Pianoman: I may have mixed up black and white because of the colour switch
Ivan Detkov: Your diagram is seki - no points or one point to each side. The correct answer gives 3 points to the corner group for the expense of a stone, which is 2 points.
Pianoman: I don’t understand why this isn’t better for white. Here white gets one point and black gets 3. In the ‘correct’ answer, they both get three points. What am I missing?[current position] white also gets sente here.
Sadaharu: How did you calculate that they both get three points in the correct answer?
Also, in a seki both side has no points in Japanese rules and Korean rules, but that is beside the point here.
Your diagram is seki - no points or one point to each side. The correct answer gives 3 points to the corner group for the expense of a stone, which is 2 points.