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Rules

• Both players learn in this game, so switch color of stones after each game.
• White tries to capture that one black stone and/or its group.
• If white can capture that lonely black stone and/or its group, (s)he wins and game is over.
• If black makes alive group, (s)he wins and game is over.
• Otherwise rules are normal.

Alex: Sounds like the Shape Game to me.