Light to move. 19 stones are on the board, 10 dark and 9 light.
Make five in a line within 4 moves. Every move of the solution is a four, so the opponent's answers are forced.
What the position is about
- chain of fours — Each move of the solution makes a four, so every reply is forced.
- open four — The final shape is four in a row with both ends free, which cannot be blocked.
- forcing sequence — The solution is a series of threats, each one leaving the defence a single answer.
Finding the way in
Four-move wins chain fours across two or three directions. Try each four you can make and see where the forced block sends the defence.
Before you touch a piece, list every forcing move you have and every threat the opponent has; the answer is almost always on that short list.
Show the first move
Start with l7. Played out against the stiffest resistance, the whole line goes: l7 j9 k7 h7 k5 k9 k4.
Solve it and the next puzzle of the same game is one tap away. Your solved puzzles are ticked in the list, in this browser only.