Difference between revisions of "Puzzles"

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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.
 
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.
  
== Puzzle 1 ==
+
== [[Piet Hein]]'s puzzles ==
By [[Piet Hein]]
+
  
Blue to play and win.
+
See article [[Piet Hein's puzzles]]
  
<hex>R11 C11 Vd1 Vd2 Vd3 Vd4 Vd5 Vd6 Vd7 Vd9 Vd10 Vd11 Vh6 Vh7 Hc2 Hd8 Hh9 Hi4</hex>
+
== [[Claude Berge]]'s puzzles ==
  
== Puzzle 2 ==
+
See article [[Claude Berge's puzzles]]
By [[Piet Hein]]
+
  
Blue to play and win.
+
== Bert Enderton ==
  
<hex>R3 C3 Ha1 Va2 Vb3</hex>
+
=== Puzzle 1 ===
  
== Puzzle 3 ==
+
Red to play and win.
By [[Piet Hein]]
+
  
Blue to play and win.
+
<hex>R7 C7 Q1
 +
  Hc3 Hf3
 +
    Vc4 Hd4
 +
    Hc5 Ve5
 +
Va6</hex>
  
<hex>R6 C6 Vc3 Vf3 Vd5 Hb1 Hb5</hex>
+
=== Puzzle 2 ===
  
== Puzzle 4 ==
+
Red to play and win.
By [[Piet Hein]]
+
  
Blue to play and win.
+
<hex>R7 C7 Q1
 +
    Hc3
 +
          Hf5
 +
    Vb6</hex>
  
<hex>R4 C4 Vd1 Va4 Hc2</hex>
+
=== Puzzle 3 ===
  
== Puzzle 5 ==
+
Red (Vertical) to play and win.
By [[Piet Hein]]
+
 
 +
This is a very difficult puzzle whose complete solution is extremely complex.
 +
 
 +
<hexboard size="6x6"
 +
  contents="B c2 R f4"
 +
  />
 +
 
 +
== Other authors ==
 +
 
 +
=== Puzzle 1 ===
 +
By [[John Tromp]]
  
 
Blue to play and win.
 
Blue to play and win.
  
<hex>R4 C4 Va4 Ha1</hex>
 
  
== Puzzle 6 ==
+
<hex> R10 C10
By [[Piet Hein]]
+
                  Ri1
 +
            Bg4 Rh4
 +
        Bf5 Rg5
 +
      Be6 Rf6
 +
  Bd7
 +
Rc8
 +
    Rd9 </hex>
  
On the board of size 3 there are precisely two opening moves such that, with optimal play from both players, the board will be completely filled before the game is over. Which are the two opening moves?
+
=== Puzzle 2 ===
 +
By ''lazyplayer''. Blue to play and win.
  
== Puzzle 7 ==
+
<hex> R7 C7
By Unknown
+
Vb2
 +
He3
 +
Vb5
 +
</hex>
  
Red (Vertical) to play and win
+
=== Puzzle 3 ===
 +
By [[David J Bush]]. Taken from a game on [[Playsite]] in 2003. Red to play and win.
  
This is a very difficult puzzle whose complete solution is extremely complex.
+
<hex> R10 C10 Q1
 +
              He2 Hf2 Hg2 Hh2 Hi2
 +
Va3 Hb3    Hd3 Ve3 Vf3 Vg3
 +
Va4 Vb4 Vc4 Hd4 Ve4 Hf4 Vg4 Vh4
 +
      Hb5 Vc5 Vd5 He5 Vf5
 +
              Hd6 Ve6
 +
                    Ve7
 +
                            Hg8
 +
              Hc9 Hd9
 +
</hex>
 +
 
 +
Source: this [[Little Golem]] forum [http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=14 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.
 +
 
 +
<hex> R10 C10 Q1
 +
Hb2                Hg2
 +
                Hf3 Vg3
 +
  Vb4        Ve4 Hf4
 +
              He5
 +
        Vc6
 +
            Vd7
 +
              Vd8
 +
</hex>
 +
 
 +
Source: this [[Little Golem]] forum [http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=50&topic=212 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.<br/>
 +
Blue to move and win (there is just 1 winning sequence).
 +
 
 +
<hexboard size="11x11"
 +
  coords="hide"
 +
  contents="B 4:h2 R 1:a4 R 5:b5 R 3:c6 B 6:e7 B 2:g8 R 7:b9"
 +
  />
 +
 
 +
=== Puzzle 6 ===
 +
From Ryan B. Hayward, "A puzzling Hex primer". Red to play and win.
  
<hex>R6 C6 Q1 Vf4 Hc2</hex>
+
<hexboard size="6x6"
 +
  coords="hide"
 +
  contents="R d1 B e1 R f1 B e2"
 +
  />
  
 
== See also ==
 
== See also ==
Line 54: Line 118:
 
* [[Solutions to puzzles]]
 
* [[Solutions to puzzles]]
 
* [[Ladder puzzles]]
 
* [[Ladder puzzles]]
 +
* [[Puzzle server]]
 +
 +
[[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
 +
 +
[[category:Puzzle]]

Revision as of 02:41, 21 May 2020

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 (Vertical) to play and win.

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

abcdef123456

Other authors

Puzzle 1

By John Tromp

Blue to play and win.


Puzzle 2

By lazyplayer. Blue to play and win.

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).

4153627

Puzzle 6

From Ryan B. Hayward, "A puzzling Hex primer". Red to play and win.

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