CalcuDoku
Subtitle: 250 Easy 4x4 Square Wisdom Puzzles
Publisher: Independently Published; Independently published
Published: May 19, 2019
Format: paperback
Number of pages: 162
ISBN-13: 9781099345104
Notes: Source title: CalcuDoku: 250 Easy 4x4 Square Wisdom Puzzles (KenDoku)