Puzzle Duel

Pick a kit — then 2–4 players take turns on one device. Same questions for everyone; highest first-try score wins.

Choose a kit

Kit 1: Tower of Hanoi Basics grades 4-5 · 25 questions Kit 2: Optimality & Move-Counting grades 4-5 · 25 questions Kit 3: Sliding-Tile Basics & Solvability grades 5-6 · 25 questions Kit 4: State-Space & Reachable Positions grades 5-6 · 25 questions Kit 5: Look-Ahead & Planning (Rush Hour) grades 5-6 · 25 questions Kit 6: River-Crossing & Constraints grades 5-6 · 25 questions Kit 7: Water-Pouring & GCD grades 6-7 · 25 questions Kit 8: Chinese Rings & Binary Counting grades 6-7 · 25 questions Kit 9: Peg Solitaire & Reduction grades 6-7 · 25 questions Kit 10: Recursion Deep-Dive grades 6-7 · 25 questions Kit 11: Parity Invariants Across Puzzles grades 6-7 · 25 questions Kit 12: Search Strategies (BFS/DFS intuition) grades 7-8 · 25 questions Kit 13: Constraint Satisfaction Deep-Dive grades 7-8 · 25 questions Kit 14: Optimality Proofs & Lower Bounds grades 7-8 · 25 questions Kit 15: Number Reasoning in Puzzles grades 7-8 · 25 questions Kit 16: Capstone — Cross-Puzzle Synthesis grades 7-8 · 25 questions