Questions tagged [checkmate]

Questions relating to checkmating.

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7
votes
2answers
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 ...
2
votes
3answers
166 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 ...
7
votes
8answers
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....
3
votes
1answer
191 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+...
-1
votes
1answer
169 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?
1
vote
0answers
98 views

How often do GM-level classical games end in checkmate?

I understand that top-level games mostly end in draws or resignation, and presumably occasionally running out of time. What proportion of top level tournament games (in classical time controls) ...
11
votes
1answer
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 ...
4
votes
0answers
174 views

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

We know that a (absolutely) pinned piece can move and give a check, and the check can even be a mate. The following is an example for such a checkmate. [FEN "8/8/2k5/8/4p2b/r7/3RKPBr/q7 w - - 0 1&...
5
votes
1answer
187 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 ...
10
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1answer
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 ...
3
votes
2answers
804 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 ...
6
votes
3answers
468 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....
-4
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1answer
176 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 ...
2
votes
2answers
332 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 ...
8
votes
2answers
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?
2
votes
1answer
273 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 ...
1
vote
1answer
165 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 ...
0
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2answers
289 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 ...
-2
votes
3answers
6k views

Why is this position checkmate?

Why is this position checkmate? [FEN "2kr1bnr/1pQ5/p3pp2/2Pp2pp/3P4/3qPN1P/PP1N1PPB/5RK1 w - - 0 19"]
2
votes
1answer
134 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. ...
1
vote
1answer
94 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 ...
0
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2answers
128 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?
15
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2answers
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 ...
2
votes
0answers
61 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 ...
26
votes
6answers
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 ...
17
votes
3answers
5k 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. ...
0
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0answers
46 views

Can someone explain why this is checkmate for white? Can a king put another king into checkmate? [duplicate]

I am just learning to play chess so bear with me please :). I understand that the black king cannot move to d8 or f8 because of the white rook, nor d7 or f8 because of the white bishop. But why can it ...
13
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3answers
3k views

How is mate guaranteed - Bobby Fischer 134

I am working through Bobby Fischer Teaches Chess and #134 asks If White plays Rook-takes-Rook-check, can he mate? The answer is Yes, the mate is delivered by the white Queen. However, can't it be ...
1
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1answer
194 views

How is this position a checkmate?

In the photo below, it does not appear that I have the black king under attack. The next move that I made was my white queen to d8 and instantaneously I was told I had won by checkmate. How is this ...
5
votes
1answer
267 views

Is there really a checkmate after 1… Bxf5?

This puzzle on chesstempo caught my eye. We play as Black: [FEN "1r1r3k/7p/5Pb1/p2BpRpq/1pP5/1P1Q4/P5RP/7K w - - 0 1"] 1.Rgxg5 Note: the solution is not quite important here, so no large ...
4
votes
3answers
2k views

Is this an illegal chess move?

Can the White king move to g2 to checkmate? 8/8/8/8/4Q3/7k/5K2/8 w - - 0 1 1. Kg2
4
votes
2answers
292 views

A mate in two problem

[FEN "8/8/4R3/8/2kBn3/K2pQ3/8/8 w - - 0 1"] 1. Re5? With White to move, here is a mate in two problem that I couldn't figure out. My opinion is that the first move is 1. Re5, but Black ...
25
votes
3answers
4k views

On an infinite board, which pieces are needed to checkmate?

Most of the winnable endgames require cornering the opposing king to checkmate, often using zugzwang. However, if you have an infinite board (infinite in every direction), you won't be able to corner ...
1
vote
1answer
276 views

Chess engine does not go for checkmate

I have made a chess engine that can play a decent game of chess. Like a lot of engines it uses a minimax search algorithm with alpha-beta pruning. It uses this simple evaluation function to assign a ...
7
votes
2answers
955 views

Why was this stalemate?

