1000+ Sudoku Puzzles for Adults: Medium to Hard Sudoku Puzzles with Detailed Step-by-step Solutions and Hints When You Get Stuck
The Big Book of Picross Hanjie Griddlers Nonograms: 4 volumes in 1 - with 400++ Japanese Picture Logic Puzzles
Canada Math Olympiad Grade 9-10 - Canada Mathematics Olympiad Grade 9-10 - Canada Mathematics Competitions Grade 9-10 - Canada Math Contest Grade 9-10 - CMO Prep