Questions relating to checkmating.

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3
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2answers
116 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 ...
-1
votes
1answer
120 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 ...
0
votes
0answers
26 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 ?
5
votes
1answer
133 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 ...
0
votes
0answers
110 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 ...
4
votes
2answers
961 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
19 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.
2
votes
2answers
66 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 ...
2
votes
4answers
177 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 ...
1
vote
1answer
127 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 ...
3
votes
2answers
498 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 ...
1
vote
3answers
193 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 mate in 2 variations 1.Qd1 Kc3 2.Rxd5# 1.Qd1 Kc5 2.Qg1# 1.Qd1 Kxe5 2.d4# But I cannot seem to ...
0
votes
1answer
72 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?
7
votes
4answers
1k 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 ...
4
votes
2answers
107 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 ...
1
vote
2answers
134 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
73 views

Common sacrifice themes in attacks? [closed]

What are common sacrifical themes in mating attacks? For example, the Greek Bishop Sacrifice.
2
votes
2answers
122 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 ...
3
votes
2answers
301 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 ...
-1
votes
3answers
106 views

How to tell how far you are from checkmate?

What are some tips to tell if you are close to checkmate?
0
votes
0answers
108 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 - ...
1
vote
1answer
73 views

About forcing a checkmate

Could a player sacrifice 3 of his pieces , the opponent's King being forced to take each piece in a sequence of moves where the opponent's King lands on a space where it is promptly checkmated? A kind ...
2
votes
1answer
329 views

Fool's Mate - As White?

Fools Mate is simple as black, white opens right up, 2 moves, done. But if you attempt to do this as white, once you move, black moves, you move, it's only check, there is no checkmate. Is it ...
3
votes
1answer
180 views

Can Black finish off White?

The below position arose from the Queen's Gambit ( Exchange variation ). [Title "Black to move"] [StartFlipped "0"] [fen "2b1rnk1/1pr1qppp/p1p5/2Pp4/P2P4/1R1BPN1P/2Q2PP1/1R4K1 b - - 0 1"] I have ...
4
votes
1answer
2k views

When you check someone, do you have to say “check”?

Yesterday I was playing with a friend, I was almost out of time, he checked me, didn't say anything, I didn't see the check as i was in a hurry to make my move. And I was mated. Computers don't let ...
0
votes
1answer
178 views

Could you show me some very easy mate in 20?

I am looking for some puzzles where there is a forced mate in as many moves as possible (ideally 20 or more). Yet the puzzles need to be as easy as possible! You will probably need to find some ...
-1
votes
1answer
136 views

Is my engine working properly?

I noticed that when I put my Houdini 3 Pro x64 in the "Infinite Analysis" mode, he tends to use a lot of time to evaluate the bad moves... Sometimes he even uses like 30 seconds on the first 10 best ...
0
votes
1answer
217 views

Am I allowed to do a checkmate and win the game in this situation?

I am playing with whites. Currently my queen is at c7 and it's my turn. If I move my queen to d8 and declare check on the king, is this also a check-mate? sorry for the seemingly noobish question, ...
1
vote
1answer
443 views

Stockfish's algorithm

I'm trying to understand how stockfish thinks, how calculates best move... i'm reading open source code, but it's not clear. I want to know, should i know some theory about algorithms to understand ...
9
votes
3answers
4k views

Checkmate with two knights?

Is it really possible to checkmate with two knights and king against a king? There is a mating position with this but no extra tempo to do it in real game. What are the explanations, why knights ...
4
votes
1answer
328 views

Four way chess Checkmate

I don't know how many people play four way chess, but do you have to checkmate an opponent's king or actually kill it to take over his army?
14
votes
5answers
2k views

What is sufficient mating material?

The FIDE chess rules describe that "The game is draw when a position is reached from which a checkmate cannot occur by any possible series of legal moves" (FIDE rule 9.6). This rules is sometimes ...
4
votes
2answers
2k views

How do you checkmate with the pair of bishops?

