(;
GM[1]
SZ[19]
AW[nc][fc][jd][ch][ce][dj][cn][ec][gd][hd][cf][oj][pb][qb][qc][rb]
AB[dp][pd][pp][dd][df][pf][jq][eg][fp][qj][ed][cd][fd][ge][bp][ph][pc][qd][rc]
LB[bp:1][oj:2][ph:3][qc:4][pc:5][pb:6][qd:7][rb:8][rc:9][qb:10]
C[Problem 107. Black to play.  

The game in Problem 103 continued with the sequence to White 10. Where should Black play next ? ]
(;B[me]
LB[mc:A]

TE[2]
C[Correct Answer.  

Black should jump to 1 to build influence facing the bottom and to stop White from expanding her territory at the top. Since Black is threatening to attach at A, ... ]
;W[ld]
C[... White will defend with 2. ]
;B[dc]
C[Next, Black should secure his stones in the upper left corner with 3. <= ]
)
(;B[ne]
C[How the game continued.  

Compared with the Correct Answer, Black 1 was lukewarm. It didn't have a good follow-up against White's position at the top. ]
;W[jo]
C[White switched to the bottom and capped with 2. ]
;B[mc]
C[If Black next attached at 3, ... ]
;W[md]
LB[rd:A]
C[... White could counterattack with 4 and fight fearlessly because, if her stones in the upper right corner get cut off, she can always live by capturing a stone at A. <= ]
)
)