Connect Four Trainer

Connect Four Strategy Guide

1. The Odd/Even Rule (Parity)

Red (Player 1) wants to win on Odd Rows (1, 3, 5).
Yellow (Player 2) wants to win on Even Rows (2, 4, 6).

Why? As the board fills up, you naturally claim the slots matching your parity. If you are Red, you cannot force a win on Row 4 unless Yellow helps you.

2. Zugzwang (The "Squeeze")

In the endgame, players run out of "good" moves. Zugzwang is when every possible move you make loses the game immediately. You are forced to commit suicide because you cannot pass your turn.

3. Common Traps

• The "7": A shape combining a horizontal 3 and a diagonal 3. Creates two threats at once.
• Double-Ended: _ R R R _. If they block left, you win right.
• The Force: Playing a threat that forces the opponent to block exactly where you want them to be.