Questions tagged [records]

For questions related to (world) records in chess, e.g. the longest game (in moves or in duration), highest obtained rating, longest mate in n puzzle, etc.

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1answer
115 views

Latest time to castle in a tournament game

In a casual game I played, my opponent castled around the 80th move. I want to know what was the latest move in which a player has castled, in an official game. I don’t think that there is an entry ...
6
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3answers
150 views

32 pieces protected once: How many moves?

From the orthodox starting position, how many moves will you need to have the 32 pieces protected exactly once? (The answer is astonishingly low.)
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1answer
129 views

Shortest game controlling a single square 16 times?

Does someone know the shortest orthodox chess game such that a single square is directly controlled 16 times? After 1. Nf3 for instance, the square d2 is controlled 5 times. And 2. ... Qa5 pushes the ...
20
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1answer
4k views

Shortest stalemate in serious tournament game

I am looking for the shortest stalemate that has occurred in a serious chess game (there were no agreements between the players). So far, I have found only compositions, but is there a real game where ...
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0answers
62 views

What is the theoretical maximal total of material for the insufficient material draw? [duplicate]

The insufficient mating material rule says that the game is immediately declared a draw if there is no way to end the game in checkmate. This usually happens in KB vs K or KN vs K endgames. However, ...
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1answer
107 views

Have there been computer-vs-computer chess games exceeding 493 moves?

From a FIDE Online Arena Facebook post (which appears copy/pasted from elsewhere), I'm interested in the part in bold: (Image of a chess board with two kings and no pawns nor pieces omitted.) This ...
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2answers
855 views

Longest possible FEN

What is the longest possible FEN? The reason for that question is, that I am designing a PGN viewer (again), and I have noticed that the FEN is dependent on the width of the board (the FEN test area ...
2
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1answer
70 views

Maximum number of quiet moves in a position

The question of how many captures a position can have has been asked in the past: Maximum number of captures in a position Without captures, and without promotion, which I define as “quiet” moves, ...
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1answer
107 views

What is the fastest possible stalemate by castling?

It is known what the fastest stalemate is. But what but is the fastest possbile stalemate in which castling must be the last move? 33 ply is my best result so far. [FEN ""] 1. e4 h5 2. Qxh5 d6 3. ...
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2answers
1k views

Most pieces involved in checkmate in actual game?

I recall seeing a number of chess games where a lot of pieces are involved in the final checkmate, and was curious to know what is the maximum number of pieces of one player A that have been involved ...
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2answers
248 views

Challenge: Create the longest set of moves where the game is able to be perfectly reproduced from only the current board state and move number

The challenge is to create the longest list of half moves whereby an AI could re-create that list of moves perfectly, only given the ending board state and the number of moves. As example I will first ...
2
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1answer
226 views

What is the longest tablebase win that includes draw rules?

It has been asked the longest mate that includes draw rules is, and it is known what the longest tablebase mate is. However, what is the longest tablebase mate, i.e. 7 pieces or less, that accounts ...
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2answers
187 views

What rearrangent of the starting position's pieces, in any manner, has the fastest stalemate?

It is well known that the fastest stalemate is in 19 ply. But what is the fastest possible if all pieces, not pawns, may be shuffled at will on their first ranks? This will be difficult since there is ...
26
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1answer
5k views

What is the fastest way to reach stalemate?

It is known that the minimum number of moves required for checkmate is 2 moves (4 half moves) resulting in a victory for Black. However, what is the minimum number of moves required for stalemate? ...
2
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1answer
141 views

What is the longest wait before a draw offer is accepted?

If I understand correctly, once player A makes a draw offer, the opponent player B retains the right to accept the draw offer as long as player B does not rejected it verbally, or touch a piece with ...
3
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1answer
75 views

How many matches have there been at the top level which have ended up with a tied score and a winner?

In the current FIDE Grand Prix tournament in Jerusalem the first round match between Pentala Harikrishna and Sergey Karjakin ended in a tied score, 4.5-4.5, but Karjakin won because the last game was ...
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2answers
506 views

What is the farthest away a game can be from a guaranteed checkmate?

What is the maximum number of moves away from checkmate that a player can be where checkmate is guaranteed? There are many positions that are a guaranteed win for a player if played perfectly right? (...
3
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1answer
293 views

Longest sequence of moves by one player with the same piece?

I suspect the following game in the European Club Champioship between David Howell and Pentala Harikrishna set a number of records. [title "Howell, David W L vs Harikrishna, Pentala"] [fen ""] 1. e4 ...
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1answer
394 views

What is the maximum number of promoted pawns ever achieved in a competitive game?

In theory, a player could advance all eight of their pawns to the end of the board, promoting them all. In my own experience, games with more than two promotions on one side have been vanishingly rare,...
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2answers
274 views

Record for most double-steps by pawns in a game?

Quite simply, what known official game, as in a tounament game, holds the record for the most double-steps by pawns? Drawn and won game are both considered. The most I have found, in quite a few games,...
20
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1answer
2k views

From the start of the game what is the longest possible series of consecutive white moves where white can do those moves no matter what black does?

From the start of the game what is the longest possible series of consecutive white moves where white can do those moves no matter what black does? So I want the longest list of moves white can do ...
5
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1answer
292 views

Record for most stalemates in one?

