Every sudoku fan knows that this popular number puzzle has always flirted with math. But the two have never come together...until now! Meet Calcu-doku, the newest and sure to be hottest development in the sudoku world. All that’s needed is simple arithmetic, so even solvers who aren’t mathematically inclined will have fun. Each puzzle looks like a normal sudoku, except for sectioned-off smaller areas that contain a little math symbol and a number. For example, let’s say that two numbers are boxed in with a "21x” in the corner: that means they multiply to 21, so they must be either 3/7 or 7/3. All the other traditional sudoku rules remain in place, but the added variety of a little touch of math makes Calcu-doku extra-addictive. Plus: 144 regular sudoku, too!

Positive brain awesome game. Suitable for adults and children. 6 puzzles per page. 500 CalcuDoku sudoku puzzles 8x8 easy levels. 502 CalcuDoku sudoku puzzles 8x8 medium levels. Thick paper. Glossy cover. Calcudoku may be called or searched with the following phrases or names: cendoku, calcudoku, kendoku, sudoku game, maths puzzles, kendoku puzzles, daily sudoku, mathdoku answers, calcudoku solver, mathdoku solver, sudoku puzzles, sudoku brainium, malacca, sudoku math puzzles, maze, mathdoku, mathdoku puzzles with answers, campo santo, jigsawdoku, futoshiki, inky puzzles, fantino, sparkchess, shabash, mandate, permainan sudoku, dkm shisen, sudoku sudoku, math sudoku, calcudoku answers, qonqr, beachball pop, mathdoku rules, sudoku puzzle game, itrash, calcudoku rules, calcudoku puzzles, iball touch, andoku, void runner, numby, mathdoku 9x9 answers, life sim, nextoy llc, sudoku normal, sumoku sudoku, puzzles similar to sudoku, punch clock, hitoshi puzzle, gem lites, ryukendo, tetcolor, gichtel, crazy turtle, ticbits sudoku, listen to masters, card wars, newspaper maths puzzles, polar bear escape, mnemosyne, patrick min, sample sudoku puzzles, gametimer, japanese math puzzles, sudoku with friends, hidden ships, letter ladder, week end, jigsaw master, game like sudoku with math, mathdoku 9x9, sudoku hd, su du ku, real sudoku, ghetto crew, math puzzle games like sudoku, cijferpuzzel, sudoku countdown, math games like sudoku, infinity maze, andoku 2, blocked guy, name that tune, olivia chomentowska, math puzzles like sudoku, hitoshii, japanese math games, mighty fin, gomrath, medieval escape, megamaze, tap dash, how to play mathdoku, drop match, how to solve mathdoku, catch and match, triva, memory drop, kendoku solver, mini rpg, trak 4, tomtom puzzles, bug droppings, hidden tales, k doku, how to play calcudoku, doodle hunt, kendu solver. I hope you enjoy these puzzles. Best regards, Basford Holmes

Positive brain awesome game. Suitable for adults and children. 6 puzzles per page. 250 CalcuDoku sudoku puzzles 8x8 easy levels. 250 CalcuDoku sudoku puzzles 8x8 medium levels. 250 CalcuDoku sudoku puzzles 8x8 hard levels. 252 CalcuDoku sudoku puzzles 8x8 extreme levels. Thick paper. Glossy cover. Calcudoku may be called or searched with the following phrases or names: cendoku, calcudoku, kendoku, sudoku game, maths puzzles, kendoku puzzles, daily sudoku, mathdoku answers, calcudoku solver, mathdoku solver, sudoku puzzles, sudoku brainium, malacca, sudoku math puzzles, maze, mathdoku, mathdoku puzzles with answers, campo santo, jigsawdoku, futoshiki, inky puzzles, fantino, sparkchess, shabash, mandate, permainan sudoku, dkm shisen, sudoku sudoku, math sudoku, calcudoku answers, qonqr, beachball pop, mathdoku rules, sudoku puzzle game, itrash, calcudoku rules, calcudoku puzzles, iball touch, andoku, void runner, numby, mathdoku 8x8 answers, life sim, nextoy llc, sudoku normal, sumoku sudoku, puzzles similar to sudoku, punch clock, hitoshi puzzle, gem lites, ryukendo, tetcolor, gichtel, crazy turtle, ticbits sudoku, listen to masters, card wars, newspaper maths puzzles, polar bear escape, mnemosyne, patrick min, sample sudoku puzzles, gametimer, japanese math puzzles, sudoku with friends, hidden ships, letter ladder, week end, jigsaw master, game like sudoku with math, mathdoku 9x9, sudoku hd, su du ku, real sudoku, ghetto crew, math puzzle games like sudoku, cijferpuzzel, sudoku countdown, math games like sudoku, infinity maze, andoku 2, blocked guy, name that tune, olivia chomentowska, math puzzles like sudoku, hitoshii, japanese math games, mighty fin, gomrath, medieval escape, megamaze, tap dash, how to play mathdoku, drop match, how to solve mathdoku, catch and match, triva, memory drop, kendoku solver, mini rpg, trak 4, tomtom puzzles, bug droppings, hidden tales, k doku, how to play calcudoku, doodle hunt, kendu solver. I hope you enjoy these puzzles. Best regards, Basford Holmes

