
Positive brain game. Suitable for adults and children. 6 puzzles per page. 1002 hard killer sudoku puzzles. 8.5" X 11" Book. (215.9mm X 279.4mm). Thick paper. Glossy cover. Killer Sudoku 6x6 (Sum-do-ku, Sums Number Place, Kikagaku Nampure, Sums Sudoku, Samunamupure) divided by...