(
;
FF[4]
GM[1]
SZ[19]
AP[Jago:Version 4.16]
AB[cf][df][de][cn][dn][do][pd][pp]
AW[co][cp][dq][fq][ce][cd][dc][fc]
LB[cj:A][dj:B][pj:C][qj:D]
GN[goproblem_x02]
(
;
B[dj]
C[RIGHT
Creates a common base for the marked stones, and creates a moyo on the left side.]
TR[cf][df][de][cn][dn][do]
)
(
;
B[cj]
LB[ej:A]
C[The correct idea, but on the low side. White can reduce black's influence by playing at A.]
)
(
;
B[pj]
;
W[dj]
TR[cf][df][de][cn][dn][do]
C[The marked stones loses their base and comes under attack. Black's moyo on the right side will be affected.]
)
(
;
B[qj]
;
W[dj]
C[The marked stones loses their base and comes under attack. Black's moyo on the right side will be affected.]
TR[cf][df][de][cn][dn][do]
)
)