Truchet Puzzle
Rotate and reflect rows and columns to match the target pattern
Fence Maxing
Build enclosed areas with pentominoes or tetrominoes
Moduloku
A puzzle from Natural Math
Walled Gardens
Design scoring rules, then build walled gardens with pentominoes to maximize your score
Threes on a Chessboard
Sweep cells three at a time and try to fill the whole board.
Giving Dither
Guess what percent is shaded, then dither to check
sumFib
Slide tiles; combine adjacent pairs whose sum is a Fibonacci number
Twos on Grids
Place dominoes on grids — play Partizan, Impartial, Scorch, or explore freely
Logic Grid
Create and share logic grid puzzles with icons
Triple Logic
Find the three triples that match every item once
Five Squares
Drag squares to form pentomino shapes