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48 votes
4 answers
4k views

Can you checkmate a king you can't see?

Motivation If you play bullet chess with time management skills as poor as mine, you often end up in endgame situations that require delivering checkmate by playing several premoves in a row. For ...
noedne's user avatar
  • 19.1k
7 votes
5 answers
973 views

Colorblind Mastermind

This puzzle is part of the Monthly Topic Challenge #7: Board games. Inspired by the incident, I created a variant of Mastermind, although it wasn't actually intended for colorblind people. The main ...
Scratch---Cat's user avatar
4 votes
0 answers
207 views

Police and Thieves

I played this game when I was young, but cannot find it online. It is played on a checkers board (e.g. the black squares of a chess board) between two players P and T. The game goes as follows: P ...
user21820's user avatar
  • 1,256
3 votes
1 answer
239 views

What is the most STAMINA-efficient strategy to escape the well?

You are roleplaying as an adventurer under the direction of a sadistic DM who has just thrown your character down a well. In order to escape, you have unlimited chances at a STAMINA check, difficulty ...
Feryll's user avatar
  • 2,419
2 votes
1 answer
189 views

Peg Solitaire variant: from 48 on an 8x8 board

Looking at David Ahl's Basic Computer Games, one of the programs that caught my eye was One Check. It's like Peg Solitaire, which I've figured, but it's on an 8x8 board with the 4x4 inner bit hollowed ...
aschultz's user avatar
  • 123
5 votes
3 answers
446 views

Playing the Square Chess

On an ordinary chess board (8x8) without any pieces on it as a starting position, two players will alternately place a pawn on any square (unoccupied) so that the first player that form a square (...
TSLF's user avatar
  • 6,728
8 votes
2 answers
674 views

Marbles on a Mancala Board

I would like to introduce an ancient African board game I've just invented. Until someone comes up with a better name, it's called Marble Mancala. The rules are pretty simple: There are two ...
Bass's user avatar
  • 80k
18 votes
2 answers
736 views

What is the optimal strategy for this triangular board game?

I saw a board game somewhere and I want to know the optimal strategy for it. The game is played on a triangular board with 21 slots: The two players, red and blue, take turns to put numbered circles ...
Sweeper's user avatar
  • 381
6 votes
4 answers
1k views

Filling the board with 0s and 1s

You are given a $9\times9$ grid board. You have 40 "$1$"s and 41 "$0$"s. You can put these numbers wherever you want on the board. After that, you will take the sum of the numbers ...
Oray's user avatar
  • 30.5k
7 votes
2 answers
1k views

Hopping Frogs puzzle variant

There is an old puzzle which has various names such as Toads and Frogs, Jumping Frogs, Hopping Frogs, Leap Frog, etc., and which has been asked here before. I'd like to share a variant of this puzzle ...
Jaap Scherphuis's user avatar
8 votes
3 answers
539 views

A game of Connect 4++

This is an entry to the 17th fortnightly topic challenge. Alice and Bob are playing connect four. Bob is tired of losing all the time, so he suggests changing the rules. He wants to drop 2 pieces ...
Kruga's user avatar
  • 3,672
3 votes
2 answers
174 views

Stakes on a table [duplicate]

Two men sat at a square table, each with a very large number of stakes. They had entered a contest of wits, or so they called it. The winner of the contest would be the last person to place a stake ...
Quiquȅ's user avatar
  • 1,456
17 votes
1 answer
1k views

Clear board in Othello (Generalisation)

Based on Clear board in Othello If we have an $2m\times 2n$ Othello board ($m\geq n\geq 2$), and the centre $4$ squares have the usual starting position, then for what all values of $m$ and $n$ ...
ghosts_in_the_code's user avatar
10 votes
1 answer
1k views

Clear board in Othello

Is there a valid set of moves in Othello that allows a win score of 64-0 for either player? And is there record of any such game in the past?
ghosts_in_the_code's user avatar
6 votes
1 answer
672 views

Capture The Stones

This puzzle was created by me as a single-player variation on the game of go. The objective here is simple: capture all 41 grey stones on the board below in the least number of moves. Just like in ...
Allan's user avatar
  • 642
6 votes
1 answer
424 views

Checkers Against The King

The king has invented a new game called King's Checkers. The rules are simple, it's exactly like regular Checkers, the only difference? The king plays first and all his pieces are automatically "king",...
warspyking's user avatar
  • 14.5k
6 votes
1 answer
886 views

2 bishops versus a lone king

There are 4 pieces on the board, the white and black kings, as well as 2 white bishops (on differently colored squares). The only way a stalemate occurs is if the black king is not in check, but ...
ghosts_in_the_code's user avatar
3 votes
3 answers
772 views

Battleship- Part 2

Mason is improving at the game Battleship. He's got this current game in the bag, or so he thinks. His opponent is Richard, whose method for placing his ships is completely random. Each side has 5 ...
JLee's user avatar
  • 19.3k
20 votes
5 answers
5k views

Battleship- Best Next Move

Mason likes the game Battleship, but he doesn't win much. However, Sherry, his opponent, is so confident in her skill and luck that she has agreed to let Mason have his five friends help him. Sherry'...
JLee's user avatar
  • 19.3k
9 votes
3 answers
4k views

Queen chasing a knight (chess pieces)

There is a player who controls only a queen, while his opponent controls a knight. Both pieces start from opposite corners of the board. The aim is to kill the knight, without having your queen killed....
ghosts_in_the_code's user avatar
-3 votes
1 answer
2k views

Connect 4 Infinite

"Attention everyone! It is the final game of the Connect 4 championship! Billy and Sarah have played perfectly so far during this tournament, so in efforts to prevent Player 1 from being able ...
warspyking's user avatar
  • 14.5k
11 votes
2 answers
424 views

No-Connecting-4

Imagine a game of connect 4 where Player1 wins by Player2 connecting 4, and Player2 wins by forcing the board into a filled board without any 4-in-a-rows. A tie happens if Player1 connects 4. Now Let'...
warspyking's user avatar
  • 14.5k
5 votes
3 answers
8k views

Is there any way to 'trap' my opponent on Connect Four?

I am trying to find out if there are any 'optimal' moves in the game, so as to trap my enemy to put his pawns in the place where I need them
Shevliaskovic's user avatar
0 votes
1 answer
299 views

Is there any specific way to play Solitaire?

I am interested in finding out if there is any specific way (algorithm) to play solitaire (not the card game)
Shevliaskovic's user avatar