Questions tagged [checkmate]

Questions relating to checkmating.

Filter by
Sorted by
Tagged with
-1 votes
2 answers
57 views

Number of checkmate positions

How many different checkmate positions are there? A Super-Computer problem. Not with any conditions or hypothetical situations, just simply the number of checkmates that can be arrived at in a ...
user avatar
2 votes
2 answers
102 views

Most different mate-in-N depending on black's move

The puzzle (this may have a known answer) is to construct a position such that: If Black makes move A, it's mate in 1 for white. If Black makes move B, it's mate in 2 for white. ... If Black makes ...
user avatar
-2 votes
1 answer
123 views

Why does Stockfish miss mate in 5 with only two legal moves?

I'm interested to understand what is going on for Stockfish on Lichess here. There are only two legal moves for Black, and it gives the position mate-in-14 for white. When asked to play its ...
user avatar
2 votes
0 answers
89 views

I don't understand why this scenario is checkmate. The black rook cannot move, as it's protecting black king. Can someone explain? See photo [duplicate]

So in this scenario the White Queen put the black king in check, which was then blocked by the black rook. So, how is it that the black queen moving to the position of F1 is considered checkmate? The ...
user avatar
0 votes
0 answers
38 views

Was taking the King ever legal and when did it become illegal? [duplicate]

My sense from a Benjamin Franklin chess anecdote (he takes his opponent's king and says, In America, we take kings!) is that in the 1700s, taking a king if your opponent allowed it, was not illegal or ...
user avatar
  • 319
2 votes
1 answer
87 views

Testing Mate Possibility Without Use of King

I would like to be able to convince myself of the possibility (or lack thereof) of mate using various piece combinations in which the attacker doesn't use their own king. I'd like to approach this by ...
user avatar
  • 183
1 vote
1 answer
159 views

Why is this a Checkmate? Pawn can capture queen?

I am just learning Chess. Why is this a checkmate? It's Black's turn, and White's queen threatens Black's king, so check. But if I play gxf8, the check is gone. Why doesn't the game let me do it?
user avatar
2 votes
1 answer
200 views

Find a forced checkmate on dark squares only

In a recent Youtube video, the black player reaches the following position [White "NN"] [Black "Chess Simp"] [FEN "r2r4/ppp2p1k/2n4P/4p3/P3n3/B1P1P2P/P1qPK2P/R6R b - - 0 1&...
user avatar
2 votes
2 answers
192 views

Shortest game to "elegant" mate

Define an "elegant" checkmate as one in which the king is not on the edge of the board the king and each of the 8 squares surrounding it are each attacked by exactly one, different opponent ...
user avatar
2 votes
2 answers
152 views

Puzzle: Forced game end in at most two halfmoves

Compose a position where It's White to move White can deliver checkmate or stalemate in 1 move Or if they make a different move, then Black can deliver checkmate or stalemate in one 1 move I needed ...
user avatar
-5 votes
1 answer
103 views

How many moves to checkmate in the initial position with all Black pieces captured?

From the above position, black player lost (by mistakes) all of its pieces after his 15th move. How many more moves shall the black king have before it is checkmated by white if it is black' move?
user avatar
  • 325
22 votes
8 answers
10k views

Can a player in check win, by checkmating the opponent, while not getting themselves out of check?

Consider a player who is in check. Suppose they can make a move that would checkmate the opponent, but would not stop themselves from being in check. Would that be a legal move? For example, in the ...
user avatar
  • 245
0 votes
1 answer
144 views

What is the name of this mating motif?

Anyone know the name of this motif? I have seen it several times, but never knew the name. Source Polgar 5334 problems. Can one classify this as a Legal's trap motif due to the famous Queen sacrifice(...
user avatar
0 votes
2 answers
152 views

How do you remember mates with names?

I am working on the Yusupov series. In the first book he introduces Anastasia and Arabian among others. What I am a little uncertain about is the following issues. How do you remember them? How do ...
user avatar
1 vote
2 answers
88 views

Rules of Checkmate [duplicate]

I’ve attached a picture of the board configuration of an end game. Black wins this game by checkmate, however, I’m wondering how this is valid checkmate? To my understanding, checkmate occurs when a ...
user avatar
  • 29
0 votes
2 answers
109 views

What is the DTM for White is this 7 piece position?

