Slitherlink Slitherlink Slitherlink

Slitherlink

KNS Puzzles offers the Slitherlink puzzles in the following formats:
 5 x  5 - Level 1 - Level 2 - Level 3
 7 x  7 - Level 1 - Level 2 - Level 3
10 x 10 - Level 1 - Level 2 - Level 3
15 x 15 - Level 1 - Level 2 - Level 3
20 x 20 - Level 1

Join the dots to create a single continuous loop. The numbers indicate how many of the four surrounding sections contain a line. The loop never crosses itself and any given dot can only have a maximum of two lines passing through it. What are the numbers for? These tell you how many lines surround that square.

Slitherlink Hint 1

Slitherlink Hint 1

Hint 1

A 0 clue means that there is no loop around this square, and we can mark all of the edges with crosses. A 3 and a 0 together. As we have a zero, this cannot be a line, and the other three must be, and the loop carries on both sides.

Slitherlink Hint 2

Slitherlink Hint 2

Hint 2

Two 3's together. No matter where loop goes, these will always be lines. Two 3's diagonally. No matter where loop goes, these will always be lines.

Slitherlink Hint 3

Slitherlink Hint 3

Hint 3

A 3 and a 0 diagonally. No matter where loop goes, these will always be lines. 3 in a corner. No matter where loop goes, these two will always be lines.

Slitherlink Hint 4

Slitherlink Hint 4

Hint 4

2 in a corner. No matter where loop goes, these two will always be lines. 1 in a corner. No matter where loop goes, these cannot be lines.

Slitherlink Puzzle Start

Puzzle Start

This is the start of the puzzle.

Slitherlink Step 2

Step 2

These 0 clues mean that there are no lines surrounding these squares, so we can mark them with crosses.

Slitherlink Step 3

Step 3

There is only one way of having 3 lines around this square, as we already have a cross along the bottom.

Slitherlink Step 4

Step 4

There are now only remaining 2 places for the loop to go for this 2 clue.

Slitherlink Step 5

Step 5

This is the only route allowed for the loop, to avoid the crosses we have.

Slitherlink Step 6

Step 6

There are now some crosses we can add, either because we've satisfied a clue, or a line would create a loop that's not allowed.

Slitherlink Step 7

Step 7

We have to satisfy the 2 clue, and this creates some crosses and the loop must go this way.

Slitherlink Step 8

Step 8

The loop must go this way to satisfy the 2 clue, which completes the 1 clue as it passes.

Slitherlink Step 9

Step 9

The loop must go this way to satisfy the 2 clue, which adds crosses and the loop continues around the bottom.

Slitherlink Step 10

Step 10

This is the only route for the loop, remembering to add crosses as we go, and the puzzle completes.

Slitherlink Finished Puzzle

Finished Puzzle

The completed puzzle.