The El Castillo puzzle from Project Genius offers a unique experience inspired by the ingenuity of the ancient Maya. Inspired by the Temple of Kukulcán at Chichen Itza, it is designed based on the architecture and astronomical precision of the Maya civilization.

Key features:

• 91 steps on each side, totaling 365 with the top, symbolizing the calendar year.
• Creates perfect alignment with the solstices, forming the shadow of the feathered serpent, the deity Kukulcán.
• The challenge is to align the blocks so that each side sums to 91.
• Combines mathematical accuracy with a rich cultural background.

The puzzle's difficulty rating is 5/5, offering an engaging and captivating experience for history and puzzle enthusiasts.