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For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of a five grid interlinked system.
This is Su Doku multiplied: every column, row and 3×3 box must contain the digits 1 to 9. Where the puzzles overlap, the rows and columns do not go beyond their usual 9×9 length but the interlocking boxes give you more clues – and more complexity.
With another 100 new Samurai puzzles to vex you for hours, lose yourself in the four levels of this book:
10 Super difficult
Even the speediest of Su Doku solvers will be agonising over these ultra-complex, extended brainteasers.
These are the most difficult Su Doku puzzles in The Times range.
Imprint: The Times
Publication date: 01/09/2022
Series: The Times Su Doku