Questions tagged [checkmate]

Questions relating to checkmating.

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6
votes
5answers
2k views

Is this position a forced win for Black after move 14?

In this Lichess game, [FEN ""] 1.c4 e5 2.e4 d6 3.Nc3 Be6 4.Nf3 Nc6 5. d4 exd4 6.Nxd4 Nxd4 7.Qxd4 c5 8.Qd3 g6 9. Be2 Bg7 10.O-O Nh6 11.Re1 Ng4 12.Bxg4 Bxg4 13.e5 Bxe5 14.Nd5 Qh4 15. Nc7+ Kd7 16. ...
15
votes
4answers
4k views

How many different ways are there to checkmate in the early game?

We all know the shortest possible checkmate is 4 ply: f3 e5 g4 Qh5# This isn't the only possible move order. In fact, there are 8, depending on whether white moves the f or g pawn first, whether he ...
3
votes
1answer
293 views

Is it still back-rank mate when there aren't friendly pieces blocking?

The definition of the back rank mate is: A Back-Rank Mate is a checkmate delivered by a rook or queen along the back rank in which the mated king is unable to move up the board because the ...
7
votes
3answers
795 views

Can it be useful for a player block with a hanging piece in a back rank mate situation?

Could the following situation possibly exist? It's White to play, and Black is about to get back rank mated. This is because the King's mobility is restricted to a single file. Then White gives a ...
1
vote
1answer
180 views

Is there a name attributed to this type of checkmate pattern?

I was going over an old lichess.com game when I realized that the checkmating pattern seemed familiar. [FEN "5rk1/p4pp1/1p5p/2p4Q/2P3R1/P4q2/6RP/4r2K w - - 0 1"] Here it is boiled down, ...
9
votes
1answer
1k views

What is a pure checkmate?

Recently I heard something about pure checkmate. This is a special kind of checkmate where each of the squares around the king has to be covered by just one single piece. One simple example of this ...
1
vote
1answer
159 views

Is black in check? [duplicate]

I know this sounds like a really basic question, but I couldn't find it anywhere on the site... On the following board, is the black king actually in check (assuming it's his move)? My thoughts are ...
4
votes
2answers
251 views

Does this knight and rook mating pattern have a name, or has it occurred before?

[fen "5k2/8/1R6/5r2/P7/1P4P1/6KP/5n2 b - - 0 40"] With black to move, remarkably it's mate in 2 (at first glance, it looks like black may struggle to even draw). It occurred in a recent LiChess game ...
-4
votes
1answer
181 views

What is the total number of KNN vs K checkmate positions?

What is the total number of KNN vs. K checkmate positions? Assume that White is checkmating. Firstly the Black king must be mated on a corner. It is impossible to do it on the edge. The calculations ...
0
votes
1answer
160 views

Why do people make a huge pause before making even a simple checkmate? [closed]

Are they already so happy about the victory or is this behavior of the cheat program? I don’t believe in what they think over the simplest move.
5
votes
3answers
980 views

A position in which checkmate is forced (obligatory)

I am looking for a position in which all possible moves are checkmate. This means, that if the player does not want to checkmate the opponent, because for example he feels sorry for him, even in that ...
7
votes
5answers
632 views

When exactly does a checkmate or stalemate take effect?

I'm not enthusiastic about chess in particular, so if I use terminology incorrectly please correct me. I use "phase 1 & phase 2" for each player's move, and "turn n" for each pair of phases. I'm ...
7
votes
1answer
322 views

Would certain checkmates be possible if the king could move into check?

Similar to a previous question of mine, let's suppose there's a piece that moves like the king, but isn't restricted from moving into check. While a normal king and two knights can't force checkmate, ...
1
vote
2answers
289 views

What are the fastest horizontal checkmates for both castlings?

Horizontal: wherein the rook attacks down a rank. I wish to know the fastest possible castling checkmates, for both queenside and kingside, that are a horizontal one See my question about vertical ...
2
votes
3answers
313 views

What are the fastest vertical checkmates for both castlings?

