Can you do Hoo-Doo? This is a challenge for your brain because there are 28 solutions. The goal is to fill the 7 x 7 board with color pegs, but be careful: you cannot use the same color on the same line (horizontal, vertical, and diagonal).

If you are color blind, there is an option to put numbers on the pegs. As you find solutions, a progress bar shows your advancement. The High Scores also keep track of your best times. Try to do better each time! And don't stop after one solution. Find different solutions to develop your creativity in problem solving.

Play Hoo-Doo and brain improvement is guaranteed.