Is there a known record for the most possible stalemates in one in a legal position, for with and without promoted pieces? I have gotten some results out of my own work. For without promoted pieces, ...
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2answers
601 views

Most possible movement by the losing side in a zugzwang position

Usually, in a zugzwang, the idea is to limit the number of moves that the opponent can make, but it is also possible for them to have numerous moves in oddball scenarios. What is the highest possible ...
5
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3answers
326 views

Maximum number of ways to get out of check

What is the maximum number of legal moves in a legal position, given that the player is in check? It's easy to see that 43 is an upper bound. Let's suppose the white K is in check along a diagonal by ...
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1answer
758 views

What is the longest possible series of consecutive captures?

What is this the longest possible series of consecutive captures in a legal position? Here is an example of 25 on the same square, which is not required. [FEN "q1kr2q1/1qnqnb2/2prp3/q2pK3/2P1P3/...
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2answers
512 views

What is the longest possible sequence of double checks?

The record for the most mutual checks in a legal position is known. But what is the record for double checks? There is one rule-threefold repetition applies. Four criteria exist-promoted pieces ...
3
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1answer
225 views

What is the highest number of possible forced checkmates in a legal position?

Not a duplicate of, but inspired by: A position in which checkmate is forced (obligatory) What are the legal positions that have the most possible forced checkmates for one side, and for both sides?
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2answers
515 views

Is there a record for threefold repetition for when the claimed positions are the farthest apart, in terms of moves?

That’s one long question, so let’s break it down. Threefold repetition, as many know, is when a draw occurs, after the same position, with all piece types on the same square, all possible moves and ...
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1answer
612 views

What is the record for most pawns on a file of both sides in a professional chess game?

Some of us have heard about the famous game with the longest surviving quadrupled pawn structure, i.e four pawns on the same file (Kovacs - Barth, Balatonbereny 1994.) It is one of many games with ...
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2answers
259 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 ...
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3answers
271 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 ...
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6answers
314 views

Position with the largest material imbalance that is a draw, no matter whose turn it is?

I am curious if there is a known position with the largest material imbalance that, no matter who it is to move, the weaker side can hold a draw.
3
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3answers
268 views

What is the quickest way to reach a mutual, symmetrical stalemate?

What is the fastest known game that ends that in a mutual stalemate position that is symmetrical?
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1answer
349 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?
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1answer
228 views

What is quickest way for an en passant checkmate after all other such captures?

Here’s an odd challenge: What is the fastest way for an en passant checkmate after all other seven en passant captures have been done?
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1answer
2k views

What longest number of moves for a forced mate position (including draw 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?...
17
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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 ...
8
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1answer
290 views

Which chess position requires the most moves to reach?

For each legal chess position there exist a shortest sequence of moves from the starting position to that position. Which position requires the most moves to reach?
5
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1answer
277 views

Shortest sequence of moves to create biggest material imbalance

What is the shortest game with the largest material imbalance? This of course means that one side will have 9 queens, 2 rooks, 2 bishops, 2 knights, and a king, and a bare king on the other side. From ...
4
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1answer
2k views

Longest number of moves that have been identical in two independently played games on record

Are there any recorded examples of two chess games that were identical till the end? If the answer is no (which is most likely the case), what is the longest number of moves that have been identical ...
8
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3answers
2k views

Maximum number of pieces on board in dead position

It is possible in a chess game to have a dead position in which both players have all eight pawns, one bishop, and a king--20 pieces total. If the two players' pawns are interlocked in "zig-zag" ...
13
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3answers
433 views

Fastest King vs King endgame

What is the fastest possible game that ends in a King vs King endgame? Please post a game and tell me the number of half-moves you've achieved. By some simple logic, I can prove that this number is ...
10
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5answers
1k views

What is the longest known stalemate your opponent in x-moves problem?

What is the longest known stalemate your opponent in x-moves problem where the given stalemate is the fastest one from the initial position? A win is not possible, but stalemating your opponent so ...
8
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3answers
482 views

Problems: record for most mates-in-2

Does anyone know what the record for most mates-in-2 is for a composed problem? Example: this one has 58 different moves that mate in 2. [FEN "6R1/8/8/8/3Q3B/5K2/7k/1R6 w - - 0 1"]
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2answers
529 views

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

Having been inspired by an article on ChessBase.com, what is the longest current tablebase mate with a unique optimal line? By unique, I mean for each of the winning side's plies, there is only one ...
6
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4answers
8k views

What endgame, with 3 to 6 pieces, has the longest known forced checkmate?

I am wondering, what endgame, with 3 to 6 pieces, 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 ...
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3answers
2k views

What is the most queens that have been on the board in a grandmaster game?

There are quite a few grandmaster games with 3 queens or 4 queens, but what is the highest number of queens on the board in a game between two GMs? I'd be interested in both the most on the board ...
8
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2answers
440 views

From a full board to a pawn endgame in the shortest possible number of half-moves

Is any game known where all the pieces (except the pawns) are still on the board, and where a piece (not a pawn!) is captured at each half-move, leading to a pawn endgame? In other words, is there a ...
4
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2answers
350 views

Longest period with each piece “hanging”

What is the longest period in a real game with a position in which all pieces were "hanging"? The game can also be rapid, blitz or blindfold, but both players should have at least a 2000 ELO....
18
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4answers
3k views

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

By 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# Above is an example with ...