(;
GM[1]
SZ[19]
AW[dc][oc][qj][qo]
AB[qd][pe][pq][cp]
TR[qj]
C[Problem 28. Black to play.  

After White has extended with her marked stone, what should Black do ? ]
(;B[op]
LB[np:A]

TE[2]
C[Correct Answer.  

Black should play another diagonal move with 1 or play the knight's move at A. ]
)
(;B[np]
TE[2]
C[Correct Answer.  

Also correct. ]
)
)