Crossmath Challenge

About

Crossmath Challenge takes the crossword format and swaps letters for numbers: drag tiles into a grid so every row and column completes a valid math equation. It reads simple in the first minute and gets genuinely tricky once tiles start constraining each other across both directions at once — the kind of puzzle that's perfect with coffee and five spare minutes.

Controls

Tap or drag a tile from the tray into an empty grid cell. Shuffle reorders your tray; Hint auto-fills a cell (limited uses).

Tips

• Solve the equations with the fewest blank cells first — they constrain the rest of the grid.
• Save your Hints for genuine dead ends, not the first tricky spot.