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.

8
votes
1answer
371 views

The two moves attack

From the chess starting setup position, the twins are playing White. All regular rules are applied except: The Black player wins if he makes it to the 7th move Each twin makes a move, then black ...
48
votes
3answers
5k views

A very unique chess puzzle

Find a legal move for white that does NOT mate in one. Source: by Karl Fabel & was reprinted in Martin Gardner's New Mathematical Diversions from Scientific American (pub. Simon & Schuster), ...
14
votes
4answers
2k views

No More Kings puzzle

Inspired by the game No More Kings Rules: You start as the black piece. Your goal is to capture every piece on the board. The king must be the last piece captured. Captured pieces are used as the ...
14
votes
1answer
664 views

Megan and the chess game

It was a bright sunny day of the sort that we occasionally get in this part of the world (it was the fifth Friday in March). In the park was a van advertising its wares under the banner "Hyper Ices", ...
5
votes
1answer
329 views

Pseudo perplexing puzzle in Puzzlopia

Puzzlopia is the site, from where I got this puzzle. A chess maze - the name tells it all - you have to move the green horse, to the yellow spot. But hey, you're a peaceful horse, so you don't ...
7
votes
3answers
424 views

Smallest number of moves to get to a chess position

Inspired by a recent question posed by Roger Penrose, what is the smallest number of legal chess moves to get to this position?
5
votes
2answers
414 views

Checkmate all the kings #4

Following the rules created by Lord of dark in this puzzle, and used here and here also, the idea is to find the minimum number of consecutive white moves to checkmate all the black kings (in this ...
11
votes
3answers
519 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). ...
8
votes
2answers
502 views

Checkmate all the kings #2

Following the rules created by Lord of dark in this puzzle, the idea is to find the minimum number of consecutive white moves to checkmate all the black kings (in this case just 1). You cannot make a ...
21
votes
5answers
4k views

Why isn't this chess puzzle trivial?

This chess puzzle has become popular in the last few days: But doesn't the white king just need to wander to where the cross is, then move the white pawn forward, then the black bishop takes it and ...
12
votes
1answer
492 views

Forced checkmate in n

I assume most people on PSE know a bit of chess With white to move, this is checkmate (1. Qb7#): That's boring. Let's try something more interesting. With black to move, black can FORCE white to ...
14
votes
1answer
446 views

Rook Game on a Chessboard - Take 2

This question is inspired by this puzzle. You have an $m \times n$ chessboard with $m \le n$. Alice and Bob alternately move the rook (horizontally or vertically, through any number of squares). As ...
3
votes
0answers
363 views

The King's Routes Problem: How many possibilities? [closed]

On a chessboard, a king is to be allowed to move one square at a time: horizontally to the right, vertically downward, or diagonally to the right and downward. Imagine a reduced 4x4 chessboard, with ...
-3
votes
1answer
159 views

How many positions can the queen control? [closed]

Given the size of board (n) and the position of the queen (r,c) how can we calculate the total number of squares which can be controlled by the queen?
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?
2
votes
1answer
433 views

Chess : flawless victory

-warning : true story alert- In my high school years, I used to be in the chess club. One day, my friend taught me the famous 4 move win and told me how it was "the best, the fastest, most awesome ...
12
votes
3answers
1k views

Four free rooks for checkmate

You are given a chessboard with a black king at d5, and four white rooks in your hand. You may place the rooks onto the board one at a time, always checking the king. After each rook placed, the king ...
7
votes
2answers
513 views

Seven Impatient Knights

Source On a $3\times3$ chess board, you must place seven knights according to the following rules: Immediately after placement, the knight must move to an unoccupied spot using a standard knight's ...
4
votes
3answers
440 views

Chess position such that with perfect play, mirrors itself

I was wondering if it's possible to have a chess position in which the (or at least ONE OF THE) OPTIMAL strategy/strategies causes the pieces in the board to mirror in some way, or to rotate with ...
4
votes
1answer
271 views

A Stranger (Chess Sliding Puzzle)

A suspicious stranger lurks in the village. Deal with him before escorting the King to the luxurious safety of h8. White is first to move. Only legal chess moves are allowed. Pawns are not promoted ...
14
votes
3answers
361 views

Pool of Pawns (Chess Sliding Puzzle)

The King has tired of watching the Queen swim in the Pool of Pawns. Help him return to his palace on h8 using as few moves as possible. Only legal chess moves are allowed. Pawns are not promoted on ...
27
votes
3answers
889 views

Rook River (Chess Sliding Puzzle)

The absent-minded king has gotten himself lost. Help him return to his palace on h8 using as few moves as possible. Only legal chess moves are allowed. Pawns are not promoted on the final rank. You ...
3
votes
1answer
257 views

Can the rook pass every square just once?

