Tom1980: Hi - after variation J12, G12, E12, L13, H13, K13, only F13 is shown as correct. But I think H12 and G13 work too[current position]
Ivan Detkov: I added your moves, they solve the problem, but I recommend avoiding such moves. Both are errors when it comes to a real game. They increase the value of ko-threats.
kovarex: After discussion with d4rkm4tter, I changed the problem to make all the variations where black wins the semi correct, regardless of the endgame differences.
d4rkm4tter: Oh ok so this problem consideres a one point loss as incorrect. We could say the Kano Yoshinori collections have to be played very accurate or accept situations like this as correct, as it is usually around this difficulty.
Met: This is what the "link position" put in in a blue branch. I guess kovarex should still fix it up a bit. Yes, I meant if B plays J13 and W F13 is the countermove, I believe.
Ivan Detkov: F13 is not good. M13 will take everything. J13 is not so bad. Answer M13 is mandatory. After that F13 ends it. Still J13 feels like a bad aji. This moves adds a complication and it does not achieve anything.
Met: There are many refused ways to take the stones, but only one has the comment that it is about points. It would be good to have more, or add a comment to the problem. When I didn't see the solution I wasn't sure what the problem was.
Some bad variants are not very obvious, like this one. [current position] + J13F13
Ivan Detkov: I do not understand. Do you mean F13 is an answer to J13 or an alternative?
I added your moves, they solve the problem, but I recommend avoiding such moves. Both are errors when it comes to a real game. They increase the value of ko-threats.