time out, insufficient material
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hi, I recently had this position as white
8/8/8/8/7B/1b6/p3p3/K2k4 b - - 3 155
I only had a bishop in this final position and my opponent timed out before he could make a move and it said draw? I know for uscf and Fide rules would consider this a win for white because it is possible to check mate the black king with the pieces on the board. so why does it say draw for chess com?
From USCF:
14. The Drawn Game
14E. Insufficient material to win on time.The game is drawn even when a player exceeds the time limit if one of the following conditions exists as of the most recently determined legal move
14E1. Lone king.Opponent has only a lone king.
14E2. King and bishop or king and knight.Opponent has only king and bishop or king and knight, and does not have a forced win
From FIDE:
Article 5: The completion of the game
5.2 b. The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal moves. The game is said to end in a ‘dead position’. This immediately ends the game, provided that the move producing the position was legal.
Article 6: The chess clock
6.9 Except where one of the Articles: 5.1.a, 5.1.b, 5.2.a, 5.2.b, 5.2.c applies, if a player does
not complete the prescribed number of moves in the allotted time, the game is lost by
the player. However, the game is drawn, if the position is such that the opponent cannot checkmate the player’s king by any possible series of legal moves.
Article 9: The drawn game
9.6 The game is drawn when a position is reached from which a checkmate cannot occur by any possible series of legal moves. This immediately ends the game, provided that the move producing this position was legal.
2 days ago
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#3
TwayzHC wrote:
hi, I recently had this position as white 8/8/8/8/7B/1b6/p3p3/K2k4 b - - 3 155 I only had a bishop in this final position and my opponent timed out before he could make a move and it said draw? I know for uscf and Fide rules would consider this a win for white because it is possible to check mate the black king with the pieces on the board. so why does it say draw for chess com?
It wouldn't be a win under US Chess regulations. There's no forced mate. FIDE in the other hand, it would be.
The site uses a similar rule to US Chess, with sine edge cases where a forced mate on the board exists, but the algorithm only looks at material the side with time has.