Hard archive
Every past Hard puzzle, and only this one: each mode has its own sequence, so Hard #4 and Daily #4 are different figures. Today's is not listed, because it would give the answer away.
Play puzzle 0
Play puzzle 1
Play puzzle 2
Play puzzle 3
Play puzzle 4
Play puzzle 5
Play puzzle 6
Play puzzle 7- Play puzzle 8
Play puzzle 9
Play puzzle 10
Play puzzle 11
Play puzzle 12
Play puzzle 13
Play puzzle 14- Play puzzle 15
Play puzzle 16
Play puzzle 17- Play puzzle 18
Play puzzle 19
Play puzzle 20
Play puzzle 21
Images are public domain or openly licensed. Each one is credited on the Credits page.