Sudoku 12 x 12 Level 1: Very Easy Vol.... by Numerik, Sophia
12x12 Sudoku | Logic Puzzles Wiki | Fandom
Sudoku 12 x 12 Level 5: Very Hard Vol. 12: Play Sudoku 12x12 Twelve Grid With Solutions Hard Level Volumes 1-40 Sudoku Cross Sums Variation Tr (Paperback) | Snowbound Books