Questions tagged [forced-move]
Questions with this tag can be about why a move is forced, or puzzles/compositions involving forced moves.
31 questions
20 votes
2 answers
5k views
2 votes
1 answer
142 views
How would this position be scored if you ran out of time here?
Here is the position (black has just played Qf8, the only legal move after White's Re8+): [FEN "2nKRq1k/6pp/8/3n4/6b1/8/8/8 w - - 0 1"] In this position white has a forced mate in one, in ...
- 416
4 votes
1 answer
354 views
Longest sequence of unique legal moves for one player, always in check and ending in checkmate
I recently played a bullet game, in which I thought I was in checkmate, but then realized I had one legal move, this then repeated again and again 6 times until ultimately I was in checkmate. I share ...
- 51
7 votes
1 answer
346 views
Do any unique proof games feature an en-passant capture?
Most positions that could be reached, in a specified number of moves, after an en passant capture could be reached just as well without one, suggesting that such positions could not occur in unique ...
- 1,192
2 votes
1 answer
177 views
Minimal forced checkmate
A forced checkmate is a situation in which the player whose turn it is has only legal moves which put the other player in checkmate. I’m searching for the minimal forced checkmate (the smallest amount ...
- 123
3 votes
5 answers
572 views
A special "dead" position
Construct a position which forcibly leads to White or Black being stalemated (and both events are actually possible), meaning that the position is already dead. Further (or it would be too easy) all ...
- 19k
2 votes
1 answer
605 views
What is the largest n such that discrete forced mate in one through mate in "n" exist?
This is admittedly a bit of an obscure question, so I apologize for the awkward wording of the question. To begin, assume you are playing as White, and that a "forcing move" is any move that ...
- 477
6 votes
2 answers
2k views
Why is this position a forced mate?
I was playing a game against one of the chess.com bots, as shown below (I was playing as white). On analysing the game afterwards, I'm aware I made a lot of mistakes, but the one I'm really confused ...
- 185
7 votes
2 answers
3k views
What is the longest possible forced checkmate sequence?
As title says. My question is about legal positions (positions which could be reached in actual games), but if there is a known solution with an illegal position to start the sequence, I'd be ...
- 181
24 votes
3 answers
5k views
Running out of time before playing a forced move that would draw the game
What happens if a player runs out of time before playing a forced move that would end in a draw? I suspect it is a loss, but it would be fair to be a draw. 7K/6P1/8/8/8/8/1k4p1/8 b - - 0 1 1... g1=Q ...
- 351
8 votes
1 answer
383 views
Is a both-sides forced perpetual check possible?
There are lots of positions where one side can force the other into a perpetual check. Is there any position in which there are no legal moves besides continuing the perpetual from both sides? For ...
3 votes
2 answers
394 views
What is the chess position with biggest X, where no matter what legal move black/white does, a specific player will be mated at a max X moves later?
There are positions where no matter what legal move black or white does during this sequence of moves, an specific player, will always be mated after X moves (sometimes earlier, but after X moves its ...
- 141
3 votes
1 answer
484 views
Longest sequence of forcing moves?
What is the longest fixed consecutive series of moves for one player such that the other player's response is forced every move? Assume draw rules must be obeyed (threefold repetition, 50-move rule, ...
- 2,289
1 vote
2 answers
965 views
An interesting positional chess riddle [duplicate]
I was thinking about a situation on a chessboard. You can call it a riddle, but I am not sure whether it is solvable or not. Let's say that there are more than 5 pieces for both Black and White, ...
- 1,120
20 votes
4 answers
6k views
Is there a double-forced mate position?
A usual forced mate position is where the winning player can play in a way that ensures checkmate, no matter what (legal) moves the opponent makes (unless the game ends due to a non-play reason, i.e. ...
- 465