For diehards only! These incredibly difficult puzzles are handcrafted for the sudoku warrior who dares to go where other solvers fear to tread. So, if you're armed with the highest-level strategies, get ready for the most satisfying fight your life. It's the most challenging sudoku book we've ever published!
Ik heb een vraag over het boek: ‘Longo, F: Beyond Black Belt Sudoku - Longo, Frank’.
Vul het onderstaande formulier in.
We zullen zo spoedig mogelijk antwoorden.
