Prototypes
Candidates for our third educational puzzle — rough, playable, and open for feedback.
Ric-Pac-Soe taught adversarial strategy; Triad taught attribute logic and the cost of a greedy move. Each prototype below is built the same way — deterministic, seed-addressable, solvable by construction — but tries to teach something the first two don't. Play them, share a seed, and tell us which one deserves to graduate.
Parity
Lights-Out on a small grid. Turn every cell dark — and discover that the order of your presses never mattered. Teaches XOR, parity, and commutativity.
Odd Coin Out
One fake coin, a balance scale, and just enough weighings. Teaches information — a three-way question answers 3k cases.
Rule Lab
A hidden rule sorts 1–30. Test numbers, refute hypotheses, commit to one. Teaches the scientific method: one counterexample is enough.