Vertical: wherein the rook attacks down a file. I wish to know the fastest possible castling checkmates, for both queenside and kingside, that are a vertical one. See my question about horizontal ...
4
votes
2answers
311 views

What should be defined as an en passant checkmate?

Is there a general consensus among composers, players, and/or organizations for what exactly defines an en passant checkmate, and is there any history to it? As far as I know, there are two ...
4
votes
3answers
462 views

Is an Arabian mate possible without the king’s help?

Can an Arabian mate be enforced without the king's help in this position? [FEN "r6k/8/8/8/8/8/8/K6n w - - 0 1"]
1
vote
3answers
360 views

What are the quckest helpmates delivered by the rook, knight, bishop, and pawn?

What are the quickest helpmates, which is where both sides help administer checkmate to one side, delivered by the rook, knight, bishop, and pawn? The said piece has to deliver the checkmate on the ...
1
vote
1answer
186 views

App Mis-calculated Checkmate?

How is this checkmate? The King isn't even in check! Am I missing something, or did the chess app goof up?
4
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2answers
364 views

Black only has pawns: Mate in what?

In a standard opening position in chess, imagine that all Black pieces are removed except for the king and pawns. [FEN "4k3/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1"] What is the ...
3
votes
2answers
204 views

Finding a mating net in a RRN vs RRN endgame

This question relates to a game I played on LiChess (link), from which we have the following position: [FEN "8/2rn4/2pN2k1/r1Pp2p1/p2P4/3KPP2/R7/7R w - - 4 42"] In this position with white to move, ...
6
votes
1answer
379 views

What is the longest professional chess game that ended in a checkmate?

Quite simply, what is the longest professional chess game that ended in a checkmate?
1
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2answers
263 views

How many two move checkmates exist?

I am well aware that Fool's Mate exists. But how many two move checkmates exist in total?
0
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1answer
308 views

What is the fastest possible checkmate? [duplicate]

What is the fastest/shortest possible checkmate? What is the minimum amount of moves to checkmate a side?
0
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2answers
167 views

Why queen traps happen so frequently? [closed]

I am aware that in most chess games the king is the one to be checkmated. Yet when playing many online chess games I have found the queen is the the one being checkmated. Is this simply another ...
0
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2answers
670 views

Why isn't the objective of chess to capture the opponent's king? [duplicate]

The objective of chess is to put the opponent's king in a position where it cannot evade capture. Why not go all the way? Short of tremendous blunders of moving into check, chess would be completely ...
8
votes
6answers
2k views

At what playing strength level should one be able to mate with King Bishop and Knight vs King?

As in title above, at what playing strength level should one be able to mate with King, Bishop and Knight vs King without much effort (with reasonable time left for the game)?
0
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3answers
597 views

How is this not checkmate? I had loads of time to spare

See below my game last night, I am white and I got 3 queens. He only has the king left. We have loads of time left. It was a 30min game. As soon as I moved my original queen up one space and got him ...
2
votes
1answer
650 views

How is this checkmate … or does chess.com have a bug?

Playing as black against the chess.com computer, the following position was reached and chess.com declared checkmate in its favor. However, I don't see that the black king is in check. So is this a ...
0
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3answers
143 views

On the feasibility of a KBN-K mate within 50 moves using a particular method

Prove that it is possible, from any starting KBN-K position, to accomplish the mate by manoeuvering to arrive at key positions from a well-known method or strategy whilst the losing king actively ...
-2
votes
1answer
164 views

How is a game of chess won?

My understanding is that there are basically two ways in which a game of chess is won. (1) One side gives (or forces) checkmate, regardless of material situation on the board. He may be in material ...
7
votes
4answers
929 views

Is this considered checkmate if I touch a piece which can't make a legal move?

What if there's a touch move rule, and my knight or bishop is blocking my king, and I touch it. Is that a checkmate? If not, what is it called?
-4
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4answers
203 views

If a king is in check, can the opponent's king take said king if it puts them in check? [duplicate]

If a king is in check, can the opponent's king take said king if it puts them in check? Someone may think they win, but surely you can’t put yourself in check even if the opponent's king has been ...
-1
votes
2answers
287 views

Is it possible to give two more checks here?

