Skip to main content
32 votes
Accepted

Alice and Bob invent a game

So building on kristinalustig's answer they are indeed playing The cards are assigned as follows Alice's first turn Bob's first turn In particular Alice's next move produces Bob's next move ...
hexomino's user avatar
  • 137k
30 votes

Shortest game of Monopoly

If you are trying to lose the game as quickly as possible then you can do it in 1 turn and 2 rolls of the dice. This is using the UK version as I'm not sure about the US one. Roll 1: Roll 2 (Because ...
William Pennanti's user avatar
28 votes
Accepted

Magic Maze Puzzle

Okay. THAT. WAS. INCREDIBLE! It took me two solid hours of work to solve and even longer to write and draw it all up here - hopefully it'll be worth it! To start us off, here is the final maze layout ...
Stiv's user avatar
  • 145k
28 votes
Accepted

The body in the cellar

The host was murdered: Because:
fljx's user avatar
  • 16.6k
27 votes
Accepted

Chess puzzle in which guarded pieces may not move

The answer:
Going hamateur's user avatar
24 votes
Accepted

What's the maximum number of pegs you can leave on a 15-hole triangular peg solitaire?

It can be done in jumps. Here is the solution: If you start with the hole elsewhere, you need more moves to reach an end position. Here are all the optimal end positions for each case, but without ...
Jaap Scherphuis's user avatar
24 votes
Accepted

Two-Move Chess Game

fblundun's user avatar
  • 1,536
22 votes
Accepted

A game of red and black

The game is and the result is
Deusovi's user avatar
  • 147k
20 votes
Accepted

8-queen puzzle on its head

On my puzzle website there is an old puzzle called Hoo-Doo which is essentially this same puzzle. Some other board sizes:
Jaap Scherphuis's user avatar
20 votes
Accepted

Let's continue our Monopoly game

It is currently: because All that means it is now the
dcfyj's user avatar
  • 7,756
20 votes

Riley Riddle in the game

The Riley Riddle resolves to clue the board game: My first can hold flags. My second lasts three months. My last is your attention. My whole is the game you're playing. We're not done yet. ...
Stiv's user avatar
  • 145k
19 votes

A Boyfriend's Mysterious Message

monoRed's user avatar
  • 474
19 votes
Accepted

Four free rooks for checkmate

First rook is placed at any of Second rook is placed The third rook is placed And then the fourth rook A crappy example game below:
Sconibulus's user avatar
  • 19.7k
19 votes
Accepted

Unfinished Snakes and Ladders

The other guys already got the answer. (Maybe not with completely airtight arguments, but nevertheless.) The explanations would be a lot easier to follow if they had pictures, so here's one: Legend: ...
Bass's user avatar
  • 77.7k
19 votes
Accepted

A Drink and a Game

After revisiting this puzzle time and time again without an insight striking, I think I finally have it! What was ordered to drink? Why? Well, first of all it's vital to realise that the board game ...
Stiv's user avatar
  • 145k
17 votes
Accepted

Chain Puzzle: Tabletop Games #10 – Risky Finale

The clue answers: Sorted by group (and given in text form): And when you take the given pair of letters, and read those pairs of letters in clue order, it spells out the message: The full journey ...
Deusovi's user avatar
  • 147k
17 votes
Accepted

But She Don't Care

These board-gamers are playing: The board at the end of the game looks like this: Who wins the game? A final few Easter Eggs:
Stiv's user avatar
  • 145k
16 votes

Alice and Bob invent a game

I spent quite a while working on this yesterday and today. I only have a partial answer. I started with the assumption that I chose this assumption because: Given this assumption, I tried: However:...
kristinalustig's user avatar
  • 3,402
15 votes

Clear board in Othello (Generalisation)

Here is one way you could begin to prove that the board can be cleared for all values of $m$ and $n$. Proof by induction. [incomplete] Case 1: $k = 1$ Here we take k = 1 to mean the smallest ...
Tim's user avatar
  • 1,018
15 votes
Accepted

Chain Puzzle: Tabletop Games #08 - Targui, or not Targui

From the facts about the first grid My first guess of the genre was Naturally, the next step would be It is not very hard, if we focus on the number 5: Therefore, Now to the second grid. With ...
Bubbler's user avatar
  • 15.6k
14 votes

What is the minimum-sized Blokus board which can contain all pieces?

Wow, that sure is tight. And yes, even though it doesn't look like it at the first glance, the I and T pentominoes are legally connected to each other :-) This took surprisingly long to find and (...
Bass's user avatar
  • 77.7k
13 votes
Accepted

Least amount of moves is required

Using a computer to attempt to beat my original solution I found some Here is one: I reduced the search space by not allowing stones to moves to (although they can jump via) the spots marked with an ...
Jonathan Allan's user avatar
13 votes
Accepted

Monte Carlo Chess

I initially gave a slightly rambling stream-of-consciousness answer, which I have preserved below in case anyone prefers that. Here is a slightly slicker one. (It is the same argument, just possibly ...
Gareth McCaughan's user avatar
13 votes
Accepted

Capturing The Shadow King

OK, I barely made it with 10 moves, but it seems pretty hard to prove this is optimal (and I suspect the answer may be lower). The last move you make is Rh8, which will be the mate.
Puzzle Prime's user avatar
  • 6,964
13 votes

Unfinished Snakes and Ladders

It is: Reasoning:
Evan Capstick's user avatar
13 votes

Advantage, Black!

This should do it: White is in zugzwang, so black has
Bass's user avatar
  • 77.7k
12 votes
Accepted

Othello - Most number of legal moves in a given turn

The upper bound limit is likely to be quite a bit lower than 60. For the purposes of this I will assume that you are WHITE. In order for you to have a valid move in Othello, you need a line formed ...
Gordon K's user avatar
  • 10.6k
12 votes
Accepted

Checkmate all the kings #1

I got a quick answer but not sure how good it is.
stack reader's user avatar
  • 9,840
12 votes

Let's continue our Monopoly game

This solution is no longer valid. The original posting of the problem had a typo (and lacked the restriction of "no auctions"); with the typo, at least one auction was required to solve, and this ...
Rubio's user avatar
  • 41.7k

Only top scored, non community-wiki answers of a minimum length are eligible