Series:

Straights

4 primary works

Book 1

Cover of Straights Puzzles - 200 Easy Puzzles 9x9 vol.1

Book 2

Cover of Straights Puzzles - 200 Normal Puzzles 9x9 vol.2

Book 3

Cover of Straights Puzzles - 200 Hard Puzzles 9x9 vol.3

Book 4

Cover of Straights Puzzles - 200 Master Puzzles 9x9 vol.4