# 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.

## 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.

Try it on HexWorld.

### Puzzle 2

Red to play and win.

Try it on HexWorld.

### Puzzle 3

Red to play and win.

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

Try it on HexWorld.

### Puzzle 4

Red to play and win.

Try it on HexWorld.

## Other authors

### Puzzle 1

By John Tromp. Blue to play and win.

Try it on HexWorld.

### Puzzle 2

By lazyplayer. Blue to play and win.

Try it on HexWorld.

### Puzzle 3

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

Try it on HexWorld.

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.

Try it on HexWorld.

Source: this Little Golem forum thread.

### Puzzle 5

By Ryan B. Hayward. Red to play and win.

Try it on HexWorld.

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.

Source: Ryan B. Hayward, "A puzzling Hex primer" (https://webdocs.cs.ualberta.ca/~hayward/papers/puzzlingHexPrimer.pdf).

### Puzzle 6

By Eric Demer. Red to play and win. Red has exactly one winning move.

Try it on HexWorld.

### Puzzle 7

By Eric Demer. Blue to play and win.

Try it on HexWorld.

### Puzzle 8

By Hexanna. Red to play and win.

Try it on HexWorld.