I'm new to chess and I don't have much knowledge. But I was playing a game as Black, and I was up by a lot of material and played Nxc4 to capture White's last bishop. The game ended in a stalemate, ...
5
votes
1answer
177 views

Can you help me with this serieshelpmate problem?

I found a different kind of problem, a serieshelpmate. I'm trying to get better by thinking outside of the box and solving different types of puzzles. So I found this one but I'm kind of stuck. [FEN &...
5
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2answers
2k views

Unfinished Chess game between Viswanathan Anand and Garry Kasparov

I found many historic games unfinished. Take this match as an example. This is a match between Viswanathan Anand and Garry Kasparov in Ch World (match) (PCA) 1995. Anand lost this match as per the ...
-3
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4answers
2k views

Can someone tell me if this is a checkmate or stalemate?

[FEN "5rk/Q1p2p1p/4p1p/2Pq2b/3P2n/4P1Pb/PP1B1P1P/R2R2K w - - 0 1"] Apparently, the system says that it's checkmate, but I don't get it. Can someone please explain it?
0
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1answer
163 views

What is the fastest way to reach a position in which one side is forced to choose between checkmate and stalemate?

I had an interesting idea recently. While there are many proof games ending in checkmate or stalemate, why not both, I thought. So, thus I wondered, what is the fastest way to reach a position in ...
11
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3answers
2k views

How to solve this puzzle of Martin Gardner?

Martin Gardner mentioned the following "chess" problem in his column, Mathematical Games, for Scientific American (he got it from Smullyan, who learned about it from a high school math ...
9
votes
1answer
879 views

From Mate-in-3 to Mate-in-1

Here is my new problem in 3 steps - the key designates here the piece that moves first in the solution. An other way to reach a mate in one I hope you'll enjoy... [Title "From Mate in 3 to ...
14
votes
2answers
569 views

How many moves of head start does white need for a guaranteed win?

As we all know, it is not known whether white can always win in chess with optimal play. If, however, white got to make two moves before black made their first move would they be able to win with ...
23
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5answers
3k views

Another Unusual Mate in One

Here is another mate-in-one of my own i.e. a not quite usual one... [title "Mate in one"] [FEN "3b4/R3P3/2kPR1n1/P1p1n3/4K1p1/2Nr4/5p2/1b6 w KQkq - 0 1"] Imagine, you ...
7
votes
1answer
401 views

Mate in One the Missing King

The post "A mysterious mate in one" made me think of one of my last problems which is also a Mate-in-One with no black King: [Title "White to move and mate in one"] [FEN &...
5
votes
1answer
97 views

Using a check-preventing piece to protect the checkmating piece

Let's say that a piece is protecting my king from check, i.e. blocked or pinned. For example, my rook is in the way of my opponent's queen in checking my king. Can I checkmate their king with another ...
2
votes
2answers
132 views

A position with a choice between checkmate and perpetual check

For some odd reason I'm searching for a game, or rather a position, where one player can force a win via checkmate (can be check in n, where n is any number), but they can also force a draw via ...
4
votes
1answer
94 views

Where does the expression “checkmate” come from?

While watching The Queen's Gambit my partner asked me: why do they say "checkmate"? But she wanted to know what is the origin of this expression, not its meaning. And I realized I didn't ...
7
votes
1answer
408 views

Mate with both hands: Result?

Constructed case: In a tournament (LoC Tournament Rules apply, no rapid, no blitz) White plays d7-d8Q by placing the new Queen on d8 with the right hand and removing the pawn d7 with the left. White ...
17
votes
5answers
6k views

A position with the only legal move resulting in checkmate

Theoretically, is it possible that for some position, the only legal move for a side leads to a checkmate (that is, the opposite king gets checkmated)? If so, has this ever occurred in a real game?
2
votes
1answer
189 views

Checkmate with 3 bishops vs 1 bishop

I know that you can mate with two bishops, but I do not know whether it is possible if White has 3 bishops, and Black has 1 bishop. Is there a general method? If so, is it possible for White to ...

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