Questions tagged [chess]

A puzzle related to chess. Questions about chess which aren't puzzles are off-topic and should be asked on Chess Stack Exchange.

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1answer
718 views

Can more than 24 knights of each color be placed on a chessboard without any pieces attacking opposite color?

The maximal number of knights of a single color that can be placed on a chessboard without any knight being one knights-move away from any other is 32; such a position may easily be achieved by ...
10
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6answers
2k views

The Bunny's Tour

The Bunny is a new chess piece. It can move in 2 different ways: Diagonally, but only exactly one space (so like a bishop with the limitations of a king). It can also "Bunny-Hop" over another bunny. ...
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7answers
7k views

How many Chess Pieces are needed to control every square on the board? No Piece Restriction

You may use as many pieces as you like. Pieces do not control the square they occupy. Accepted Answer goes to the person that has the least score. Piece cost: Pawn - 1 Knight - 3 Bishop - 3 Rook - ...
4
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2answers
891 views

How Many Pieces from Both Sides can you Place on a Chess Board Without Attacking a Side?

How many pieces can you organize on a Chess board without one side being attacked by the other? This scoring will be used to prove you have the highest. Piece cost: Pawn - 1 Knight - 3 Bishop - 3 ...
14
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5answers
4k views

How many Chess Pieces are needed to control every square on the board?

You may only use pieces in the original set, and all your pieces must be the same color. The king is not allowed. Pawns do not get promoted. Pieces do not control the square they occupy. Accepted ...
7
votes
3answers
531 views

How Many Speedy Knights on a Chess Board?

Similar to How Many Knights on a Chess Board? however speedy knights move the way the knight moves, then the way the knight moves AGAIN. However they cannot backtrack to their starting position. How ...
21
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3answers
3k views

The separation of chess pieces

Is it possible to order a complete set of chess pieces of the same color (8 Pawns, 2 Knights, 2 Bishops, 2 Rook, Queen and King) in such a way that none of them attack each other? If so, how?
4
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1answer
678 views

How many squares can standard chess pieces control?

How many squares can you control with only one set of chess pieces of the same color? (8 Pawns, 2 Knights, 2 Bishops, 2 Rook, Queen and King) Edit: Pieces cannot attack (control) the square they are ...
2
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2answers
2k views

How Many Knights on a Chess Board?

How many knights can you fit on a chess board without any being threatened?
3
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1answer
678 views

How many Amazons on chessboard?

Queen is combination of Bishop and Rook and Amazon is combination of queen and knight. The question is how many Amazons can place on a standard chessboard that non of them attack each other without ...
5
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2answers
424 views

How many Queens on a board

Similarly to this question: How many Queens to threaten themselves. What it the maximum number of queens you can place on an 8*8 board such that each queen is attacked precisely twice: with no other ...
7
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2answers
1k views

How Many Queens to Threat Themselves?

How many queens can be placed in a standard $8*8$ chessboard to threat each of them exactly once by other queens?
5
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1answer
1k views

Hidden Message: The Army Message

A soldier of the International Army received a message which shows 2 pictures of a finished chess game (shown below) with the text; The White Army stood still, while the Black Army dashed. What is the ...
3
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1answer
264 views

Non-Diagonal Pointing Problem

You can see the rules for pointing problem at this article. It has been clarified that there is no solution to this question. But, what if we remove the diagonal rule? is there any solution?
3
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1answer
457 views

How to control the whole board with 8 standard pieces?

How to control the whole board with 8 standard pieces (one king, one queen, two rooks, two knights, two bishops)? P.S. A piece doesn't control a cell simply by staying on it, so another piece must ...
6
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3answers
1k views

Most moveable chess position

What would be a chess position, where a player (white or black) has a maximum possible number of different moves to make? There are two options: 1. The position must be possible to obtain in a ...
5
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1answer
521 views

Optimal strategy against a random opponent

Imagine a very big number (2N) of people, who do not know each other, and play the following game: Players are divided into two equal groups: A and B. In each group players are numbered from 1 ...
8
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2answers
2k views

How many Queens and Knights does it take to cover a chessboard?

Given an 8x8 chessboard, your goal is to "cover" each space on the board. A space is "covered" if there is a piece on it, or if a piece on the board can be moved to that space in one move. If you ...
11
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1answer
714 views

Find the color of the chess pieces

The colors of the pieces in the diagram is unknown. The diagram can be obtained from a real game. One needs to find the color of each piece: Black or White. I do not know the full solution. It is ...
10
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1answer
829 views

Is there a retrograde analysis puzzle like “Point on the incorrectly drawn chess piece”?

Does anybody know a nice chess puzzle, where the question states: Exactly one piece is drawn incorrectly on this diagram; another piece must be drawn on its position. Find the incorrectly drawn ...
9
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1answer
2k views

What is the position chess with the longest string of moves before mate?

In chess puzzles, the objective of the puzzle is usually to checkmate the opponent using some form of novel strategy or tactic. For example, this puzzle from chess.com has white to play and mate in ...
13
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6answers
848 views

Are there any puzzle/solitaire games based on chess?

First, I apologise for asking a question that's not strictly in the right Q&A format; I'm hoping there are quality answers anyway. Are there any puzzle or solitaire games based on chess? By this ...
26
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2answers
3k views

How many squares can 4 queens control?

Though there is no strict mathematical proof, it has been shown via brute-force that no arrangement of 4 or fewer queens can control every square on a standard 8x8 chessboard. So, out of the 64 ...
35
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4answers
14k views

How many chess pieces does it take to “cover” all spaces on a chessboard?

Given an 8x8 chessboard, your goal is to "cover" each space on the board with the fewest possible number of pieces. A space is "covered" if there is a piece on it, or if a piece on the board can be ...
30
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2answers
4k views

How many queens can be on a chessboard without attacking each other?

What is the maximum number of queens that can be placed on a standard 8x8 chessboard such that no one of them is capable of attacking any of the others in a single move?

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