Questions relating to checkmating.

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2
votes
2answers
101 views

Is it true that at any time only one piece can put king in check

I am writing a simple chess game in which I have to determine the end game conditions. My algorithm requires the piece that is putting the opponent king in check, and checks the following: King ...
3
votes
3answers
83 views

Is any chess software specifically for forced mates?

Is any chess software specifically for forced mates? In particular, such software can only prune the search tree when it can prove that the the move doesn't affect the existence of length of a ...
2
votes
0answers
53 views

What is the longest current tablebase mate with a unique optimal line?

What is the longest current tablebase mate with a unique optimal line? (I'm inspired by this post on chessbase.com.)
-3
votes
2answers
103 views

Discovered check when winning [duplicate]

Is it ok to put your own king in discovered check as you take the other king? (Does the taking of the other king even count as a move, or is the checkmate the last move?) Edit: When thinking about ...
-3
votes
1answer
75 views

What does checkmate actually mean?

Checkmate means king is in trap and there is no way out. If it is my turn and opponent's king has a way out from trap, am I said to win the game? EDIT: Suppose my rook is in the adjacent column ...
1
vote
0answers
48 views

Has anyone ever (beautifully!) escaped check with checkmate? [duplicate]

I was wondering if this beautiful situation has ever happened in a real-life game, especially in a competition. Has anyone ever escaped check with checkmate? That is: has anyone ever, after being ...
12
votes
2answers
1k views
1
vote
1answer
46 views

The Art of the Checkmate, Quiz 24: Is there a win?

This is quiz 24 from The Art of the Checkmate by Renaud & Kahn. Black to play and win rn3rk1/pp3ppp/3b1n2/2pPq3/2B1P3/1NN2bP1/PPPQ1P1P/R1B2RK1 b - - 0 1 The authors give this as the winning ...
1
vote
2answers
66 views

Is it ever posible to win if the only pieces left are two kings and a knight? [duplicate]

If the only pieces left on the board are the two kings and a knight, is it ever possible to force check mate? I mean, if the bare king avoids the edges and stays close to the opponent's knight, I ...
4
votes
3answers
356 views

What endgame has the longest known forced checkmate?

I am wondering what endgame has the longest checkmate with optimal play? Right now, the longest I'm aware of is the two knights versus one pawn endgame, which in certain positions can take up to 115 ...
0
votes
3answers
125 views

Minimum sets of pieces required for checkmate?

What are the minimum sets of pieces required for checkmate when the opponent has no other piece that the king?
4
votes
1answer
184 views

Chess challenge #10: A beautiful knightmare

This time I bring you a beautiful composition. White is down material but is about to queen the d7 pawn. The only problem is the knight fork on f7 and if he doesn't act very quickly Black is going to ...
3
votes
2answers
186 views

Chess challenge #9: Can you solve it in less than 5 minutes?

Today I remembered this position that I saw a few months ago in a tweet by Sergey Karjakin: [fen "2k5/8/8/BQ6/4K3/8/8/8 w - - 0 1"] It seemed very easy to me because there are just 4 pieces left ...
1
vote
2answers
82 views

What checkmates are appropriate for 7 year old kids?

I give chess lessons to children and I've been told by my boss that the most important ability at this age is the capacity of delivering checkmate to the opponent. I've taught them the back rank ...
3
votes
2answers
169 views

Mate vs timeout

I've read about the "mate prevail thing" here : Mate Prevails - Chess Rule but I couldn't get a clear view on one odd point. I get that the mate move prevail, but if you couldn't do it before the ...
5
votes
1answer
81 views

Tactical challenge #2 - Attacking the kingside

The previous challenge was solved very quickly so here I am with a new one. Still a very easy one but hopefully a bit more challenging that the previous one. Black has just played Qb6 and it is ...
5
votes
2answers
160 views

Chess challenge #1: Mate in one

This is the first of a series of challenges I'll be posting regularly. In this case it is just a simple mate in one. This is the position: White plays and gives mate. It seems very easy but there ...
-2
votes
2answers
141 views

Types of Checkmates [closed]

I have heard of different types of checkmates, but don't know how to do them. What kinds are there and how can I perform them? I recently found out that there are names for different types of ...
12
votes
1answer
1k views

What is the solution to this mate in 2 puzzle?

