This sliding block puzzle gives your brain a workout without screens or batteries, making it a solid pick for road trips or a quiet distraction at home, and it's currently $8.96 off the $19.90 list price. Apply coupon code "OMU90CT5" to save. Deal ends Novemebr 20. Buy Now at Amazon Features 100+ logical brain challenges for all skill levels Two-player competitive mode for interactive social play Durable storage lid prevents losing game pieces Non-toxic ABS material with safe rounded edges Educa