MindProof

A little collection of good puzzles

Five original puzzles, each with an answer and an explanation. The daily page rotates through this collection.

02

A square has corners A, B, C, D in clockwise order. Starting at A, move clockwise by six corners. Where do you finish?

Check answer

03

A lamp starts off. Each press changes its state. You press the switch 17 times, then 8 more times. Is it on?

Check answer

05

Two boxes and one ball weigh 17 units. One box and one ball weigh 10. What does the ball weigh?

Check answer