Beginners try to build their own five. Strong players build threats — positions that force the opponent to respond — and win by stacking two threats the opponent can't block at once. Once you see Caro this way, you stop losing to it.

1. Take the center

The center gives your stones the most directions to grow (horizontal, vertical, both diagonals). Opening near the middle is almost always correct; opening in a corner throws away half your potential lines.

2. Learn the "open three"

An open three is three of your stones in a row with both ends empty ( _ X X X _ ). It threatens to become an open four, which is unstoppable. Creating an open three forces your opponent to defend — which means you control the tempo.

3. Always block an opponent's open three

If you ignore an open three, your opponent makes an open four next move and wins. Blocking is not optional. The only time you skip the block is when you have a winning threat of your own that is faster.

4. Hunt for the double threat

This is how games are actually won. Place a stone that creates two open threes at once (a "double three") or a three and a four. Your opponent can only block one. The whole game is really a hunt for that single double-threat move.

5. Don't build in a straight line

Stacking five in an obvious straight line is the easiest thing to block. Build with bends and branches so a single one of your stones contributes to two or three potential lines at the same time. Flexible shapes create more threats.

6. Count before you commit

Before each move, scan: Do I have a four? Does my opponent have a four? Do I have an open three? Do they? Fours first, then open threes, then development. This 10-second checklist alone will stop most of your losses.

7. Watch the whole board, not your last move

Threats can form across the board, not just where you are currently fighting. Players lose constantly because they tunnel on one corner while the opponent quietly sets up a double threat elsewhere.

Practice plan

Play a few quick games focusing on just one idea at a time — one session only hunting double threes, one session only practicing blocks. Patterns become instinct faster than you expect. Then invite a friend, share a room code, and put it to the test.