Questions relating to checkmating.

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5
votes
4answers
212 views

A quiet mate in two

I teach chess to children and a colleague of mine told me of this position to show to the kids. Black plays and gives mate in two. It seems an easy position but the children I teach had difficulties ...
5
votes
5answers
341 views

Is it ethical to force a draw via perpetual check?

I was playing this game. I was white. We reached a point where my opponent could checkmate me in one move (by moving Rook to C1) but I forced him to a draw by stating that I would constantly check him ...
1
vote
2answers
89 views

Four way chess - checkmate

My friends and I have been playing knightmare chess in a four player variant. We were playing with the stipulation that when a player is checkmated, after his turn he removes his king from the board ...
2
votes
3answers
246 views

Check for checkmate

So I am implementing an intelligent chess agent but I can't get the checkmate working. I was wondering if there is a program that takes the chessboard notation and returns a result of yes or no to ...
2
votes
2answers
144 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
91 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
72 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
117 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
85 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
55 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
53 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
75 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
405 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
151 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
188 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
192 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
84 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
182 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
84 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
173 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
210 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 ...
13
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
139 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
204 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
173 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 ...
10
votes
4answers
417 views

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?

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
85 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
291 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
3answers
307 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
233 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
205 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
167 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
560 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
166 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"]
3
votes
2answers
238 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
330 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
151 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
751 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
525 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
100 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
213 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
231 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
97 views

Common sacrifice themes in attacks? [closed]

What are common sacrifical themes in mating attacks? For example, the Greek Bishop Sacrifice.
2
votes
2answers
283 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 ...