I know that is winning for White because of the Syzygy tablebases. But Stockfish 14.1 NNUE, without tablebases, returns an evaluation of only +3.23 at depth =72(!). What is White's DTM? [FEN "8/...
user avatar
  • 297
12 votes
2 answers
316 views

Need Techniques for Bishop and Knight Checkmate

I understand the process for how to checkmate once in this position: [fen "7k/8/5K2/5B2/5N2/8/8/8 w - - 0 1"] But I need a technique for reliably getting into that kind of position from, ...
user avatar
2 votes
1 answer
463 views

What is the largest n such that discrete forced mate in one through mate in "n" through 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 ...
user avatar
  • 435
1 vote
1 answer
166 views

Average number of moves until checkmate for two players of unequal strenth

Suppose a game is played, until checkmate, between players of unequal strength, say 1800 vs 2800. What would be the average number of moves be for, say, 1000 games? I also ponder 2000 vs 2800 and 2200 ...
user avatar
-1 votes
2 answers
131 views

Could FIDE make a rule allowing for a visual announcement of check and checkmate?

Using verbal methods in announcing check and checkmate in tournaments is, for the arbiters, the players etc, unpleasant. But, on the other hand, prohibiting any means for an announcement is annoying ...
user avatar
  • 219
4 votes
2 answers
240 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 ...
user avatar
8 votes
4 answers
1k views

Strategy to win with a king and queen against a king and pawn about to promote?

I've been doing puzzles on a site and like to continue practicing against the computer. In many of the puzzles I end up with a situation like this where I was able to promote my black pawn to a queen ...
user avatar
-1 votes
2 answers
191 views

Why do people say you can't mate with just a bishop? [closed]

I mean, looks pretty checkmate to me. Everywhere I look this up, they never speak about the fact that it is at least theoretically possible to win with just a bishop and a king. Why is that? I mean ...
user avatar
  • 51
8 votes
2 answers
4k views

Why can white not mate in this position?

In the attached position, why can't white mate? Is it not possible to go Rxc6 and depending on blacks response go Rxc6. [FEN "4r1k1/1p3ppp/2b5/5n2/pp6/8/P4PPP/2R1R1K1 w - - 0 1"] Source: ...
user avatar
1 vote
2 answers
147 views

Is this king in checkmate?

Consider this chess board set up: Is the black king allowed to move to B4 or D4? The knight on C6 would put their white king in check if it moves. I haven't really read any rules about this so ...
user avatar
  • 51
0 votes
1 answer
128 views

The fastest dualed mates in n

Hauke Reddmann asked a cool question about the quickest dual-free mates in n's from the starting position. But this is a rather limited scope. I wish to attack this idea from a different angle. What ...
user avatar
7 votes
2 answers
2k views

Can there be a checkmate with maximum points of material (103) while covering 64 squares?

Is it possible to compose a game where these three conditions are simultaneously satisfied? No White piece is gone but every Black piece except the king is. All the white pawns are promoted to a ...
user avatar
  • 87
2 votes
3 answers
192 views

Is there a name for this mating pattern?

What's the name of the mating pattern starting with the move 21...Ng4!? [FEN ""] 1. d4 Nf6 2. Nc3 c5 3. d5 e6 4. e4 exd5 5. exd5 d6 6. Nf3 Be7 7. Bb5+ Nbd7 8. a4 O-O 9. O-O b6 10. Bc6 Rb8 ...
user avatar
  • 1,837
9 votes
8 answers
4k views

Would there be more decisive games if we began to see stalemates as checkmates? And hence more "interesting" chess? [closed]

I think it is up for debate as to whether a stalemate should be a win or a draw. I agree stalemates make beginner chess more interesting but we rarely see games at international level end in stalemate....
user avatar
  • 232
3 votes
1 answer
216 views

Longest forced win after 3 moves

It is possible to reach (exactly) #8 after just 3 moves: [Title "#8 after 3 moves"] [FEN ""] 1. e3 f6 2. Qf3 Kf7 3. Nh3 Qe8! 4. Ng5+ Kg6 5. Bd3+ Kxg5 6. Qf4+ Kh5 7. g4+ Kh4 8. Qg3+...
user avatar
  • 2,293
-1 votes
1 answer
183 views

Can there be a position in which a player blocks check with checkmate?

Let's say that the first player gives a check to the second. player. Then the second player blocks and gives a checkmate. Is it possible?
user avatar
11 votes
1 answer
4k views

Why can white not mate in this position from Bobby Fischer Teaches Chess (frame 73)?

[Event ""] [Site "https://www.apronus.com/chess/wbeditor.php"] [SetUp "1"] [FEN "6rk/p5p1/1q2Q3/3p4/6P1/8/2b2PK1/4R3 w - - 0 1"] I'm fairly new to anything ...
user avatar
10 votes
1 answer
419 views

Moving absolutely pinned piece to give checkmate: has this ever occured in a master game?

We know that an absolutely pinned piece (a piece pinned against its own king) can move and give a check, and the check can even be a mate. The following is an example of such a checkmate. [FEN "8/...
user avatar
4 votes
1 answer
219 views

Is KQB vs KP generally sufficient to force a selfmate?

