Sliding Puzzle

YOUR NEXT CHALLENGE

Sliding Puzzle

The classic 15-puzzle: slide tiles into the empty slot until the numbers are in order.

1. 1

   Only tiles NEXT TO the empty slot can move — tap one and it slides into the gap.

2. 2

   Shuffle tiles around until they read 1, 2, 3… left-to-right, top-to-bottom.

3. 3

   The empty slot must end up in the bottom-right corner.

A little edgeSolve the top row first, then the left column — then repeat on the smaller square that remains.