Difference between revisions of "Worst move puzzles"

From HexWiki
Jump to: navigation, search
(Added another easy puzzle.)
m (Minor copy-edit)
 
(5 intermediate revisions by 2 users not shown)
Line 1: Line 1:
 
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.
 
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 ===
 
=== Puzzle 1 ===
  
By Eric Demer. Red to play the unique losing move.
+
By [[User:Selinger|Selinger]]. Red to play the unique losing move.
  
<hexboard size="5x5"
+
<hexboard size="4x4"
   contents="R d2 d1 B e1 b1"
+
   contents="R a1 b1 b3 B a2 a3 a4"
 
   />
 
   />
  
(Of the 21 empty cells, 20 are winning moves for Red, and 1 is a losing move for Red.)
+
Try it on [https://hexworld.org/board/#4c1,a1a2b1a3b3a4 HexWorld].
  
Try it on [https://hexworld.org/board/#5c1,d2b1d1e1 HexWorld].
+
(Of the 10 empty cells, 9 are winning moves for Red, and 1 is a losing move for Red.)
  
 
=== Puzzle 2 ===
 
=== Puzzle 2 ===
  
By [[User:Hexanna|Hexanna]]. Red to play the unique losing move.
+
By [[User:Selinger|Selinger]]. Red to play the unique losing move.
  
<hexboard size="6x6"
+
<hexboard size="4x4"
   contents="R a5 d3 B d1 f4"
+
   contents="R a3 B d2"
 
   />
 
   />
  
Try it on [https://hexworld.org/board/#6c1,a5f4d3d1 HexWorld].
+
Try it on [https://hexworld.org/board/#4c1,a3d2 HexWorld].
  
 
=== Puzzle 3 ===
 
=== Puzzle 3 ===
  
By [[User:Selinger|Selinger]]. Red to play the unique losing move.
+
By [[User:Demer|Eric Demer]]. Red to play the unique losing move.
  
This puzzle is much easier than puzzles 1 and 2.
+
<hexboard size="5x5"
 
+
   contents="R d2 d1 B e1 b1"
<hexboard size="4x4"
+
   contents="R a1 b1 b3 B a2 a3 a4"
+
 
   />
 
   />
  
Try it on [https://hexworld.org/board/#4c1,a1a2b1a3b3a4 HexWorld].
+
Try it on [https://hexworld.org/board/#5c1,d2b1d1e1 HexWorld].
  
 +
=== Puzzle 4 ===
  
 +
By [[User:Hexanna|Hexanna]]. Red to play the unique losing move.
  
=== Puzzle 4 ===
+
<hexboard size="6x6"
 +
  contents="R a5 d3 B d1 f4"
 +
  />
  
By [[User:Selinger|Selinger]]. Red to play the unique losing move.
+
Try it on [https://hexworld.org/board/#6c1,a5f4d3d1 HexWorld].
  
This one is also relatively easy.
+
=== Puzzle 5 ===
  
<hexboard size="4x4"
+
By [[User:Hexanna|Hexanna]]. Red to play the unique losing move.
   contents="R a3 B d2"
+
 
 +
This is a difficult puzzle.
 +
 
 +
<hexboard size="7x7"
 +
   contents="R a6 e3 B b6 g4"
 
   />
 
   />
  
Try it on [https://hexworld.org/board/#4c1,a3d2 HexWorld].
+
Try it on [https://hexworld.org/board/#7c1,a6b6e3g4 HexWorld].
 +
 
 +
== See also ==
 +
 
 +
* [[Solutions to worst move puzzles]]
 +
 
 +
[[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