(;GM[1]FF[4]SZ[19]
GN[White extends, Black invades?]
PC[http://senseis.xmp.net/?FusekiExercise10/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?FusekiExercise10/Attempts

White extends, Black invades?]
PL[B]

AB[bc][cc][ec][bd][dd][ed][fd][pd][de][bf][df][bg][cg][pj][pp]
AW[db][eb][dc][fc][gc][cd][gd][ce][fe][cf][dg][eg][ch][dp][jp]
LB[me:a][bh:x]

;B[mq]C[B1]MN[1]
;W[mc]C[W2]MN[2]
;B[jc]C[B3]MN[3]

;LB[me:a][bh:x]
)
