Square 1

Replace these 13 different shaped blocks back into square tray. There are approximately 60 combinations for this 8 x 8 puzzle - all are right but just finding one is hard! This is a fantastic starter puzzle that keeps giving. Challenges are endless, try making a 6×10 rectangle (over 2000 solutions). A 3×20 rectangle has 2 solutions, 4×15 rectangle 300 plus,  a 5×12 rectangle (over 1000 solutions). Get outside the square and make cube shape variations.  

15.0 x 15.0 x 2.5 cm