# 2D Puzzles

## Hexa Puzzle - solve online the most original and addictive puzzle game

From the creators of Puzzle iT the most original and addictive puzzle game enters a new dimension of fun!

Hexa uses a puzzle set of twelve pieces and a game board which can be completely filled using only nine pieces. The pieces may be played with either face uppermost, and the different shapes are labeled from 1 to 12. The purpose of the puzzle is to fill the board with any nine pieces.

## Puzzles

A puzzle is a problem or enigma presented as entertainment; that is written down, acted out, etc. Many puzzles stem from serious mathematical or logistical problems, whereas others are devised for the sole purpose of being brain teasers. The history of puzzles goes back many thousand years, a tangram being one of the earliest and still one of the most popular puzzles. In certain temples of Japan monks used to write mathematical puzzles on temple walls.

## Puzzles

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i wants to increase my creativity and inovation power.I think that this is one of the best way to make your mind upto date, through puzzels.

## re: noughts and crosses/ tic tac toe game

look at the tic tac toe game well it says the computer cannot loose on level 3 well i beat it i have a screenshot of my win if you want to see e-mail me and i will send you the file

i am champion its well good you just need to try over and over again till you outsmart the computer they was created by us so they can be beaten by us POW!!!

## Hot Puzzles - Puzzles involving different kinds of tessellation (tilings)

The puzzles below involve different kinds of tessellation (tilings). The pieces are made from a number of triangles. All the pieces in a set have the same area, are numbered, and may be used with either face uppermost.

The unique design dictates that no solution has any piece plus position in common with another solution. This make it possible to organize fair contests.

## Hexa Puzzle - Thousands of problems are possible

 Hexa set

Hexa uses a puzzle set of twelve pieces, each comprising six equilateral triangles uniquely positioned. The puzzle uses only some of the pieces (5 or 9) from the full set depending of the chosen board.

The pieces may be played with either face uppermost, and the different shapes are labeled from 1 to 12. You can experience Hexa online version here.

The puzzle board has a special design and is made by a small green board for a low level of difficulty level (5 pieces) and an orange one for a higher level of difficulty (9 pieces). Other kinds of board are possible but the ideal boards are for 5 and 9 pieces.

The unique design dictates that no solution has any piece plus position in common with another solution. For reference, each row of triangles is numbered and each triangle in a row is labelled with a letter.

## Florian's Fishes

Florian's Fishes is a puzzle in which each piece comprises two squares plus four equilateral triangles. This puzzle uses the full set of 49 distinct pieces.

In other tessellations (tilings) of the plane, mathematical methods can be applied in helping to derive solutions. This does not appear to be the case for solving Florian's Fishes, which probably demands trial and error methods. This kind of puzzle can be quite challenging for experienced puzzlers.

The puzzle board looks like an ocean (blue) with a dolphin and two fishes.

## Dolphy Puzzle

 Dolphy puzzle is a variant of Florian's Fishes in which pieces comprise two squares plus four equilateral triangles. This puzzle use only six pieces from the full set of 49 pieces which covers all possible arrangements. In all other tessellations (tilings) of the plane, mathematical methods can be applied in helping to derive solutions. This is not true for Dolphy puzzle which relies entirely on trial and error. This kind of puzzle can be quite challenging, even for children. Do not use computers! This does not make any sense.

## 2D Puzzles generated using a tessellation of the plane

Many 2D Puzzles are generated using a tessellation of the plane.

The word "tessellate" means to form or arrange polygons in a checkered or mosaic pattern. It is derived from the Ionic version of the Greek word "tesseres", which in English means "four". The first tilings were made from square tiles.

A regular tessellation means a tessellation made up of identical regular polygons. Only three regular polygons completely tessellate (cover) the Euclidean plane: triangles, squares and hexagons.

A semiregular tessellation uses a variety of regular polygons. The arrangement of polygons at every vertex point is identical.

In tessellations (tilings) of the plane, mathematical methods can be often applied in helping to derive solutions. This collection of puzzles demonstrates this is not always true.