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.

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21
votes
4answers
3k views

The Knight and the Maze

Shown below is a grid of blue and yellow squares with a knight in the upper left hand corner and green square in the lower right hand corner. Your task is to guide the knight from its starting ...
21
votes
6answers
878 views

Fit the most chess pieces on a board with these rules

Fit the most pieces on a chess board. You are only allowed to place Rooks, Knights and Bishops. The number of rooks, knights and bishops must be approximately equal (specifically, the number of rooks,...
20
votes
1answer
966 views

The Black Prowler (chess)

The Prowler is a powerful piece in an alternative version of chess. In the standard board depicted below, we have an initial setup of white pieces and just one black prowler. The special rules are ...
17
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2answers
2k views

Fairy Chess #1- The Mastermind

(Fairy chess is a general term for any kind of chess variant with pieces that aren't used in the normal game) (Inspired by The Black Prowler (chess)) In this variant, white has their entire army ...
13
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3answers
814 views

Reconstruct a game of Loser Chess

In loser chess, the rules are the same as in classical chess but for the following points: The king behaves just as any normal piece and can be captured. There is no check, no checkmate, and the king ...
27
votes
2answers
2k views

Knights on a Torus

An 8×8 chessboard is in the shape of a torus. (This means that the board "wraps around" - you can go left from a2 and come out on h2, for instance. It also works vertically - you can go up from f8 and ...
21
votes
2answers
2k views

A Warped Chess Maze

A chess maze is a kind of chess puzzle where: Only one side moves (and that side usually only has one piece). That side must capture a piece with every move. The goal is to capture all of ...
18
votes
3answers
1k views

Where are the Wazirs?

A wazir is a fairy chess piece that moves like a rook, but can go only one square.                   &...
18
votes
1answer
1k views

Megan mated by a king move

"Been playing some chess with my husband recently", my friend Megan began, as we sat with our drinks in Coffee Monarchy. "How'd you get on?" I asked. "Didn't get off to a good start, I'm afraid. In ...
15
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3answers
804 views

Highest number of mates

In chess, what position has the highest number of checkmates in 1 move for a given side? You can have as many of each piece as you want, except for the king (you get exactly one). Bishops can be same ...
14
votes
1answer
1k views

A delve into extraordinary chess problems: Self-Stalemate 1

(This puzzle series is continued here) I found a book that must have been given to me thirty years ago called The Book of Extraordinary Chess Problems: 120 Unusual Puzzles by Stephen Addison. It's ...
12
votes
1answer
875 views

Horde of bishops

This has got to be the coolest chess puzzle I have ever seen. Shamelessly stolen from here (Which is actually linked from the help center, which is how I found this) which links here. I don't believe ...
8
votes
3answers
602 views

One-sided chess: Can you stalemate yourself?

You sit down to play a game of chess. Your side has the white pieces, arranged in their regular starting positions. One problem: your opponent has left, and has taken all the black pieces! Can you, ...
8
votes
3answers
935 views

Possible pawn combinations

This may seem simple, but I have a problem calculating it. It may be because it's Monday morning. How may possible valid combinations of one color pawn (white or black, your choice) positions are ...
7
votes
2answers
523 views

Don't bully your little sister at chess

This puzzle was inspired by @RewanDemontay's puzzle De-zephyr The Solution!. Rewan kindly granted me permission for making this puzzle and citing his as my source of inspiration. I thought of naming ...
33
votes
3answers
5k views

Mate in one with NO PIECES?

The following pictures depict chess positions one move before white checkmated black: The problem is, I seemed to have completely lost which pieces each letter/number represents. All I know is that ...
30
votes
5answers
3k views

Biggest army on a chessboard

Reminder: Everybody knows that we can place 8 queens in a chessboard without threatening each other (see here). Same reasoning can be applied for knights, bishops, rooks and kings. Giving ...
27
votes
7answers
8k views

Two Knights, two Bishops, two Rooks and two Kings on a 4x4 chessboard

Place two Knights, two Rooks, two Bishops and two Kings on a 4x4 chessboard, so that: 1) The Kings are not attacked at all. 2) All other pieces are attacked exactly once. Ignore color, so every ...
20
votes
3answers
502 views

Help Black slide the blocks to solve this chess problem

Here's a chess problem which plays very like a sliding-block puzzle, hence the rather unusual tag combo. Ljubomir Ugren 2nd Prize, Mat, 1976; John Nunn, Solving in Style, no. 183 sh#19 To explain ...
12
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5answers
4k views

Copycat chess is back

This puzzle is inspired by and has similar rules to the series of puzzles by Sleafar. Definition. A copycat chess opening is a sequence of moves starting from the conventional starting position, ...
10
votes
1answer
642 views

Chess Pawn Puzzle

What is the least required number moves to be played to arrive on the position shown above ? Note: no illegal moves.
10
votes
1answer
461 views

How many total checkmates can you possibly make against the enemy king?