I had a math teacher in high school who gave us a puzzle to solve. We had to draw a chessboard with one piece that could only move in straight paths. Diagonal movement was forbidden. The goal was to ...
11
votes
3answers
274 views

FootChess 2: The Footening

A friend came to me with the following FootChess position, claiming that White had a way of forcing a win. I'll admit that I regarded the board with skepticism, but as time passed it began to seem ...
41
votes
4answers
5k views

Chess : The Lone King

An arbiter is trying to figure out what happened on the above adjorned game. He only knew that black made 15 moves and there can be more than one line of moves for this. Can you replay at least one ...
46
votes
2answers
2k views

A 16 Clue Sudoku Puzzle (but the kings can't be in check)

An entry in the 19th fortnightly challenge... Above is a 9x9 "chess" board with some pieces already laid out, your goal is to fill the board completely, following standard Sudoku rules (i.e. every ...
7
votes
1answer
214 views

Footchess: Aborted Corner

The ninetieth minute ticks off and we're into extra time. Black sets up for a corner to send the game to penalties, when White realizes that corners aren't actually a thing in this game and makes a ...
30
votes
2answers
1k views

Rubik's Chess Puzzle

This puzzle is part of the Fortnightly Topic Challenge - "Unconventional Tag Fusion". Last week I found out that Puzzle Prime Co. have invented new type of puzzle - Rubik's Chess. The goal is simple -...
24
votes
4answers
1k views

Introducing: FootChess!

Imagine if your chess pieces got bored of their little war games, and decided to play something a bit different. The rules are like Chess except as follows: There is a Ball piece that starts in ...
11
votes
6answers
1k views

Yet Another Simple Chess Rebus

This is an entry to the 19th Fortnightly Topic Challenge Here is a relatively simple chess rebus: Hope it will be answered soon. If not, will add hints. :) To Make it not too broad and take you ...
7
votes
6answers
2k views

A Simple Chess Rebus

This is an entry to the 19th Fortnightly Topic Challenge Here is a relatively simple chess rebus: Hint 1: Hint 2: Hint 3:
8
votes
1answer
637 views

From Russia With Love

MI6 has discovered a recently activated Soviet Sleeper Cell operating in London, they've given the task to you to determine where, when, and how they will strike. You come across the location of ...
16
votes
3answers
893 views

Checkmate all the kings #1

The purpose of this puzzle is to find the minimum number of moves to checkmate all the kings. RULES You are playing as White and you can make as many moves as you want before Black's turn....
10
votes
2answers
330 views

Cover an unusual board with minimum chess rooks

This is an entry for the 17th Fortnightly Challenge. On this unusual board, how many chess rooks minimum needed to attack all tiles, but they are not attacking each other ? Show us the formation. ...
19
votes
3answers
462 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 ...
17
votes
5answers
2k views

Chess puzzle in which guarded pieces may not move

Here's an interesting twist on the theme of chess puzzles, originally from the book Caissa's Fairy Tales by T. R. Dawson. What is the minimum number of moves White needs to win this game from the ...
23
votes
2answers
811 views

The Swedish king and the chessboard

The following puzzle is an old classic, due originally to the great puzzler Sam Loyd, who published the first three parts in 1859; the fourth and fifth parts are variations due to Brian Stewart and ...
7
votes
2answers
399 views

8-queen puzzle on its head

You have 64 chess queens which come in 8 colors, with 8 queens per color. The goal is fill a chessboard with these queens so that any two queens of the same color cannot attack each other, even when ...
10
votes
3answers
465 views

Capturing The Shadow King

White to play (Regular moves apply except for Black King) Black King or Shadow King can move to "any" square that is not attacked by white pieces. It can not capture its opponent. When not in check ...
21
votes
1answer
1k views

Monte Carlo Chess

This is an entry to the 17th fortnightly topic challenge. Chess is an interesting game, but is so unrealistic. In real life, you couldn't tell order your knight to attack an enemy bishop and expect ...
2
votes
1answer
630 views

Closed knight tour on 7x7 board

This is an entry for the 17th Fortnightly Challenge. A knight's tour is a sequence of moves of a knight on a chessboard such that the knight visits every square only once. If the knight ends on a ...
7
votes
1answer
900 views

On 8x8 board, a knight is on the second square of the last row. Only moving upwards, how many routes to the top?

In chess, a knight moves in L-shaped jumps consisting of two square along a row or column plus one square at a right angle. It can only move upwards. How many routes can it take to any square on the ...
8
votes
3answers
427 views

Uncle Jimothy and the Kriegspiel match

Timothy and Kimothy were playing a rather intense game of Kriegspiel the other day. For those of you who don't know... Kriegspiel is a version of chess in which the players are not allowed to see ...
8
votes
4answers
584 views

The Toroidal Chessboard!

Inspired by this awesome question, and this old-but-gold question: What is the minimum number of Chess pieces to dominate(attack all squares) a 8x8 chessboard in shape of a toroid. image courtesy: ...
29
votes
1answer
1k views

Conway's Game of Knights

You have 1 chess piece: The Knight The board: Conway's Game of Life Your goal: Survive Basically, you control a standard chess Knight. You are only allowed to move to cells considered "live" (...
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 ...
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 ...
9
votes
2answers
888 views

Queen & “paralyzed” King vs King

In this puzzle the standard chess rules apply on standard 8x8 board, white has King & Queen and black has his King, the only exception to normal rules is that white is not allowed to move his king....
13
votes
2answers
918 views

Can white's rook and knight without moving white king force stalemate?

This is a recreational chess puzzle question. I'm interested in knowing if white's rook and a knight, can force black lone king to stalemate, without ever using in any way the white king. For simplify ...
4
votes
1answer
275 views

The kids moved when we were gone! What is the likelihood that white is winning?

Two friends were playing a friendly game of chess. The both have young children who they recently taught the rules and they agreed both children could help if they wished. In the position below (...