How do you checkmate with the pair of Bishops and King versus King? Are there any stalemates to look out for? What are the key ideas / positions / tricks to make it work? Thanks!
3
votes
2answers
177 views

How do you checkmate with a queen?

How do you checkmate with a King and Queen versus King? Is there a method that is faster than other methods in terms of moves? Is there a fool proof method if you are in time trouble? Thanks!
8
votes
4answers
1k views

How do you checkmate with a rook?

How do you checkmate with a Rook and King versus King? Is there a good and fast method? Can you explain it in a good way? Thanks!
2
votes
1answer
173 views

Pawn giving checkmate

My computer checkmated me with a pawn move. I could have taken that pawn en passant but I wasn't given a chance to do that. Was that a fault of my computer, or is there a rule stating that a pawn ...
6
votes
2answers
134 views

What makes a contemporary chess problem decent?

One can set up some pieces and concoct a situation that has, say, a mate in 3 (yes, I know it is not straightforward, but if you sit for a few hours you can do it). Such problem would probably not be ...
3
votes
3answers
500 views

Endgame KNN-k chess puzzle checkmate

[FEN "8/8/8/4N3/4N3/4K3/8/4k3 - - - 0 0 "] Hi All, I have problem like this, when I played chess puzzle as you can see, logically, there are position to make checkmate to Black King, but till now, I ...
4
votes
1answer
2k views

Minimum moves to checkmate?

What is the minimum number of moves, counting both sides, in which a checkmate can be made?
9
votes
3answers
43k views

With only a king left, how many moves remaining until a draw?

I am a beginner in chess. If I have only a king left, how many moves does my opponent have to mate me?
8
votes
3answers
2k views

Is it possible to castle while checkmate?

I am new to chess gaming; please answer this for me: Is it possible to castle while checkmate? Thanks in advance.
11
votes
1answer
896 views

Why is it illegal to move into check?

In chess, it is against the rules to move into check, or to not move out of check. But why? Obviously, if you went against this rule, you'd immediately lose. But it seems strange to make it illegal to ...
4
votes
2answers
540 views

Most beautiful checkmates? [closed]

What is the most beautiful checkmate you've ever seen in high-level play? The beauty might be caused by one of the following: A brilliant setup (the couple moves preceding the mate were brilliant) ...
13
votes
2answers
649 views

What is the shortest known GM level OTB game to end with checkmate?

What is the shortest known on the board game played between GM rated players that ended with a checkmate? "Shortest" does not mean the game has to be very short. Note: Edited this question twice ...
15
votes
3answers
474 views

KBN vs K checkmate on nonstandard boards

I know how to win the endgame with bishop and knight, but it is a slippery process and seems to be just barely a win, with the enemy king very nearly escaping. For this reason, I am curious about the ...
3
votes
3answers
17k views

Is it possible to checkmate with knight and king against king?

I would like to clarify two things: Is it possible to checkmate with only a knight and a king against a lone king? What will happen when one side has a king and knight and the other has just a king, ...
12
votes
1answer
548 views

How many such positions are there? (chess/math checkmate puzzle)

I'm interested in this kind of position: There are only 4 pieces on the board. If Whites goes first, they can checkmate in one move. If Blacks goes first, they can checkmate in one move. For example: ...
4
votes
3answers
244 views

What are the possibilities for checkmating with two bishops here?

Consider the following position: What are the possibilities for checkmating the white king within 16 moves?
4
votes
1answer
212 views

In how many cases of K, P vs. K, N, N endings can the stronger side force checkmate?

For instance, it wouldn't be possible if the Pawn was on the verge of queening. But is it always possible if the Pawn started off on its original square? Is it usually possible? Or is it only ...
13
votes
4answers
907 views

Is it a draw by insufficient material if the board is K vs K, N & N?

It isn't possible to force checkmate with King vs. King, Knight & Knight. A checkmate position, however, is still possible to achieve, so does that mean the 50 move rule applies, or does ...