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
83 views

What is the shortest 1:16 mutual stalemate with the White king at home?

In this ancient r/chess thread, several uses explored the shortest possible 1:16 mutual stalemate. StoofBuzze provided a record in 42.5 moves. However, what is the shortest such game in which the ...
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2answers
183 views

Another mobility puzzle

This is the "opposite" of A mobility puzzle - I held it back because it could have interfered with Schwalbe 2021 construction challenge. Thus: Put a maximal number m of pieces on the board ...
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2answers
574 views

In Crazyhouse, what is the minimum number of moves to achieve maximum material difference?

If one side captures everything and promotes all pawns (including the opponent's re-placed pawns) to a queen, it is possible to achieve 206 points of material difference 18 queens, 4 rooks/knights/4 ...
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1answer
123 views

I have discovered a selfmate requiring 1,351 moves to enforce. How does this move-count stack up against the 'record holder'?

I've discovered a selfmate requiring 1,351 moves to enforce. What is the highest move-count known for a selfmate? {The starting position is provably legal}.
2
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1answer
171 views

Longest forced win after 3 moves

It is possible to reach (exactly) #8 after just 3 moves: [Title "#8 after 3 moves"] [FEN ""] 1. e3 f6 2. Qf3 Kf7 3. Nh3 Qe8! 4. Ng5+ Kg6 5. Bd3+ Kxg5 6. Qf4+ Kh5 7. g4+ Kh4 8. Qg3+...
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2answers
780 views

Longest *shortest available* fixed sequence of moves leading to checkmate?

What is the longest fixed sequence of consecutive moves you can find in any legal position that guarantees checkmating the opponent regardless of their responses (whether by forcing particular ...
5
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3answers
374 views

The quickest mate in n

Obviously inspired by the analogous selfmate question. (Helpmate would also be possible in principle, but looks a bit silly.) Thus, 1.f3 e5 2.g4 allows Black a #1, and 1.f3 e5 2.h3 a #2. 1.f4 e5 2....
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1answer
183 views

Longest sequence of forcing moves?

What is the longest fixed consecutive series of moves for one player such that the other player's response is forced every move? Assume draw rules must be obeyed (threefold repetition, 50-move rule, ...
3
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1answer
118 views

A mobility puzzle

[FEN "8/8/8/8/pp6/kp6/1p6/1K6 w KQkq - 0 1"] This is a well-known position: both sides are stalemated (if it's their move). It's the lightest position with this property. Devise the ...
2
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1answer
345 views

List of female chess players by peak FIDE rating

Update/Request: The answer currently doesn't include countries and other trivia like in the original one. Please consider posting an answer like this or editing current answer to include these. ...
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0answers
161 views

Highest depth ever achieved

I saw a guy that went into depth 70 with no search moves at 41, 192, 897, 168, and 184 nodes from the starting position on Stockfish a few years ago. I would like to know if this is still a record or ...
5
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1answer
74 views

What is the longest sequence of consecutive captures in a FIDE rated game?

What is the longest sequence of consecutive captures (including both pawn captures and piece captures) in a FIDE rated game?
5
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1answer
227 views

Is it possible to reach King vs King by moving each piece at most twice?

I'm interested in short games that reach a King vs King endgame. Sam Lloyd reached King vs King after only 17 moves. This has since been improved to 16.5 moves. (See this and that.) One can show that ...
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2answers
467 views

The quickest selfmate in 1

How quickly can a legal game reach a position where one side must give checkmate? This is in effect Evergalo's reading (see his (now deleted) answer) of Rewan Demontay's Question 33154; that question ...
0
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1answer
156 views

What is the fastest way to reach a position in which one side is forced to choose between checkmate and stalemate?

I had an interesting idea recently. While there are many proof games ending in checkmate or stalemate, why not both, I thought. So, thus I wondered, what is the fastest way to reach a position in ...
2
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1answer
101 views

Fastest way to get both kings to the other side of the board?

Say that both players collaborate to get White's king to the eighth rank and Black's king to the first. What's the shortest sequence of moves that achieves this?
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1answer
140 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 ...
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3answers
161 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.)
4
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1answer
203 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
71 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
191 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
1k 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
100 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, ...
2
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1answer
246 views

What is the fastest possible stalemate by castling?

It is known what the fastest stalemate is. But what but is the fastest possible stalemate in which castling must be the last move? 33 plies is my best result so far. [FEN ""] 1. e4 h5 2. ...
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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
362 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 ...
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1answer
341 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
202 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
6k 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
151 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
79 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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4answers
1k 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
312 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 ...
5
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1answer
749 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
331 views

What is the record for the most pawn double-steps in a professional game?

Quite simply, what is the record for the most pawn double-steps in a professional game? Drawn and won games are both considered. Computer games of any kind are not to be considered. The most I have ...
20
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2answers
3k 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 ...
6
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1answer
406 views

What is the record for the 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 did some constructing myself for a start. For without promoted pieces, I ...
0
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2answers
640 views

The highest amount of moves by the losing side in a zugzwang

In zugzwang, the usual idea is to limit the number of moves that the opponent can make. But they can also have many moves in certain scenarios. What is the highest amount number of moves by the losing ...
6
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3answers
433 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
838 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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3answers
826 views

What professional game has the quickest sequence, starting from move one, to quadrupled pawns?

In the blog "AJEDREZ, SIN DUDA", I came across a page that gives a game featuring quadrupled pawns. [Title "Zheliandinov-T. Sereteli, 35th Championship of the USSR, Kharkov, 1967"] ...
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2answers
647 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
341 views

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

Having been inspired by a similar question, what legal positions have the most forced checkmates for one side and for both sides?
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2answers
720 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
910 views

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

Some of us have heard about the famous game Kovacs-Barth, Balatonbereny 1994, which has the longest known surviving quadrupled pawn structure . It is one of many games with quadrupled pawns for one ...
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3answers
318 views

Is this the quickest way to clearing the board to two kings? [duplicate]

Is 21 moves the least needed to get board down to 2 kings? [FEN ""] 1. e4 d5 exd5 Qxd5 Qh5 Qxa2 Qxh7 Qxa1 Qxh8 Qxb1 Qxg8 Qxb2 Qxg7 Qxc2 Qxf8 Kd7 Qxf7 Qxc1 Ke2 Qxd2 Kf3 Qxf2 Ke4 Qxf1 Qxe7 Kc6 Qxc7 ...
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2answers
290 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
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3answers
317 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
376 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.