Rex: It wasn't immediately obvious in my reading that the response to Q2 was O2. Thought initially that R1 and O2 were miai. Might be worth adding that response to the problem to make it clear.
VAN: I am a weak player.
Tell me please.
Why is my option wrong?
B - Q19
W - T19
B - R19
W - P18
B - Q18
W - O18
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error
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B - S17
W - 015(Q15)
B - T17
W - Q15(O15) or T18
B - T18 or O15(Q15)
d4rkm4tter: You're right, there was a mistake in the problem. I added a stone in the initial position.
I added D18 F18.