4 puzzles

Numbers puzzles

Grids of digits with simple rules. You never need arithmetic beyond counting and, once, adding to fifteen.

1. 02Sudoku SixA smaller sudoku: fill a 6 by 6 grid so each row, column and box holds the digits 1 to 6.Numbers6 min
2. 03Nonogram 5×5Shade squares to match the number clues on each row and column and reveal a small pattern.Numbers3 min
3. 13Magic SquareArrange the numbers 1 to 9 in a 3 by 3 grid so that every row, column and diagonal adds up to 15.Numbers4 min
4. 20Binary GridFill the grid with 0s and 1s so that no three alike sit together and every line is balanced.Numbers7 min

See all twenty puzzles