Vanishing Trio — how to play
Three active marks; the oldest disappears.
Objective
Put three of your marks in a line — horizontally, vertically or diagonally.
Rules and controls
- You take turns, but you only ever have three active marks.
- On your fourth and every later move your oldest mark disappears; small numbers show the order, 1 is the oldest.
- The mark with a dashed border labelled „Vanishes” is removed after your move — you cannot place a new mark on it in the same turn.
- In Computer mode you play X against O, locally two players share one device, online a room code or link is enough.
Practical tips
- Count in turns: a move that loses your oldest mark usually wrecks your own threat.
- Starts alternate in later rounds — the first move can be worth more than a pretty shape.