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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k-threats Chinese Cannons Chess: Part 2

Inspired from the N-Queens problem, I here propose you a puzzle from Xiangqi wich is Chinese Chess equivalent, mostly played in Asia. The most different piece from Xiangqi is the cannon. You can ...
4
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1answer
58 views

k-threats Chinese Cannons Chess: Part 1

Inspired from the N-Queens problem, I here propose you a puzzle from Xiangqi wich is Chinese Chess equivalent, mostly played in Asia. The most different piece from Xiangqi is the cannon. You can ...
4
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3answers
180 views

4-coloured queens attacking every opponent queen once

Can you place 6 queens from four different colours (24 in total), such that each queen attacks exactly one queen of each colour? They may attack as many queens of their own colour as these are ignored....
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1answer
86 views

Freedom of many choices

There are 40 possible move options for both White and Black players in the starting position. The 4 knights and 16 pawns all have 2 options. If all the pieces are still on the chessboard, how would ...
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4answers
307 views

3 Colors of Chess Pieces Attacking Each Other Once Each

Yes, it's another "Chess Pieces Attacking Each Other" puzzle. This time we have 3 colors. Your goal is to place as many of the same type of chess piece (excluding pawns since you can't define the "...
6
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1answer
121 views

Most moves by Most number of Pieces

Using one color, White or Black, place as many chess pieces (kings, queens, bishops, knights, rooks, and pawns, or combinations thereof) as you can on a checkerboard so that when the number of pieces ...
2
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1answer
85 views

Footmen And Friends #3: Eviction

Welcome to Episode 3, where we have a strange puzzle for today. Pawns aren't legally allowed on the first and eighth ranks, but today we make an exception for the sake of creating another long but fun ...
13
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1answer
794 views

The Single Digit - a chess riddle

In front of you lies a safe. Within the safe, you are aware, lie the AI-discovered secrets to solving the game of chess - indeed, every one of its complexities, all of its unknowns, implausibly ...
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1answer
89 views

Footmen And Friends #2: Leapfrog

Seeing as the pilot episode was a major success, with an outstanding and correct response from one of our viewers, it’s time for Episode 2. Remember, we show puzzles with kings and pawns only! Those ...
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1answer
158 views

Footmen And Friends #1: A Long Ways Away

Tonight premiers the first show of Footmen And Friends, a show dedicated exclusively to kings and pawns. Let's give these soul-men of chess a chance to shine instead of their big sisters and brothers! ...
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4answers
340 views

Chess pieces attacking exactly N chess pieces

In the spirit of completion and the style of: Discrete Peaceful Encampments: 9 queens on a chessboard Queens attacking exactly one queen Queens attacking exactly four queens Knights attacking exactly ...
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5answers
3k views

Knights attacking exactly three knights

Can you place 14 black and 14 white knights on a standard 8x8 chess board, such that each knight attacks exactly 3 opponent knights? Bonus question: can you do it with 15 black and 15 white knights? ...
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3answers
1k views

How many chess pieces do we have to put at least?

In a $8\times8$ chessboard, a cell is qualified if an adjacent cell (a cell which is on top, left, below, or right of the cell) excluding itself has a chess piece on it. How many chess pieces do we ...
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2answers
926 views

Queens attacking exactly four queens

Can you place 14 black and 14 white queens on a standard 8x8 chess board, such that each queen attacks exactly 4 opponent queens? Good luck! Here is a related question: Queens attacking exactly one ...
7
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2answers
247 views

Where art thou, oh native rooks?

Here’s a tough puzzle for you all today! Given that both White and Black conspired to reach this position as briskly as possible, where standth White’s native rooks (the one from the starting ...
13
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5answers
2k views

Chess pieces attacking exactly once

Inspired by this question. Actually the same but in a more generic manner. What is the maximum number of chess pieces of the same type (e.g. kings, bishops, rooks, knights) which can be placed on a ...
21
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8answers
5k views

Queens attacking exactly one queen

What is the most number of black and white queens that you can place on a standard 8x8 chess board, such that each queen attacks exactly one opponent queen?
7
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2answers
352 views

A Simple Question

May White mate in two? Good luck! Thomas Rayner Dawson, Tidskrift för Schack, 1923
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2answers
140 views

Chess Construction Challenge #4-Excelsior!

It’s been awhile since the last one, so cheers for round four! Given that: It’s White to selfmate themselves in exactly 5 moves, i.e. after White’s fifth move, Black’s only legal move(s) will ...
14
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3answers
1k views

A King's Hamiltonian Tours

a) Place the numbers 1 to 25 in the cells of a 5 x 5 board in such a way that consecutive numbers occur in adjacent cells either vertically, horizontally, or diagonally, and so do cells with numbers 1 ...
8
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2answers
322 views

The peasant atop the world

Mate in four, White is in glee But all is not as you see For it takes a certain trick A broken rule to break you must pick Tell me the one rule and the grand solution And points you shall earn ...
6
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0answers
184 views

Catching up to my foe

I had once made a piece of wonderful art Until then it had been a century's vain of work Spent inside those Russian winter days At last made in the early eighties But a friend of mine had recently ...
8
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1answer
614 views

One piece of a destroyed chess board

Once I met a friend and he told me the following story: I recently cut my wooden 8x8 chess board into different rectangular pieces along the edges. Each square of the chess board has a length of one ...
2
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1answer
209 views

A challenge-find the shortest solution!

