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Help – Range 



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Objectives / Rules

See the Basic Ideas or Walkthrough below for extra tips and tricks.



Range Puzzle

What are the numbers for?
These are the number of squares reachable horizontally and vertically, including that square.

Click or move your mouse over the puzzle to see the answer.



Basic Ideas 



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

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.


If the grid size is 4 × 3, then the largest possible number could be 6. Which is the width + height - 1 (so we don't count the numbered square twice).


Walkthrough 



Help 1
Step 1
This is the start of the puzzle.

Solve this puzzle for yourself at the same time.


Help 2
Step 2
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.


Help 3
Step 3
We're not allowed to have Black squares touching horizontally or vertically, so these squares must be White.


Help 4
Step 4
The only way for the 8 clue to be satisfied is for all of these squares to be White.


Help 5
Step 5
The 3 clue is now satisfied, which means that these squares must be Black.


Help 6
Step 6
We're not allowed to have Black squares touching horizontally or vertically, so these squares must be White.


Help 7
Step 7
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.


Help 8
Step 8
The 5 clue is satisfied, so this square must be Black.


Help 9
Step 9
We're not allowed to have Black squares touching horizontally or vertically, so these squares must be White. The puzzle is now complete.


Help 10
Step 10
The completed puzzle.

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