Each round rewards accuracy, speed, and memory while discouraging brute‑force guesses. Here’s the exact rubric.
Factor = 0.70k‑1 (k = number of guesses). One‑shot solves keep full value; each extra guess cuts points by 30 %.
Factor = e−0.05 t where t is seconds until your first perfect solve. Faster answers mean less decay.
Factor = 1 − u / 2 with u repeats of items already marked wrong. Re‑clicking locked items can zero this factor.
Factor = c / 4 (c = most correct items found before time ran out). Even if you don’t finish, you still score proportionally.
Base = 100 × Attempts × Speed × Memory × Partial
When you lock in the full solution, add 20 ⁄ rank. Examples: 1st = +20, 2nd = +10, 3rd ≈ +6.7. The bonus tapers as the leaderboard grows, so late solves gain only fractions of a point.
Round Score = Base + Finish Bonus
Perfect, first‑try, under 5 s ≈ 100 pts. A 50‑guess spam‑bot ≈ <5 pts.