Questions tagged [chess]

A puzzle related to chess, a two-player board game with white and black pieces of varying ranks.

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2 votes
1 answer
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Helpmate part 2

This is the second part of Fastest way to helpmate You have been given the task to checkmate/helpmate black in fastest possible way in following ways: Pawn promoting to only queen Pawn promoting to ...
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2 votes
2 answers
609 views

Fastest way to helpmate

What is the fastest way to checkmate/helpmate white(A helpmate is a type of chess problem in which both sides cooperate in order to achieve the goal of checkmating Black/White) in this given position? ...
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5 votes
1 answer
406 views

Find the best plan for White

Here is a chess position to be solved. It is technically illegal, but for the sake of the puzzle, we'll ignore that. Find the plan for White that wins the game, with proper reasoning. FEN: 1rkr1b1b/...
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5 votes
1 answer
168 views

Reverse Puzzling 8 - Another Chess One with an Allumwandlung

[Continued thematically from here] George grinned at the sight of the chess board. "What have we here?" "This was the first two-mover to show Allumwandlung using only this many pieces,&...
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1 vote
0 answers
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cypher puzzle with chess board

I found this puzzle here on reddit's cipher community The answer could be a word or sentence. I thought ABCDE meant the order 12345 and each square could be a letter.
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9 votes
2 answers
487 views

An overconfident grandmaster

Suppose you are playing a grandmaster with the White pieces and you are on the verge of losing the game. The overconfident grandmaster offers you a bet: You will make two consecutive moves with White ...
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3 votes
1 answer
339 views

Escape the labyrinth

Devise a concrete winning plan for White. The title will help. En passant is not possible. FEN: 7k/8/6p1/3p1pPp/p1pPp1p1/PpPpPpPp/1P1B1P1B/3NRKQN w - - 0 1 This problem is based on a similar concept ...
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4 votes
1 answer
242 views

Move and Remove

From the initial position Black makes a regular move to an unoccupied square, and removes any piece from the board. Then repeats, alternately making a move and a removal. The objective is for Black to ...
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4 votes
2 answers
291 views

Merging knights and blocking rooks

A chess grid is filled with knights and rooks as shown in the following diagram. Each turn you can issue a move in one of 8 directions available to a chess knight. This will move all the knights in ...
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1 vote
1 answer
171 views

Jumping knights on a 5x5 grid

Two players (black and white) alternate in making moves. Each turn a player must use one of his knights to capture an opponent's knight. Knights use standard chess moves. It is black's turn in the ...
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6 votes
1 answer
413 views

Jumping knights on a 4x4 grid

Two players (black and white) alternate in making moves. Each turn a player must use one of his knights to capture an opponent's knight. Knights use standard chess moves. It is black's turn in the ...
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8 votes
2 answers
570 views

Merging knights

A standard 8x8 chess grid is filled with knights. Each turn you can issue a move in one of 8 directions available to a chess knight. This will move all the knights in that direction. If a knight would ...
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5 votes
2 answers
521 views

A Complicated Exercise In Addition

Another day, another walk down to the cafe. I was waiting in line for my coffee, wondering what the barista could do this time to make my name look whack. But as I waddled in line, a curious site ...
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7 votes
1 answer
194 views

A Knight's Tour

A lonely chess knight stands on a cell somewhere in the first row of a 3x13 board, and elsewhere there is a castle. The knight takes a tour of all the remaining 37 cells of the board, missing just the ...
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12 votes
1 answer
782 views

Wordle Pictionary!

Inspired by the new game of Wordle, I have created a new type of puzzle combining Wordle and Pictionary. The left image represents a phrase of six five-letter words. Normal Wordle rules apply: Green ...
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  • 6,549
2 votes
2 answers
212 views

Quickest chess stalemate with Queens exchange

Continuing my previous puzzle. If both players cooperate, what is the quickest stalemate in chess that includes a Queens exchange, in a legal game?
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3 votes
2 answers
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Quickest mate with Queens exchange

If both players cooperate, what is the quickest mate in chess that includes a Queens exchange, in a legal game?
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7 votes
1 answer
224 views

Smallest number of moves to reach a "reverse checkers" position

A "reverse checkers" position is a position where every piece for one player is on one colour and every piece for the other player is on the other colour. Consider this position, for example:...
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13 votes
1 answer
383 views

Fairy Impostors

Fairy Chess is a genre of chess composition where the rules of normal chess are altered. This is typically done by adding new pieces (e.g. borrowing the cannon from Xiangqi) or changing the way ...
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-1 votes
1 answer
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A Complex Dash To Stalemate

For today's contribution to PSE, I present a sliding block puzzle! I have a series-helpstalemate in 26 for you all with a relevant question attached. The illegal position is intentional. Objective #1: ...
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9 votes
1 answer
158 views

Camel-eon 8x8 tour

This question is inspired by the Chameleon 8x8 tour puzzle. A knight is a chess piece that moves by jumping to a square $\sqrt 5$ units from its location. (The more conventional way to put it is that ...
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14 votes
3 answers
1k views

Chameleon 8x8 Tour

It is known that a knight can visit every cell of a 8x8 chess board exactly once. Here we consider the same task for a chameleon chess piece. This piece begins as a knight, then it transforms into a ...
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10 votes
3 answers
471 views

Compass: a chess puzzle

]7=6QW> ?@ W=6P ==Ik ]P@QQ67@PN [RQ2N 69R P@7 WPP@$ Black to move. Are they winning?
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36 votes
6 answers
4k views

White is winning here. But how?

