CalcuDoku, Killer and 3-variants books

Hello everyone! It’s been a while… I sent out a newsletter this weekend and in case you haven’t seen (why haven’t you?) I’d like to let you know of the three new titles that have just been released. The latest one, fresh off the press, is the largest calcudoku book I know of! It contains 1000 CalcuDoku puzzles of all difficulties and in sizes 4×4, 5×5, 6×6, 7×7 and 8×8, 200 of each of them. If you like CalcuDoku puzzles (aka KenKen™, Kendoku™, Opdoku, Mathdoku…) I think this is the best value for your money! Second book is also a second volume of the Cutting-Edge Sudoku series. The three sudoku variants in this book are the same as before: Flower Sudoku, Outside Sudoku and Consecutive Sudoku. And last but certainly not the least, is a very special book. It is a new, special, 10th anniversary edition of the “Sudoku K” book, which was published in 2006 and was the first book I ever published worldwide. So… if you would like to be reminded of how the Killer Sudoku puzzles used to be back then, this is the book for you! More books are coming soon. Make sure to sign up for the newsletter if you want to be informed as soon as they are released!