Eyes & Life
📋 What it is
An "eye" is an empty point fully surrounded by one colour; a group with TWO real eyes can never be captured.
🗣️ Coach says
Here is the magic rule of Go: a group that surrounds two separate empty points ("eyes") is ALIVE forever — the enemy can never fill both at once, so it can never take the last liberty. Making two eyes is how your stones become permanently safe.
🧠 Memory hook
Two real eyes = alive forever. The enemy can never fill both.
😂 Giggle
Why did the stone in atari feel nervous?
Because it had just one liberty left before capture!
😲 Whoa!
The two-eye rule is the single most important idea in Go — everything about attack and defense comes down to whether a group can make two eyes or be stopped from it.
✅ Quick check: Why can a group with two separate eyes never be captured?
Say your answer out loud first — then reveal.
To capture, the enemy must fill every liberty at once — but they can only place one stone per turn and can never legally fill both eyes, so a liberty always remains.
Two eyes leave two liberties the opponent can never remove simultaneously.
🪄 Trick question: Is a group with ONE big eye alive?
Careful — think it through, then reveal.
No — one eye (even a large one) can eventually be filled to capture the group; you need TWO separate eyes to be unconditionally alive.
Only two separate eyes guarantee a liberty that can never be removed.
🧪 Try it! (2 minutes)
Build a small group around two empty points and confirm the enemy can't legally fill both. It's alive.