1,000 + Premium sudoku killer 9x9

Positive brain awesome game. Suitable for adults. 6 puzzles per page. 250 sudoku killer puzzles 9x9 easy levels. 250 sudoku killer puzzles 9x9 medium levels. 250 sudoku killer puzzles 9x9 hard levels. 252 sudoku killer puzzles 9x9 extreme levels. Thick paper. Glossy cover. Killer Sudoku 9x9 (Sum-do-ku, Sums Number Place, Kikagaku Nampure, Sums Sudoku, Samunamupure) divided by a smaller square of 3x3 cells. The entire playing field consists of 81 cells. It is necessary to fill in empty cells with numbers from 1 to 9, each of the numbers should appear only once in each row, column and 3x3 square. The sum of all numbers in the cells indicated by dashed lines should correspond to the number printed in the corner. I hope you enjoy these puzzles. Best regards, Basford Holmes