Difference between revisions of "Puzzles"

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(Puzzle 6: Fixed position orientation (incorrect edges) and added a link and a comment)
(Puzzle 7: Added a puzzle)
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Note that this position is [[Equivalent patterns|equivalent]] to the position with the pieces at a5 and a6 removed.  This could arise in response to the [[Small_boards#Winner_depending_on_the_first_move|winning opening move a4]].
 
Note that this position is [[Equivalent patterns|equivalent]] to the position with the pieces at a5 and a6 removed.  This could arise in response to the [[Small_boards#Winner_depending_on_the_first_move|winning opening move a4]].
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=== Puzzle 7 ===
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Red to play and win. Red has exactly one winning move.
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<hexboard size="6x6"
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  coords="show"
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  contents="R a3 b2 B d1 e1 f1"
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  />
  
 
== See also ==
 
== See also ==

Revision as of 05:23, 29 January 2022

Solving puzzles is a very good way of becoming a stronger player. Solve as many as possible! And feel free to post your own puzzles here.

Piet Hein's puzzles

See article Piet Hein's puzzles

Claude Berge's puzzles

See article Claude Berge's puzzles

Bert Enderton

Puzzle 1

Red to play and win.

abcdefg1234567

Puzzle 2

Red to play and win.

abcdefg1234567

Puzzle 3

Red to play and win.

This is a very difficult puzzle whose complete solution is extremely complex.

abcdef123456

Puzzle 4

Red to play and win.

abcdefg1234567

Other authors

Puzzle 1

By John Tromp

Blue to play and win.


abcdefghij12345678910

Puzzle 2

By lazyplayer. Blue to play and win.

abcdefg1234567

Puzzle 3

By David J Bush. Taken from a game on Playsite in 2003. Red to play and win.

abcdefghij12345678910

Source: this Little Golem forum thread.

Puzzle 4

Designed by Door1, helped by David J Bush. Inspired by a game on Kurnik in May 2005. Blue to play and win.

abcdefghij12345678910

Source: this Little Golem forum thread.

Puzzle 5

Designed by Arek Kulczycki. Game where both players play very close to perfect. Move 7.b9 was the first mistake, however it was very hard to refute it.
Blue to move and win (there is just 1 winning sequence).

abcdefghijk12345678910114153627

Puzzle 6

From Ryan B. Hayward, "A puzzling Hex primer" (https://webdocs.cs.ualberta.ca/~hayward/papers/puzzlingHexPrimer.pdf). Red to play and win.

abcdef123456

Note that this position is equivalent to the position with the pieces at a5 and a6 removed. This could arise in response to the winning opening move a4.

Puzzle 7

Red to play and win. Red has exactly one winning move.

abcdef123456

See also

Cameron Browne offers a lot of original puzzles in his book Hex Strategy Making the Right Connections

Matthew Seymour has created a website with 500 interactive Hex puzzles at http://www.mseymour.ca/hex_puzzle/hexpuzzle.html

Ryan Hayward and Bjarne Toft include several sets of puzzles in their book Hex: The Full Story, including 49 puzzles originally published in Politiken, 28 unpublished puzzles by Jens Lindhard, 99 puzzles by Henderson, and the 4 puzzles by Bert Enderton.