Challenges
68 challenges across eight tiers. Tier 8 is a warm-up; tier 1 will take an evening. Nothing is locked — play them in any order.
Mode
Tag
Tier 1 · Sorcerer55 points each
- The Last Match Losespar 20
Two piles of matchsticks. Each turn you take as many as you like from one pile, and whoever takes the last match loses. Match the positions that are already lost for the player about to move.
match - The Prime Detectorpar 11
You are given a string of 1s. Match it only when its length is a composite number — that is, not prime and not 1.
match