Just an interesting idea for a puzzle that I had So, I decided to see how many possible checkmate I could theoretically make, in a legal position that can be legally reached. Always assume that the ...
2
votes
2answers
76 views

The Torn Score Sheet- #2

I really enjoyed the reaction to my previous puzzle, The Torn Score Sheet, and I'd like to do another one. This one's a little shorter and easier, and once again it's White's moves only. Good luck! ...
16
votes
2answers
1k views

The Erasmus rook tour

Professor Erasmus has found a special way of moving a rook across a standard $8\times8$ chessboard that he modestly calls the "Professor-Erasmus-rook-tour". The professor claims that in this tour, ...
10
votes
2answers
845 views

How many bishops to walk across the board

N bishops are placed on a standard 8x8 chess board. Each bishop can move normally but after touching or moving over an square, that square is considered marked. A bishop cannot pass over or land on ...
6
votes
3answers
1k views

A delve into extraordinary chess problems: Selfmate 2

(Continuing the series from here) Here is a second selfmate puzzle (also relatively easy, but beware the traps!). It is by C. R. Flood from 1967, and is puzzle 81 in The Book of Extraordinary Chess ...
5
votes
1answer
726 views

Find the secret phrase in this encrypted image (Part 4)

Welcome to the final stage of Quark's encrypted image puzzle series. I don't really like reusing old tricks so this puzzle will NOT require steganography tricks. There's not much else I can do to a ....
4
votes
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?
4
votes
1answer
637 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 ...
4
votes
2answers
438 views

Equal Chess Control With One Color

Using only the one colour set; Is it possible to setup a chess board where every square on the board is only controlled once. Occupying a square does not mean controlling it. If it is possible, with ...
3
votes
1answer
442 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 ...
3
votes
3answers
255 views

Chess Golf: Peaceful Double Mate

Given the board below, create a checkmate for both sides, ensuring that no pieces are capable of capturing any other piece excluding captures targeted at the kings. Blue moves south and pink moves ...
3
votes
1answer
179 views

All The King's Men-Selfmate In 14 Moves?

I call this "All The King's Men" because lots of White's pieces are needed in this selfmate. It was somewhat of an accident actually, but it is still a pretty position in my opinion. It's whiteto ...
17
votes
1answer
412 views

Chess Enlightenment

Part of the Fortnightly Topic Challenge #35: Restricted Title 1 "White to continue insisting this is a chess board" https://imgur.com/a/6B4vSor When done, circle all squares black and white pieces ...
16
votes
1answer
579 views

Can White Castle? #2

Following on my previous puzzle that was well received (here).Note that this one is a lot shorter / easier, so feel free to participate! Can White Castle?
16
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3answers
1k views

Can White Castle? #3

Since it seems at least some people are enjoying these I'm continuing the series. This one is not quite as elegant, but still interesting. Can White Castle?
13
votes
2answers
548 views

Double n-queen puzzle, with sudoku rules

Put 9 blue queens and 9 pink queens, with rules : If the blue queens removed, each pink queens do not attack each other. If the pink queens removed, each blue queens do not attack each other. Each 3×...
11
votes
3answers
582 views

Checkmate all the kings #3

Following the rules created by Lord of dark in this puzzle, and used here also, the idea is to find the minimum number of consecutive white moves to checkmate all the black kings (in this case 12). ...
9
votes
1answer
259 views

Get 6 pawns in file A or H without promoting

This is wholly inspired by Get 6 pawns in file A or H Is it possible for either white or black to get 6 pawns of the same colour in file A or in file H (you must choose one) without promoting?# If ...
8
votes
1answer
192 views

Reconstructing A Chess Game #4

My five years old pupil Magnus is really on fire ! After three wins in the first, second and third games, he is playing White today in round 4 against one of the tournament's favorites (a child who ...
8
votes
3answers
475 views

From Knights to Kings on a rectangle

In From knights to kings, we were asked On a NxN chess board $N^2$ knights are placed (one per cell). Each pair of knights, who control each other (i.e. one move away from each other) are friends. ...
7
votes
2answers
2k views

Knights covering a 9x9 chess board

What is the minimum number of knights you need to place on a 9x9 chess board, such that every empty cell is attacked by at least one knight? Here is a similar question for a 10x10 chess board: ...
7
votes
1answer
592 views

Queens on a Board with Two Players

Alice and Bob decide to play a game. Alice goes first. They will take turns placing queens on a chessboard such that the queen is not threatened by any other queen on the board. Both players play ...
7
votes
2answers
698 views

Solitaire Chess- Round 2

This is another Solitaire Chess puzzle like this earlier puzzle. Rules: Pieces move as in regular chess Every move must be a capture When there is only 1 piece left, you win.
7
votes
4answers
253 views

Discrete Peaceful Encampments: Player 3 has entered the game!

Here's a variation of Discrete Peaceful Encampments: 9 queens on a chessboard (which itself is a variation of Peaceful Encampments). You have 4 white queens, 4 black queens, and 4 red queens. Place ...
6
votes
1answer
173 views

De-zephyr The Solution!

Here's another original chess problem of mine for you all to solve today! In the following position, White wants to stalemate Black even though they can win, for unknown, unclear, unexplained, and ...
6
votes
1answer
408 views

The Knight Checker or Football Chess

Both Players uses 8 Knights on this chessboard game : The Knight Checker. All pieces starts in Rank 1 relative to players. White to move first. The Knight pieces makes regular moves as in a chess game ...
6
votes
3answers
412 views

Two knights and two rooks on a 5-by-5 chessboard

In how many different ways can two knights and two rooks be placed on a $5\times5$ chessboard, so that no piece attacks another piece?
6
votes
1answer
125 views

Attacking queens

Can you place 3 queens on a 6x6 chess board such that they can attack every square? Good luck!
6
votes
2answers
111 views

Piece-drop Mate #3

Piece-Drop Mate Piece-drop Mate #2 Here's a third one and an interesting one at that: Your task is to place a piece on the board as White and checkmate Black. The correct answer is the one which ...