What could be the answer to it?
2
votes
4answers
1k views

What happens if a player mistakenly thinks they have been checkmated?

A quote from Wikipedia: The objective is to 'checkmate' the opponent's king by placing it under an inescapable threat of capture. Suppose two players (A and B) play the game using the old ...
2
votes
2answers
123 views

Does checkmate over ride 50 move violation?

If a move creates the 50 move violation and at the same time creates checkmate, does the checkmate take priority over the draw ?
4
votes
1answer
193 views

How many steps to mate the only king with all pieces?

Suppose Black has only one king in its initial place and White has all 16 pieces in their initial places. How many steps does it take to ensure a checkmate? And what are all solutions? Now that White ...
5
votes
2answers
163 views

Is this a chess variant? Chess without taking pieces!

I just noticed a special style of playing chess in some of the top games in chess.com; A chess without taking pieces: The whole game here: [FEN ""] [Event "Live Chess"] [Site "Chess.com"] [Date ...
9
votes
4answers
366 views

Checkmate in response to a check

Is it possible for a white piece to deliver check to the black king, but for black's counter move to result in white getting checkmated? Has this happened in games between top players?
1
vote
1answer
80 views

Acknowledging a check mate

Do you have to tell someone that they set them selves up for a check mate? For example if the queen is guarding the king on both ends and one person moves there queen to the left. Does the opposite ...
3
votes
1answer
257 views

Why does the game end at checkmate and not upon taking the king? [duplicate]

Ever since I was a kid this has felt kind of odd to me. Victory in chess is achieved by "cornering" the king, and not by taking him outright, like what you do to all the other pieces. I always ...
1
vote
0answers
70 views

Strategy of Bishop and Knight Checkmate [duplicate]

I am a beginner when it comes to handling King, Bishop and Knight vs Kingfor a checkmate. Can I know what is the strategy to follow in the steps that ultimately leads to the checkmate? This is ...
1
vote
2answers
260 views

Moving a piece out of the way for check

I was recently told you cant move a piece out of the way of a second piece to allow the second piece to put the other player in check. Example- I have my queen, my castle and their king in a row. I ...
1
vote
2answers
209 views

It's not check but the next move is checkmate

I have 5 pieces left and my opponent only has his king. It is my opponent's turn and his king is not in check but everywhere his king moves is checkmate. Who wins?
4
votes
2answers
197 views

What is the maximum DTM with K+J vs K?

What is the maximum DTM in the endgame king + janus vs king on a 10x8-board ? The janus can move like a bishop or like a knight. Since both sides have two additional pieces, the board has 10 columns ...
0
votes
1answer
154 views

Full board with full point mutual zugzwang

Is there a position with all pieces on board such that the side to move loses ? Is there a position with all pieces on board such that the side to move is checkmated in 1 ? [FEN " "] 1. Nc3 Nf6 ...
2
votes
1answer
70 views

Game since 2014 with both kings under fire

Does anyone know a game since 2014 with both players at least ELO 2000, where both kings are about to be checkmated and the game ends because one side cannot avoid checkmate ?
6
votes
1answer
494 views

What is the longest known sequence of forced moves leading to a checkmate for one side?

With forced move, it is meant that the player has only one legal move. [fen "7k/q5Q1/p4PPK/6PP/8/5P2/8/8 b - - 0 1"] 1... Qxg7+ 2. fxg7+ Kg8 3. f4 a5 4. f5 a4 5. f6 a3 6. f7# is an example with 10 ...
1
vote
0answers
160 views

Longest way to mate with 1 queen against 4 queens

What is the longest way to checkmate with 1 queen against 4 queens (no other pieces on the board) ? Since there are ways 13 moves long with a queen vs two queens, I conjecture this should be ...
5
votes
2answers
1k views

How do I mate here?

