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Only legal move forces a draw and lichess says it is not draw



The end position should be a draw, the only legal move for white leads to king vs king, that is a bug from lichess.
www.fide.com/fide/handbook.html?id=171&view=article

article 5.2b:
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 in accordance with Article 3 and Articles 4.2 – 4.7.
Had Black timed out, then yes, this would be a draw--as White would have no way to win.

However, White timed out instead, and since Black (with the pieces on the board at the time) could have won (as K+Q v K is a win), this counts as a loss instead.
@Nel_S Incorrect, from that particular position black has no legal way to win the game. White MUST move, and white has 1 legal move to take the queen then it's king vs king draw. It's a draw. It should not matter who times out here. Black has no way to continue from this position with white to move and win. (Illegal for black to be to move in this position as white is in check) It's a draw.
Interesting thought, but I doubt developers will do anything about it. Placing checks to flag your opponent is a major part of bullet, and if you don't want timeouts like that, play a longer time control. It is not a draw. @lurarose @eulerian
This is an interesting post! Indeed, in that position, if it's white to move, the game is already drawn after 66...Qg4+, without a real need to play the only legal, game-ending move 67. Kxg4. Whether the game is drawn according to FIDE rules after 66...Qg4+ or 67. Kxg4, I'm not sure.

The issue here is the FIDE article 5.2b might not consider whether it's white or black to play, as if you take the same position, but make it black to play, then it becomes a mate in 2 for black. Of course, such a position with black to move is not reachable through legal play of standard chess, but if we ignore that and just consider it as starting from a position, the position is only drawn if white is to move.

Thus it appears that at least Lichess, though perhaps also FIDE, I'm not sure, only declares a game a draw, if it's drawn regardless of who is to move (in this case, after 67. Kxg4 when only the kings are left). This is the only explanation I could come up with. If anyone knows the FIDE rules better, I would love to hear about this particular issue!

But, of course, even if FIDE rules do say it's only officially a draw after 67. Kxg4, that doesn't mean that Lichess has to necessarily follow them to a tee, it might have very well just been easier to program it this way. :)
"But, of course, even if FIDE rules do say it's only officially a draw after 67. Kxg4, that doesn't mean that Lichess has to necessarily follow them to a tee, it might have very well just been easier to program it this way. :)"

Sure, but it is a bug, it is against FIDE rules.
FIDE = draw

Online chess: although this is rather a simple example it is not easy to determine such cases. Even complicated ones are conceivable and one cannot code it properly or it might take too much time.

So, get over it! ;)

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