Types of Puzzles

Throughout the history there were created and developed various types of puzzles for mind training and memory development skills. These are the most popular ones:

• Logic puzzles using a chess board, such as Knight's Tour and Eight queens.
• Mathematical problems such as the missing square puzzle. Many of these are "impossible puzzles", such as the Seven Bridges of Königsberg, Water, gas, and electricity and Three cups problem. See List of impossible puzzles.
• Picture puzzles, such as sliding puzzles like the fifteen puzzle; jigsaws and variants such as Puzz-3D.
• Puzzle video game
• Sangaku
• Sokoban
• Spot the difference
• Tangram
• Word puzzles, including anagrams, crosswords, word-searches and ciphers.
• The Anagram Jigsaw is a jigsaw puzzle where pieces are rearranged for two correct solutions.