If the knight moves then is it possible to give check mate? I have already given one check. I was playing a game of "3 check". How can I get two more checks? Is it not possible? 3 check is a mode in ...
1
vote
2answers
340 views

How to be more aware of smothered mate opportunities?

I've been playing ChessAcademy's android app for a while when I'm bored: thought it could improve my chess to be solving their tactic challenges (not sure if it's working though..). One pattern I ...
10
votes
4answers
3k views

En Passant Checkmate

I made a check with a pawn that was subject to an en passant movement. The check led to a checkmate, but the rules at chess.com didn't count it as a checkmate but let the opponent make his move. He ...
11
votes
2answers
2k views

When checkmate is impossible in a position

Edit This question is not a duplicate, as mentioned in my comment. The linked supposedly-duplicate question addresses neither my below question #1, nor question #3, nor question #2 except tangentially ...
5
votes
1answer
423 views

How are chess engines able to rank a Mate in X above a Mate in X+Y?

According to an engine, a mate in X moves = +infinity, since it is a forced win for it. Also according to an engine, a mate in X+Y moves = +infinity, since it's a forced win (just more moves, but an ...
12
votes
1answer
3k views

What is the longest proven forced win (including 50 & 75 move rules)?

What is the longest (currently discovered) number of moves for a forced mate position where players will use both the 50-move draw rule and the 3-fold repetition rule if it will help them avoid losing?...
-5
votes
2answers
119 views

Can I mate black in 4 moves in this game

Can I mate black in 4 moves in this game
2
votes
1answer
233 views

How to mate a king already in the corner with a knight and a bishop?

How can white mate black in 4 moves in this position? This might be easy but I am a beginner. 7k/7N/6K1/8/7p/7B/8/8 w - - 1 0
0
votes
1answer
158 views

How can white mate black in 4 moves in this particular game.

How can white mte black in 4 moves in this game. This might be easy but I am a beginner. (https://i.stack.imgur.com/r5n6R.png)
3
votes
1answer
156 views

How can white mate black in 4 moves?

In this endgame position, how can black be mated in 4 moves? Being a beginner, I am finding it difficult [FEN "8/8/6R1/8/8/4K2p/7k/8 w - - 0 1"]
0
votes
1answer
439 views

White gives checkmate in two moves

[FEN "5rk1/2Q2ppp/p7/2P5/1p6/1B5P/Pq2nPP1/3R1K2 w - - 0 1"] White, to move, gives checkmate in two moves. Can anyone find the solution?
-1
votes
1answer
157 views

How can black mate white in 4 moves in this game

How can black mate in 4 moves? [FEN "6k1/p5rp/3p1PR1/3Pp2Q/qBK1Pp2/5P2/2P5/r5R1 b - - 0 1"] [Event "Black to mate in 4 moves"]
7
votes
2answers
659 views

Checkmating the bare king with 3 knights – can the mate be forced on any edge square?

In the case where White has King and 3 Knights, and Black has just the bare King, it is known that White can force checkmate. But can White in fact pick any edge square in advance, and force the ...
19
votes
4answers
2k views

Fastest possible checkmate by en passant

En passant is somewhat of a rare move in chess. Checkmating by en passant, however, is an even rarer occurrence. But suppose both sides had the same goal to help cause a checkmate to their opponent ...
3
votes
2answers
352 views

Why continue to increase search depth after mate is found?

Playing with test sets, several times I come across a behavior of the chess engines which I can't understand: Let's say I have the endgame [FEN "8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1"] which after ...
10
votes
4answers
874 views

Can you mate with each of your 16 pieces on its original square?

An opinion poll conducted by problem composer Roberto Osorio over 10 master-level chess players in the Argentine Chess Club produced 100% wrong answers! :-) When the right answer is posted here, I ...
4
votes
1answer
111 views

What is the name of this mating pattern?

Recently I delivered the mate shown below. Does it have a name? [fen "1r5r/2p3pp/2R5/1pkPpp2/2b1P3/2K2P2/6PP/R7 w - - 0 1"]