Positive brain awesome game. Suitable for adults. 6 puzzles per page. 500 CalcuDoku sudoku puzzles 8x8 medium levels. 502 CalcuDoku sudoku puzzles 8x8 hard levels. Thick paper. Glossy cover. Calcudoku may be called or searched with the following phrases or names: cendoku, calcudoku, kendoku, sudoku game, maths puzzles, kendoku puzzles, daily sudoku, mathdoku answers, calcudoku solver, mathdoku solver, sudoku puzzles, sudoku brainium, malacca, sudoku math puzzles, maze, mathdoku, mathdoku puzzles with answers, campo santo, jigsawdoku, futoshiki, inky puzzles, fantino, sparkchess, shabash, mandate, permainan sudoku, dkm shisen, sudoku sudoku, math sudoku, calcudoku answers, qonqr, beachball pop, mathdoku rules, sudoku puzzle game, itrash, calcudoku rules, calcudoku puzzles, iball touch, andoku, void runner, numby, mathdoku 9x9 answers, life sim, nextoy llc, sudoku normal, sumoku sudoku, puzzles similar to sudoku, punch clock, hitoshi puzzle, gem lites, ryukendo, tetcolor, gichtel, crazy turtle, ticbits sudoku, listen to masters, card wars, newspaper maths puzzles, polar bear escape, mnemosyne, patrick min, sample sudoku puzzles, gametimer, japanese math puzzles, sudoku with friends, hidden ships, letter ladder, week end, jigsaw master, game like sudoku with math, mathdoku 9x9, sudoku hd, su du ku, real sudoku, ghetto crew, math puzzle games like sudoku, cijferpuzzel, sudoku countdown, math games like sudoku, infinity maze, andoku 2, blocked guy, name that tune, olivia chomentowska, math puzzles like sudoku, hitoshii, japanese math games, mighty fin, gomrath, medieval escape, megamaze, tap dash, how to play mathdoku, drop match, how to solve mathdoku, catch and match, triva, memory drop, kendoku solver, mini rpg, trak 4, tomtom puzzles, bug droppings, hidden tales, k doku, how to play calcudoku, doodle hunt, kendu solver. I hope you enjoy these puzzles. Best regards, Basford Holmes

Calcu-doku has taken the puzzle world by storm, providing solvers with many happy hours of logical thinking and simple mathematics. Now, world sudoku champ Thomas Snyder takes it to the next level. He ups the ante by incorporating unique themes into the mix: so your starting numbers might be in the shape of a smiley face, or the secret to solving might revolve around the number 5. Snyder has pulled out all the stops-and created a compelling, captivating, and creative variation on Calcu-doku.

Positive brain awesome game. 6 puzzles per page. 500 CalcuDoku sudoku puzzles 8x8 hard levels. 502 CalcuDoku sudoku puzzles 8x8 extreme levels. Thick paper. Glossy cover. Calcudoku may be called or searched with the following phrases or names: cendoku, calcudoku, kendoku, sudoku game, maths puzzles, kendoku puzzles, daily sudoku, mathdoku answers, calcudoku solver, mathdoku solver, sudoku puzzles, sudoku brainium, malacca, sudoku math puzzles, maze, mathdoku, mathdoku puzzles with answers, campo santo, jigsawdoku, futoshiki, inky puzzles, fantino, sparkchess, shabash, mandate, permainan sudoku, dkm shisen, sudoku sudoku, math sudoku, calcudoku answers, qonqr, beachball pop, mathdoku rules, sudoku puzzle game, itrash, calcudoku rules, calcudoku puzzles, iball touch, andoku, void runner, numby, mathdoku 9x9 answers, life sim, nextoy llc, sudoku normal, sumoku sudoku, puzzles similar to sudoku, punch clock, hitoshi puzzle, gem lites, ryukendo, tetcolor, gichtel, crazy turtle, ticbits sudoku, listen to masters, card wars, newspaper maths puzzles, polar bear escape, mnemosyne, patrick min, sample sudoku puzzles, gametimer, japanese math puzzles, sudoku with friends, hidden ships, letter ladder, week end, jigsaw master, game like sudoku with math, mathdoku 8x8, sudoku hd, su du ku, real sudoku, ghetto crew, math puzzle games like sudoku, cijferpuzzel, sudoku countdown, math games like sudoku, infinity maze, andoku 2, blocked guy, name that tune, olivia chomentowska, math puzzles like sudoku, hitoshii, japanese math games, mighty fin, gomrath, medieval escape, megamaze, tap dash, how to play mathdoku, drop match, how to solve mathdoku, catch and match, triva, memory drop, kendoku solver, mini rpg, trak 4, tomtom puzzles, bug droppings, hidden tales, k doku, how to play calcudoku, doodle hunt, kendu solver. I hope you enjoy these puzzles. Best regards, Basford Holmes

When you buy this book you get an electronic version (PDF file) of the interior of this book. CalcuDoku is a fun and addicting logic puzzle game that combines Sudoku with math. CalcuDoku is a fun way for kids and adults to practice addition, subtraction, multiplication, and division facts. This book is ideal for you if you love to solve difficult CalcuDoku puzzles no matter their size. You do not need to wade through tons of easy CalcuDoku puzzles before getting to the real brain teasers. You will experience extremely hard CalcuDoku 7x7, CalcuDoku 8x8 and CalcuDoku 9x9. You get the perfect mix of different sizes of CalcuDoku to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku Mixed Grids - Hard is a collection of 276 puzzles: 72 hard CalcuDoku 7x7 puzzles 72 hard CalcuDoku 8x8 puzzles 72 hard CalcuDoku 9x9 puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this CalcuDoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. CalcuDoku is also known as Square Wisdom, CanCan, MinuPlu, Mathdoku and Calcu-Doku.