Section 4: Gameplay
- On your turn, drop one disc into any column that is not full.
- The disc falls to the lowest unoccupied slot in that column — you choose the column, never the row.
- Players alternate. There is no passing and no capturing.
Why the Centre Matters
The centre column participates in more possible four-in-a-rows than any other, which is why the solved first-player win begins there. Play is largely about creating two threats at once, since a single threat is always blockable.