Hard Fifteen
These are the hard Fifteen puzzles, numbered 5301 to 5312. Fully random 4×4 positions. Across the set, the minimum solution length runs from 31 to 47 moves.
Puzzles in this set
- #530144 moves minimum
- #530237 moves minimum
- #530340 moves minimum
- #530436 moves minimum
- #530547 moves minimum
- #530635 moves minimum
- #530735 moves minimum
- #530841 moves minimum
- #530942 moves minimum
- #531031 moves minimum
- #531143 moves minimum
- #531238 moves minimum
How to approach this levelSolve the top row, then the left column, and treat what remains as a 3×3 puzzle. For the patterns behind this game, read Solving the fifteen puzzle, row by row.