Capture in Go: How Stones Are Actually Removed

⏱ Read ~6 min · Updated July 2026 · Part of: Learn Go

Capturing is the most satisfying moment in Go — you squeeze the last liberty out of an enemy group and it vanishes from the board. The rule is small; the skill is seeing when it happens, how many stones go at once, and one ordering rule that trips beginners up (capture beats suicide).

1. The capture rule, in one sentence

Your stone fills the last liberty of an enemy group, and that group is captured — removed from the board entirely.

🫁 Analogy: a group is a balloon; liberties are the air inside. Squeeze out the last bit of air and the balloon pops — stones gone.

2. A concrete demo: the moment of capture

See it directly. Here's an entry-level position from the brainGO engine — white has one liberty, Black captures it in 1 move:

Count liberties: White (0,0) — its neighbors are (0,1), a black stone, and (1,0), an empty point. So white has only 1 liberty (at (1,0)) — it's in atari. Black plays (1,0), fills it → white drops to 0 → captured, removed, and Black occupies (1,0). That's the whole capture process: fill the last liberty → enemy hits 0 → remove.

🔬 This "1-move capture" is verified by the brainGO engine at build time: Black can capture (0,0) in one move, the solution is unique.

3. One move can capture several groups at once

Beginners often capture one group and stop. Don't — a single move can fill the last liberty of two or more enemy groups at once, removing them all.

Why it happens: the point you play may be a neighbor of several enemy groups at once. If those groups were all down to that one shared point as their last liberty, your move drops them all to 0, and they're all captured simultaneously.

🎯 The reflex: after every move that touches the opponent, scan all adjacent enemy groups. Did any drop to 0 liberties? Remove each one — not just the one you were watching. Missing an adjacent second group is a common beginner error.

This is the advanced form of double atari: double atari is "one move puts two groups at one liberty"; this is "one move actually captures two groups."

4. Capture beats suicide (the ordering rule)

This rule trips up many beginners: resolve captures first, then check whether your own stones are suicide.

Imagine your move would leave your own stones with no liberties — but the same move also captures an adjacent enemy group. What happens?

✅ The opponent is removed first. Once they're gone, your stone suddenly has liberties again (the points they occupied are now empty). So your stone lives — the move is legal.

The only illegal move is one that leaves your stones with no liberties and captures nothing — that's the suicide rule. Because capture is resolved first, suicide actually rarely happens (most moves that look like suicide also capture something, and are therefore legal).

5. Count through a capture (two cases)

Case A: capturing a single stone. A lone white stone in the corner has 2 liberties. Black fills the two neighbors over two moves:

• After move 1: 1 liberty left → white is in atari.
• After move 2: 0 liberties → white is captured, removed. Black takes the point.

Case B: capturing a group. Two connected white stones in the corner share 2 liberties. Black fills both → the entire two-stone group is captured at once. Connecting didn't save them — because the whole group shares the same limited liberties (see the shared-liberty rule in liberty).

→ The key: capture is counted per group. A group lives as long as it has one empty neighbor; only when all are filled is the whole group removed.

6. The 4 most common capture mistakes for beginners

1. Not scanning all adjacent enemy groups. After moving, you only watch the main target and miss that an adjacent group also dropped to 0 → missed capture (or missed being captured). Build the "scan all neighbors after moving" reflex.
2. Misjudging suicide. Assuming "this move leaves me with no liberties = illegal," when actually it also captures the opponent → legal. Remember: resolve capture first, then suicide.
3. Not counting shared liberties. Two connected enemy stones share liberties (not counted separately). Miscounting leads to wrong capture decisions.
4. Not capturing when you could. If the opponent is in atari and you can capture, usually just capture (unless there's a higher strategic reason). Free stones left on the board are waste.

7. Why capture is the core of beginner Go

On a 4×4 board there's nowhere to hide — stones meet and fight almost immediately, and nearly every game is a series of small capture battles. That's why the beginner variant capture go ("first to capture a stone wins") is so effective: it strips Go down to this one skill. brainGO's 4×4 tsumego go further — every puzzle is a "capture the opponent within N moves" calculation, with the correct answer proven by the engine.

How to train it

Reading about capture is the slow way to learn. Capturing your first stone with instant feedback takes seconds.

👉 Play brainGO — capture your first group

FAQ

Can one move capture several groups at once?

Yes. If the point you play is the last liberty of multiple enemy groups simultaneously, they all drop to 0 and are all captured. After moving, scan all adjacent enemy groups so you don't miss any.

Why are moves that look like suicide sometimes legal?

Because "capture beats suicide": first resolve which enemy groups your move captures, then check whether your stones have liberties. If you captured an enemy and your stones gain liberties once they're removed, the move is legal. Only "leaves you with no liberties and captures nothing" is the suicide rule.

How do you capture a whole group at once?

A group's liberties are shared. Fill every empty point around the entire group, and the whole group drops to 0 and is removed at once. Not one stone at a time.

What's the difference between capture go and full Go?

Capture go is the beginner variant "first to capture an enemy stone wins" — it trains only the capture skill. Full Go also has territory, life and death, and scoring. See capture go vs full Go.

Related guides

• Learn Go: the visual beginner's guide — the beginner hub (this article's home)
• Liberty — the breath capture takes away
• Atari — the alarm one step before capture
• Connect and cut — shared liberties and defense
• Capture-go training — drill capture into a reflex
• Capture go vs full Go — the variant difference
• The rules of Go — full rules (including the suicide rule)