(;GM[1]FF[4]SZ[19]
GN[Divide and conquer]
PC[http://senseis.xmp.net/?BQM164]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM164

Divide and conquer]
PL[B]

AB[cc][fc][dd][dg]
AW[bd][cf][df][ci]
LB[ce:a][ef:b]

;B[cg]C[B1]MN[1]
;W[eg]C[W2]MN[2]
;B[bf]C[B3]MN[3]

;LB[ce:a][ef:b]
)
