Shapes Sudoku

Geometric symbols replace digits in Shapes Sudoku. Squares, circles, rhombuses, triangles, and other colored pieces fill the grid, making patterns easier to track than standard number Sudoku. Three board sizes set the pace of each puzzle. Pick a compact 4x4 layout, move up to 6x6, or work through the full 9x9 grid. The smallest board contains 16 cells. The middle one uses 36, and the largest reaches 81. Four difficulty settings appear on every layout, changing how many spaces are filled before the round begins.

How to play?

Place a shape into each empty cell until the board is complete. Match the main Sudoku rule at all times. A row cannot repeat a piece. A column cannot repeat one either. The same rule applies inside every mini-block. The 4x4 layout is divided into 4 mini-blocks with 4 cells each. The 6x6 version uses 6 mini-blocks with 6 cells. The 9x9 board contains 9 mini-blocks, and each one holds 9 cells. Smaller grids can be finished fast. Larger ones take longer as you sort out the right arrangement.