Argyle Sudoku - Hard

Play free Argyle Sudoku Hard online or download printable Argyle Sudoku Hard (up to 4 puzzles per page) to solve with pen and paper.

Gattai-3 - Hard

Sudoku Variants

Argyle Sudoku Level 4: Hard Vol. 19: Play Argyle Sudoku 9x9 Nine Numbers Grid With Solutions Hard Level Volumes 1-40 Sudoku Cross Sums Variation Challenge For All Ages Kids to Adults

Windoku - Hard

Butterfly Sudoku - Hard

Sudoku Variants

Argyle Sudoku Level 5: Very Hard Vol. 16: Play Argyle Sudoku 9x9 Nine Numbers Grid With Solutions Hard Level Volumes 1-40 Sudoku Cross

Argyle Sudoku Level 5: Very Hard Vol. 16: Play Argyle Sudoku 9x9 Nine Numbers Grid With Solutions Hard Level Volumes 1-40 Sudoku Cross Sums Variation

200 KaKuro 17x17 + 18x18 + 19x19 + 20x20 and 200 Tridoku very hard levels.: Very challenging sudoku puzzles. Holmes presents the Airbook heavy logic print). (Kakuro and Tridoku classic sudoku) - Holmes, Basford: 9781798627174 - AbeBooks

Sudoku - Puzzles books

100 Sudoku Argyle Puzzles MIX 99 Kindle Scribe Learn to - Ireland

Argyle Sudoku Level 1: Very Easy Vol. 35: Play Argyle Sudoku 9x9 Nine Numbers Grid With Solutions Easy Level Volumes 1-40 Sudoku Cross Sums Variation Travel Paper Logic Games Solve Japanese Puzzles

Sudoku X - Hard

Sudoku Travel Pocket Size Book 7 - 120 Medium to Hard Logic Puzzles For On-The-Go Holiday Fun