EVENT
BOARDSIZE 19
SETUP W D18 E18 E16 F16 G16 M17 R11 Q7 R6 Q5 D4 D10 
SETUP B C18 B17 D17 D16 E15 F15 G17 O17 Q16 R16 R5 R4 Q3 O3 R13 
MARK \t@R13
COM
Supplement to Problem 13: The joseki.

When the marked stone is in place, ...
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B 1 R8
USER
CORRECT ANSWER
ENDUSER
COM
... Black 1 is the start of a middle-game joseki (See Get Strong
at Invading, Problems 27, 30, 33, 36, 39, and 42.).
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W 2 S7
COM
After White 2, ...
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B 3 Q10
MARK A@S10
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... Black 3 or A are joseki moves.
<=
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