Each board opens face-up for a quick peek. Memorise where the symbols are — then the cards flip over and you find every pair from memory.
Each pair scores 10, plus 2 more for every pair in a row without a miss. A mismatch costs 3 and resets the combo. Clearing a board earns 20 — and another 20 if you made no mismatches. Clear boards perfectly in a row to build a streak.
Remembering what was where binds two pieces of information together — the same skill behind remembering names with faces, or where you left your keys.
A few seconds to take in a whole board trains you to scan and store a scene quickly and deliberately.