Would you like to use Range puzzles in your publication?

I can provide Range puzzles in the sizes and difficulties listed below, in any print size, and at any resolution, and in most print formats (including TIFF, PNG, JPG, PDF, etc). Please feel free to contact me to discuss your requirements for Range puzzles in more detail, and if required I'll send you some printable samples.

4 x 3 - Level 1

5 x 4 - Level 1

6 x 5 - Level 1

7 x 6 - Level 1

8 x 7 - Level 1

10 x 8 - Level 1

12 x 9 - Level 1

15 x 10 - Level 1

20 x 15 - Level 1

Can you limit the visible range from each numbered cell?

Complete the grid. Each number tells you how many White squares are reachable from that square, horizontally and vertically, in total, including the numbered square (i.e. the range). You are not allowed to have two Black squares touching horizontally or vertically (diagonally is ok). Any White square can be reached from any other (i.e. they are connected). What are the numbers for? These are the number of squares reachable horizontally and vertically, including that square. The numbers tell you how many squares are reachable horizontally and vertically, including that square.

The numbers tell you how many squares are reachable horizontally and vertically, including that square.

If the grid size is 4x3, then the largest possible number could be 6. Which is the width + height - 1 (so we don't count the numbered square twice). You keep adding Black squares to reduce the number of squares that can be reached, until all of the clues are satisfied. Don't forget you also stop counting when you hit a wall.

This is the start of the puzzle.

There are already 2 squares that can be reached from here, so this clue is satisfied. Which means we need Black squares below and to the right to stop more squares being reachable.

We're not allowed to have Black squares touching horizontally or vertically, so these squares must be White.

The only way for the 8 clue to be satisfied is for all of these squares to be White.

The 3 clue is now satisfied, which means that these squares must be Black.

We're not allowed to have Black squares touching horizontally or vertically, so these squares must be White.

We're not allowed isolated White squares (as they all have to be connected), so this square must be White. This also completes the 6 clue.

The 5 clue is satisfied, so this square must be Black.

We're not allowed to have Black squares touching horizontally or vertically, so these squares must be White. The puzzle is now complete.

The completed puzzle.