Difference between revisions of "Worst move puzzles"

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Normally, the goal of a puzzle is to find a/the best move(s), or a/the winning/moves. ​ However, this puzzle is for the opposite:
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Normally, the goal of a puzzle is to find the best move(s) or a winning move. The puzzles on this page have the opposite goal: to find the only ''losing'' move.
  
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The puzzles are approximately sorted in increasing order of difficulty.
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=== Puzzle 1 ===
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By [[User:Selinger|Selinger]]. Red to play the unique losing move.
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<hexboard size="4x4"
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  contents="R a1 b1 b3 B a2 a3 a4"
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  />
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Try it on [https://hexworld.org/board/#4c1,a1a2b1a3b3a4 HexWorld].
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(Of the 10 empty cells, 9 are winning moves for Red, and 1 is a losing move for Red.)
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=== Puzzle 2 ===
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By [[User:Selinger|Selinger]]. Red to play the unique losing move.
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<hexboard size="4x4"
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  contents="R a3 B d2"
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  />
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Try it on [https://hexworld.org/board/#4c1,a3d2 HexWorld].
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=== Puzzle 3 ===
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By [[User:Demer|Eric Demer]]. Red to play the unique losing move.
  
 
<hexboard size="5x5"
 
<hexboard size="5x5"
Line 6: Line 33:
 
   />
 
   />
  
Red to play the only _LOSING_ move.
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Try it on [https://hexworld.org/board/#5c1,d2b1d1e1 HexWorld].
  
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=== Puzzle 4 ===
  
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By [[User:Hexanna|Hexanna]]. Red to play the unique losing move.
  
(There are exactly 21 empty cells. ​ 20 of them are winning moves for Red, and 1 of them is a losing move for Red.)
 
 
Here are two more puzzles. Red to play the unique losing move.
 
 
<hexboard size="6x6"
 
<hexboard size="6x6"
 
   contents="R a5 d3 B d1 f4"
 
   contents="R a5 d3 B d1 f4"
 
   />
 
   />
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Try it on [https://hexworld.org/board/#6c1,a5f4d3d1 HexWorld].
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=== Puzzle 5 ===
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By [[User:Hexanna|Hexanna]]. Red to play the unique losing move.
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This is a difficult puzzle.
  
 
<hexboard size="7x7"
 
<hexboard size="7x7"
 
   contents="R a6 e3 B b6 g4"
 
   contents="R a6 e3 B b6 g4"
 
   />
 
   />
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Try it on [https://hexworld.org/board/#7c1,a6b6e3g4 HexWorld].
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== See also ==
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* [[Solutions to worst move puzzles]]
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[[category:Puzzle]]

Latest revision as of 20:19, 15 August 2024

Normally, the goal of a puzzle is to find the best move(s) or a winning move. The puzzles on this page have the opposite goal: to find the only losing move.

The puzzles are approximately sorted in increasing order of difficulty.

Puzzle 1

By Selinger. Red to play the unique losing move.

abcd1234

Try it on HexWorld.

(Of the 10 empty cells, 9 are winning moves for Red, and 1 is a losing move for Red.)

Puzzle 2

By Selinger. Red to play the unique losing move.

abcd1234

Try it on HexWorld.

Puzzle 3

By Eric Demer. Red to play the unique losing move.

abcde12345

Try it on HexWorld.

Puzzle 4

By Hexanna. Red to play the unique losing move.

abcdef123456

Try it on HexWorld.

Puzzle 5

By Hexanna. Red to play the unique losing move.

This is a difficult puzzle.

abcdefg1234567

Try it on HexWorld.

See also