in check and cannot escape check by any moves, that side loses).
Is there a variant of chess in which you're not allowed to make a move that would cause you to lose 2 moves in the future?
Hmm. It seems the endgame of that (excuse the pun) is increasingly deep table bases. These are used in computer chess all the time, they improve play by sparing the computer program from having to calculate the correct outcome of e.g. two rooks vs queen and pawn. Did you look at e.g. the Syzygy and Lomonosov 7-man table bases? Andres.