Slide an adjacent tile into the empty space to rearrange the board. Solving the puzzle requires planning moves that preserve completed rows and columns while bringing the remaining tiles into position. The puzzle is commonly presented in a scrambled state, but the specific software version and rules are not identified here.

Build the solution from the upper-left corner, completing rows or columns without disturbing them whenever possible. Reserve the final two positions of a row or column for a coordinated sequence rather than placing one tile prematurely. Work patiently around the empty space and avoid unnecessary reversals.