Binary Puzzles - 200 Master Puzzles 8x8 vol.28
by David Smith
ISBN 13: 9781073882144
Format: Paperback (116 pages) Publisher: Independently published Published: 14 Jun 2019
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Outside Sudoku - 400 Hard to Master Puzzles vol.12
ISBN 13: 9781082009099
Format: Paperback (229 pages) Publisher: Independently published Published: 22 Jul 2019