Free Preview of Brain Workouts: 500 Easy Logic Puzzles (Suguru, Masyu, Arrows, Mathrax, Minesweeper, Straights, No Four in a row, Sudoku, Sutoreto, Kuromasu, Grand Tour and Creek)
Brain Workouts: 500 Easy Logic Puzzles (Suguru, Masyu, Arrows, Mathrax, Minesweeper, Straights, No Four in a row, Sudoku, Sutoreto, Kuromasu, Grand Tour and Creek)