User Hauke Reddmann noted in a previous answer that there should be a straightforward way to secure selfmate against a substantially weaker opponent (i.e., force them to checkmate you): win all the ...
user avatar
  • 2,070
10 votes
1 answer
2k views

Term for checkmate where every participating piece attacks exactly one square around king

I am looking for the term for a checkmate position which is an aesthetic feature for a chess composition. It is closely related to pure mate. I shall say that a piece (incl. pawn) participates in the ...
user avatar
2 votes
2 answers
883 views

Longest *shortest available* fixed sequence of moves leading to checkmate?

What is the longest fixed sequence of consecutive moves you can find in any legal position that guarantees checkmating the opponent regardless of their responses (whether by forcing particular ...
user avatar
  • 2,070
6 votes
3 answers
551 views

The quickest mate in n

Obviously inspired by the analogous selfmate question. (Helpmate would also be possible in principle, but looks a bit silly.) Thus, 1.f3 e5 2.g4 allows Black a #1, and 1.f3 e5 2.h3 a #2. 1.f4 e5 2....
user avatar
-3 votes
1 answer
191 views

How did I get a checkmate in this game?

This is a position from an endgame I played that I do not understand. How did I get a checkmate in this game? Is this a glitch? I ask this because I am pretty sure that Black's queen could take my ...
user avatar
  • 1
3 votes
2 answers
407 views

In chess.com analysis, why is a rook promotion better than a queen promotion?

I was analyzing a game on chess.com and it showed me that, in the below scenario, it is better to promote to a rook instead of promoting to a queen. It also shows that it has a mate in 6 with the ...
user avatar
7 votes
2 answers
1k views

Which of the pawns in front of the king should be moved in order to prevent a back-rank mate?

Assuming we're playing white and a bank rank mate is being threatened. Which one of the pawns (f, g, or h), in most cases, should be moved? Is there a general rule for this?
user avatar
3 votes
1 answer
306 views

What does an engine do if it has found the shortest mate?

For example, take this famous position from Kramnik vs. Deep Fritz, 2005: [FEN "5N1k/6p1/7p/4P3/pp2Q3/4q3/1P4PP/2b4K w - - 0 1"] Obviously White wins with Qh7#, and equally obviously, there ...
user avatar
  • 21.2k
3 votes
1 answer
243 views

Number of distinct checkmate positions

What is the number of distinct checkmate positions in each of the following categories given the following conditions? We are not interested in whether the position can be forced or not or even what ...
user avatar
0 votes
2 answers
309 views

Checkmate with only relevant pieces

What is the maximum number of black and white pieces which are relevant in a checkmate position (by White)? That is if any piece (black or white) was removed from the board, the checkmate would not be ...
user avatar
  • 325
-2 votes
3 answers
6k views

Why is this position checkmate?

Why is this position checkmate? [FEN "2kr1bnr/1pQ5/p3pp2/2Pp2pp/3P4/3qPN1P/PP1N1PPB/5RK1 w - - 0 19"]
user avatar
  • 61
2 votes
1 answer
151 views

What is the B+N checkmate position that leads to a longest mate?

Black is trying to avoid a mating net that forces it into the wrong corner. To build the mating net, the White king should cut the black king off the center first, by controlling the center itself. ...
user avatar
  • 473
0 votes
1 answer
147 views

A certain game with a knight promotion checkmate

I once remember (this happened 2-3 years ago) one of my friends showing me a game that was about 20 moves long. It was maybe a little longer, but it definitely ended in the middle game. It ended with ...
user avatar
  • 555
0 votes
2 answers
134 views

What was the best move for white? Could white have won?

Could white have won this game? What was the best move in this position for white? Or could Black have won?
user avatar
20 votes
2 answers
4k views

Is the position in this trick question reachable?

I found this trick question on r/Anarchy chess: White to move, mate in two. [FEN "2R2RK/6PP/5P/3PN/P/1pQ3p/n1p1qbp/5brk w - - 0 1"] [StartFlipped "1"] The trick is that But is ...
user avatar
  • 419
1 vote
0 answers
78 views

How do I proceed in this opening as black in BugHouse?

I play bughouse pretty often, but I often end up in the following position (as black). [FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Bxf7+ Kxf7 5. d3 Nf6 6. Ng5+ In normal chess, it's pretty ...
user avatar
27 votes
6 answers
12k views

Why is this a checkmate?

I'm new to chess and I'm confused about a puzzle I was practicing. As you can see my black queen has put the white king in check, but I'm confused how this is possible if a rook is right next to my ...
user avatar

1
2 3 4 5
7