Connect Four
Line up four before the computer does.
Your move — you are red. Tap a column.
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Tap a column to drop your red disc; it falls to the lowest free square. Connect four of your discs in a row, a column or a diagonal before the computer's yellow discs do. Easy plays almost randomly, Normal looks a few moves ahead, Hard searches deep and rarely blunders.
Tips
- The centre column is worth the most: more lines pass through it.
- Watch for threats stacked on top of each other; a square you must not fill because it gives the opponent the square above is the classic trap.