We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [chess]

A puzzle related to the game of chess. Questions about chess which aren't puzzles are off-topic but can be asked on Chess Stack Exchange.

Filter by
Sorted by
Tagged with
5
votes
1answer
956 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
votes
1answer
253 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
votes
1answer
445 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
votes
3answers
973 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
votes
1answer
469 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
votes
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 ...
10
votes
1answer
665 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. ...
9
votes
1answer
794 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 ...
8
votes
1answer
2k views

What is the position in 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, the following puzzle (from here): has white to play and ...
11
votes
4answers
717 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
votes
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 ...
30
votes
4answers
12k 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 ...
31
votes
2answers
3k 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?