Number Slide

How to play

A 4×4 grid scrambled from a solved layout where every row and column sums to 10. Swap tiles back into place to solve it.

Rules

  • Click a tile to select it, then click a second tile to swap the two.
  • Each row and column always contains the numbers 1, 2, 3 and 4 — only their positions are scrambled.
  • The Rows/Cols readout below the grid updates live so you can see how close each line is to 10.
  • Get every row and column summing to 10 to solve the puzzle.

Tips

A line already reading 10 is solved — don't touch it. Focus your swaps on whichever rows and columns are furthest from 10 first.