Objective: Slide tiles one at a time into the empty space to arrange them in numerical order (left to right, top to bottom).
Controls:
Rules: Slide tiles by clicking on a tile next to the gap. Tiles can only slide into the empty space. The puzzle is solved when tiles are in order 1 to N-1 with the empty space at the bottom-right.
Tips: Try to solve one row at a time from the top. For larger puzzles, solve the top rows first, then the left columns.