I come here with the challenge today-find the shortest solution! Recently, I set out to created the longest helpmate possible, not caring for legality or duals I have created this monster as a result....
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1answer
531 views

White to mate in 2

This is a cryptic crossword puzzle. Clues are normal, however some entries clash with one another. Each such clash is resolved by adding the clashing letters using the standard A1-Z26 numerology, ...
14
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3answers
2k views

Only one square for the white king

Consider this position. It is white's turn to move. Your job is to place the white king so that white have an overwhelming (winning) advantage. Where is it? Please note that: While Queen usually ...
6
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1answer
879 views

And another one bites the dust

I recently found an extraordinary moremover online today. Have fun finding the solution! It’s White to move and mate in 19 moves! Bonus: Explain the title in relation to the solution! Jozef Lozek, ...
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2answers
252 views

Queens of the Square Sudoku Table

. 6 . | 8 . 3 | . 7 . . . 1 | . . . | . 6 9 7 . . | . . . | . . 5 ---------+---------+-------- . . . | 9 . . | . 1 . . . . | . . . | . . 4 . . 5 | . 1 . | . ...
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3answers
1k views

A Plethora of Puzzled Pawns

Inspired by this question According to FIDE rules, the pawn may move to a square occupied by an opponent’s piece diagonally in front of it on an adjacent file, capturing that piece. So, what's in ...
8
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1answer
269 views

The Newest Cycle

A wonderful new chess problem has appeared lately that is most wonderful. I am here to share it with the world today. But you must solve it in order know about it’s glory! It’s White to move and ...
3
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1answer
170 views

Peaceable Bishops on a 10x10 grid version 2

Can you place 42 bishops with 6 bishops for each of the 7 colors on a 10x10 grid, such that no two bishops of different colors attack each other? Here are some similar questions: Peaceable Bishops ...
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2answers
2k views

Peaceable Bishops on an 10x10 grid

Can you place 22 red, 22 white and 22 black bishops on a 10x10 grid, such that no two bishops of different colours attack each other? Here is a similar question for 8x8 grid: Peaceable Bishops on an ...
7
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2answers
675 views

Peaceable Bishops on an 8x8 grid

Place an equal number of red, white and black bishops on a 8x8 chess grid, such that no two bishops of different colours attack each other. What is the largest number of bishops you can place? Bonus ...
3
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2answers
229 views

Judge this position

An odd chess crime has occurred. The below position, a criminal one, was on the board when it was intercepted. Is it a legal or illegal chess position? Give reasonable proof as to why. You are to ...
4
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1answer
104 views

You Tell Me What To Choose

I found this nice problem in A.C. White’s 1912 book “The Theory Of Pawn Promotion” the other day. Enjoy! It’s White to move and checkmate Black in 5 moves, Don’t forget to explain the title! ...
8
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3answers
708 views

Fewest Chess Pieces

What is the least amount of chess pieces you can use to cover the board with their possible moves and what is their placement? You can only use the pieces that are found on the chessboard (from the ...
11
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2answers
411 views

Checkmate with two knights, but with a twist

It is well known that two knights and a king alone cannot force a checkmate. But that it on a 64-sqaure board. According to Edward Winter’s C.N. 5449, William Shinkman found a way to give mate in a ...
2
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1answer
160 views

With The Last Man

Here’s a nifty little problem. It’s White to move and mate in 12! Don’t forget to explain the title! Johann Christoffel Van Gool, Le Journal de Genève 1979
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4answers
165 views

Hilfe White Rochade!

It’s Black to move. What must Black do in order to help White castle queenside in just 11 moves?
15
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5answers
4k views

Princesses covering an 8x8 chess board

What is the minimum number of princesses you need to place on an 8x8 chessboard so that every empty square is attacked by at least one princess? A princess is a piece from fairy chess that can move ...
7
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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: ...
5
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2answers
634 views

Knights covering a 10x10 chess board

What is the minimum number of knights you need to place on a 10x10 chess board, such that every empty cell is attacked by at least one knight? Good luck!
6
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0answers
221 views

The Rambling Monster

The Rambling Rook is back, but this time, they are a true monster! It’s White to move and reach a winning position in 101 moves. Gijs van Breukelen, Schakend Nederland, 1981, Special Honoring ...
2
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1answer
118 views

In and out, and back in again

With White to move, how long will it take for both sides to cooperate, i.e. this is a helpmate, and checkmate Black? This is based on a problem made made by Otto Blathy. And yes, I know that the ...
4
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1answer
135 views

“Short” And Sweet Math

In the following chess diagram, how many possible chess postions exist? No looking at the solution! Source: P1359129 & Andrew Jonathan Mestel, Retros mailing list, 2/1/2019
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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 ...
6
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5answers
220 views

Chess Construction Challenge #3-The Inverse Babson

Another day, another task! Today's challenge is to construct four positions, with White to move and win, such that: In each position, White's move is to promote to a particular piece, for a position ...
7
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1answer
258 views

A delve into extraordinary chess problems: Selfmate 1

[This series continues from a harder puzzle here and continues in this puzzle] Here we have an easier but still interesting selfmate in 5. This is a puzzle by A. Rubin found in The Book of ...
3
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2answers
183 views

Back in time, in my time, all the time

I present to you all a highly interesting problem that I came across awhile ago on Tim Krabbe’s site. It’s White move and win, i.e. reach a winning positon, in 21 moves. David Gurgenidze & ...
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2answers
320 views

The Marching Tune

And a one, and a two, and a three four five six! Or a one, and a two, and a three four five! From my home right here, To the end way down there! And then I have a choice Of a one, a two, or a ...

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