I'm White, and I lost this game because the time was over. What move do I need to do the mate combination? [FEN "8/6pp/p3R3/5rk1/3B2N1/5P1P/PP3P2/5K2 w - - 0 1"]
0
votes
0answers
24 views

Is this a valid check-mate? [duplicate]

If white king were to take black rook, black bishop couldn't be able to take King as it is protecting black King.
3
votes
2answers
218 views

how to evaluate the position inside the search function

using PVS Algorithm with Quiet search and zero window search what should the range of the score be (-infinity, infinity ) could it be as small as (-16000,16000) and what should the search return if ...
3
votes
4answers
304 views

Are there any grandmasters who always play until checkmate?

Are there any high-level players who are either known for playing games out until the bitter end or have done so in famous circumstances? Is this considered poor etiquette (I'd imagine it would be ...
2
votes
1answer
149 views

Theoretically, would it require more or less skills if the objective is to be the first to be checkmated?

I have seen variations of other board games or strategy games where the aim is to actually 'lose' the game by forcing your opponents to make moves. Applying this concept to the rules of chess, would ...
5
votes
2answers
725 views

Forced checkmate examples where engines fail

Do you know example where recent chess engines (Houdini, Rybka, Komodo, ...) failed to find a forced checkmate. I guess they must find mate in 1 or 2 all the time but maybe are they failing to be as ...
2
votes
4answers
502 views

Is there a checkmate in the next move?

My friend claims that there is a mate in the next move. White to move and checkmate. I am aware of 3 mates in 2 variations: 1. Qd1 Kd3 2.Rxd5# 1. Qd1 Kc5 2.Qg1# 1. Qd1 Kxe5 2.d4# But I cannot ...
1
vote
1answer
92 views

About unusual forced mates

Are there 'legitimate' chess positions were say white can force a mate by sacrificing 4 of its pieces in succession one after the other? Can this be done even if white has less material than black?
8
votes
4answers
2k views

Is this a checkmate for White?

[FEN "8/3RkQ2/3B4/8/8/8/8/8 w - - 0 1"] Is there a way out for Black? My son and I finished this way (only the relevant parts of the position are shown in the diagram), but reading about ...
5
votes
2answers
194 views

What are the minimum required pieces for checkmate in 3d chess?

Assuming the rules of millennium 3d chess, what are the minimum required pieces for checkmate? I realize this is an extremely difficult question, but in regular (2-dimensional) chess, we have rules ...
2
votes
2answers
204 views

Is there a forced mate/ winning advantage?

Recently I played a game in a High School league match as the top board. I played f4 followed by d5 (very standard). I played passively and waited out his attack and soon gain the momentum. At around ...
0
votes
1answer
95 views

Common sacrifice themes in attacks? [closed]

What are common sacrifical themes in mating attacks? For example, the Greek Bishop Sacrifice.
2
votes
2answers
250 views

How do I improve my checkmate skills?

I am able to develop my pieces systematically and purposefully. I am also good at defending my pieces. However, when the game gets closer to an end, I need to be able to see different mate variations ...
4
votes
2answers
314 views

What should be my approach to checkmating efficiently?

[fen "r1bqk2r/ppp3Bp/2n5/8/1b2p3/1P2n1P1/P4PBP/RN1Q1KNR w kq - 0 13"] I was playing a game where I got to this position as black on lichess.org - the analysis said that checkmate was unavoidable ...
0
votes
3answers
152 views

How to tell how far you are from checkmate?

What are some tips to tell if you are close to checkmate?
1
vote
0answers
139 views

Which international tournament chess game has the record of longest sequence of forced moves until checkmate?

I want to know which international game has the longest sequence of forced moves until checkmate, even if the opponent resigned the game. Thanks in advance. Note : Result should not be drawn [1/2 - ...