Very difficult. After finally figuring it out, I started giving different tasks to try out. For example, no two pieces of the same color can touch. Or try to move all black stones vertically or horizontally without touching each other. The possibilities go on and on. I like to challenge my brain as it is supposed to help it stay young. (I'm almost 80 but I'm still trying.) It's a lot of fun and a good conversation starter when it's on the table for others to see and try.
New Speed Cube Set - 5 Pack Magic Cubes Collection For Kids - Pyramid, Megaminx And More!
37 Review
Get Ahead With Vdealen'S 8-Pack Of Exceptional Speed Cubes! Ideal Gift For Teens, Kids, And Adults On Christmas And Birthdays!
24 Review
Engage Your Child'S Curiosity With The 5 In 1 STEM Kit - The Perfect Educational Building Toy For 8-12 Year Old Boys And Girls
36 Review
ROBOTIME 3D Wooden Puzzle Mechanical Gear Clock Owl Model Kit For Teens & Adults - DIY Building Set
36 Review
100-Piece Under The Sea Glow-In-The-Dark Puzzle For Kids Age 5+ - Colorful Illustrations Of Underwater Fish, Plants, And Sea Creatures - Award-Winning And Perfect For Learning And Play
12 Review
Explore The Arctic With Mudpuppy'S Colorful 64 Piece Puzzle For Kids - Find 40+ Hidden Images Of Animals, Fish, And Birds Living In The Arctic!
25 Review
1000 Piece Mandala Jigsaw Puzzle - Creative Colorful Black Fantasy Bgraamiens Color Challenge Puzzle
17 Review
BeginAgain Butterfly A To Z Puzzle - Educational Wooden Alphabet Puzzle - Kids 2 And Up
12 Review