Positive energy for the brain. 2 puzzles per page. 60 Killer sudoku puzzles 8x8 easy levels. 60 Killer sudoku puzzles 8x8 medium levels. 60 Chain Sudoku 8x8 easy levels. 60 Chain Sudoku 9x9 medium levels. Killer sudoku. This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from (1 to 6; 1 to 8; 1 to 9; 1 to 10; 1 to 12), each of the digits should appear only once in each row and column of the 6x6; 8x8; 9x9; 10x10; 12x12 square. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). Chain sudoku ("Strimko", "Gyrus Sudoku") is a square consisting of circles. The goal is to arrange the figures in circles so that in each horizontal and each vertical all the numbers are different. In the links of one chain all the numbers must also be different. Unique puzzles. Only 1 verified solution. All answers are at the end of the book. Sudoku puzzles of light and medium levels have a lot of names: sudoku, sudoku puzzles, sudoku game, sudoku solver, sudoku medium, sudoku easy, daily sudoku, play sudoku, game sudoku, medium sudoku puzzles, easy sudoku puzzles, le puzzle, sudoku with answers, sudoku grid, how to play sudoku, sudoku answers, play sudoku medium, play sudoku easy, sudoku puzzle solver, play sudoku game, simple sudoku, times sudoku, daily sudoku puzzle, mini sudoku, sudoku classic, sudoku puzzle game, super sudoku, how to play sudoku game, jigsaw puzzle, puzzle games, i want to play sudoku, sudoku challenge, sudoku pro, simple sudoku puzzle, sud0ku, find sudoku, play sudoku puzzles, play sudoku now, puzzle e, jigsaw puzzle games, brain games sudoku, play puzzle games, puzzle maker, life sudoku, sudoku number puzzle, maths puzzle games, un puzzle, jigsaw puzzel, sudoku puzzels, maths puzzles, loco sudoku, sudoku game app, mathematical puzzles, medium sudoku printable, easy sudoku printable, sudoku card game, puzzle inlay, sudoku number game, sukado game, puzzlemania, puzle, puzzle bubble game, games sudoku medium, games sudoku easy, sudoku number, jigsaw game, sudoku game download, medium sudoku games, easy sudoku games, sudoku problems, sudoku puzzles with answers, puzzle france, how to do sudoku puzzles, puzzle master, sudoku deutsch, sudoku puzzle answers. I hope you enjoy the book. Best regards, Basford Holmes