Calcudoku - Hard to Master
5 primary works
Book 1
Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 1)
by Oliver Quincy
Published 9 June 2018
Book 2
Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 2)
by Oliver Quincy
Published 8 June 2018
Book 3
Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 3)
by Oliver Quincy
Published 8 June 2018
Book 4
Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 4)
by Oliver Quincy
Published 8 June 2018
Book 5
Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 5)
by Oliver Quincy
Published 8 June 2018