White to move. This puzzle is composed by myself!
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7 votes
2 answers
643 views

Inferrence strategies for hidden pieces on a chessboard

This is a potentially off-topic question, however, the reason I'm asking it here is in the hope of gaining the perspective of puzzlers in tackling such a problem. That is, I am more interested in the ...
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0 votes
2 answers
226 views

Checking Centered Knights

The standard chess end game position above most probably results in a draw. On his turn White player placed the bishop to f5 and say "checks" (board pieces as shown). How can the Black ...
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6 votes
4 answers
282 views

Pawns and kings, what is the optimal play for white?

White to move. Source: wu riddles
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2 votes
1 answer
678 views

Can you check the results of this chess match?

As the sun broke the horizon I could feel the cold breeze on my face mixing with the warming city air. Like most mornings, I could hear Mr. and Mrs. Shamming discussing their afternoon plans during ...
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4 votes
2 answers
434 views

Longest chain of checks and captures

On a standard size chessboard, with white to move, make a configuration of chess pieces and moves, so that with every move by white the black king repeatedly becomes checked. With every move black ...
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11 votes
3 answers
1k views

Attacking diagonal queens

What is the least number of queens you need to place on the main diagonal of a 8x8 chess board such that every square is under attack?
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5 votes
1 answer
224 views

Can you destroy the kingdom without getting caught?

You are a shapeshifter that takes on the form of their victims and you've infiltrated the opposing kingdom's ranks, disguised as a lowly pawn . The opposing king has you presently assigned to the ...
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6 votes
1 answer
154 views

White to play and mate in 3 - adapted from real game

This is adapted from a real game between GMs where white played the King's Gambit. I changed the position slightly (moved one piece) because there were actually two mates available, with one more ...
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0 votes
1 answer
95 views

The Knight's Trial [duplicate]

You've most likely heard of the eight queens puzzle, right? Where you have to place n chess queens on an n * n board so that no queens attack each other (boy, those must be some very angry monarchs!)? ...
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6 votes
1 answer
232 views

Jumping leprechaun on a grid

A jumping leprechaun is a special chess piece that lives on an infinite square grid. On the first turn it moves one cell horizontally (left or right) and two cells vertically (up or down). On the $n$-...
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8 votes
2 answers
307 views

What pieces does White need to beat Black's veto?

Consider the following chess variant: before each of White's moves, Black chooses one move which White is not allowed to make. (The rules for which positions constitute checkmate are unchanged - Black ...
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  • 614
6 votes
1 answer
413 views

The Novice Chess Team that Won Every Match of the Season

Devious High School had a newly formed chess team that played against all the other high schools in the area this year. These matches are played with a 5-player team who, at a match, sit next to each ...
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2 votes
3 answers
496 views

How old is Grandfather?

This position has been used in hundreds of chess problems for various reasons by a plethora of problemists over many, many decades. It is known as "Vielväterstellung" in German, or "The ...
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5 votes
3 answers
1k views

One-sided chess: Self stalemate revisted

An old self-stalemate puzzle has been popping up in my feed lately. I was unable to do better than the existing answers, so I created a different puzzle from it. For reference: One-sided chess: Can ...
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1 vote
1 answer
187 views

Puzzle storm to infinity

I have been playing Puzzle Storm on Lichess lately. Essentially it involves solving chess puzzles within a given time limit. Additionally, the player gets a time bonus for a certain number of moves. ...
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3 votes
3 answers
334 views

Chess Construction Challenge #9: Two Eggs & A Flood

I have an odd idea for this challenge. It involves a very specific proof game construction. So pay attention! Given that: White and Black cannot move more than one pawn each throughout the entire ...
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3 votes
2 answers
182 views

Chess Construction Challenge #D: 8 moves

Since I "burnt" the complete question elsewhere, let's start with "D" (I counted up in hex) and 8 moves. The position in the answer there can be improved by far! OK, to ...
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3 votes
1 answer
144 views

Chess Construction Challenge #8: Three Times The Charm

On a chessboard, a piece has a set number of legal moves. It can range from 0 to 27. However, this amount can also restricted. My previous questions have covered n=1 and n=2, it is time for n=3! Given ...
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6 votes
1 answer
590 views

Flat share share

This is a sequel to Gentrification in Chessshire. Due to the febrile state of the Chesster housing market you and your flat mates are forced to rent out half your place to another group of sharers. ...
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7 votes
3 answers
527 views

Chess Construction Challenge #7: Double The Fun

Many thanks goes to @Retudin in a comment on my last question for this idea. In a chess position, pieces can be restricted as to how many moves they can legally make in theory. Since my previous ...
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9 votes
5 answers
1k views

Chess Construction Challenge #6: The One Move Royale

In chess, it is possible for a piece to have only one legal move. For example, in this position, the Black king can move only to h2. Given that: All 32 pieces are available for use. Construct: A ...
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-4 votes
1 answer
144 views

Room Puzzle, containing chess and ciphers. Can someone help? [duplicate]

I Have to force checkmate black king in two moves only its white turn. And the keypad Someone also asked this question here like a month ago, but the answer was wrong i tried alot of things but ...
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9 votes
2 answers
358 views

Gentrification in Chessshire

You can skip the back story and directly jump to the question. Capitalism has arrived in suburban Chesster the community most famed for The Game, and with a vengeance. Rents have trebled in less than ...
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16 votes
1 answer
358 views

Chess A Knight's Journey

You'll need to know about: A game that has existed for over 1500 years A game that doesn't exist ♞ → I → II → III → ... Answer = Xxxxxxxxx
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1 vote
2 answers
122 views

Checkmate Puzzle [closed]

I had a chess position today, in which my last position had 5 possible moves to checkmate. This seemed like a lot to me, and I immediately thought of the puzzle: Which position would yield the maximum ...
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4 votes
0 answers
263 views

One vs many. Can white force a draw?

On an infinite chessboard there's a single white king and N black kings. The nearest black king must be K moves away from the white king. Given N, white dictates the value of (finite) K, then black ...
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