A CHALLENGE FOR SUDOKU LOVER!!I know that regular sudoku is too easy and less challenging for you. This specific puzzle book contains a top-quality variety of sudoku puzzles that are guaranteed to challenge you in the best way possible.This book contains 180 puzzles Sudoku Variants in normal and hard difficulty. The following Sudoku variants are included: Sudoku XSudoku HyperSudoku TwinsSudoku Triathlon ASudoku Triathlon BSudoku MarathonSudoku SamuraiSudoku 12x12Sudoku 16x16The regular sudoku rules apply to every 9x9 grid. Put numbers from 1 to 9 in every empty cell. Each row, each column, and each 3x3 box should consist of one of each digit.The puzzles on Sudoku Variants have one unique solution that you can get using logic, absolutely no guessing needed.Features: 180 Sudoku Variants Puzzle Books in normal and hard difficulty.An answer key for each sudoku puzzlePuzzles are printed on high-quality white paper, 8,5 x 11 inches paper size2 Puzzles Per PageSudoku puzzles are a proven method for enhancing logic skills. As a logic puzzle, Sudoku is also a great brain game. If you play Sudoku every day, you'll soon begin to see improvements within your concentration and overall brain power.You could reduce your probabilities of Dementia or Alzheimer's simply by solving Sudoku puzzles. By using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking, and memory.Choose your book NOW by clicking on the BUY NOW button at the top of this page.