Series:

Hidoku - Hard to Master

5 primary works

Book 1

Cover of Hidoku - 200 Hard to Master Puzzles 9x9 (Volume 1)

Book 2

Cover of Hidoku - 200 Hard to Master Puzzles 9x9 (Volume 2)

Book 3

Cover of Hidoku - 200 Hard to Master Puzzles 9x9 (Volume 3)

Book 4

Cover of Hidoku - 200 Hard to Master Puzzles 9x9 (Volume 4)

Book 5

Cover of Hidoku - 200 Hard to Master Puzzles 9x9 (Volume 5)