(;GM[1]FF[4]SZ[19]
GN[if White a...]
PC[http://senseis.xmp.net/?KyuExercise40/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise40/Attempts

if White a...]
PL[W]

AB[ga][ha][ab][fb][gb][ac][bc][cc][ec][fc][cd][dd][ed]
AW[ca][ia][bb][cb][db][eb][hb][ib][gc][hc][ad][bd][fd][gd][ae][ce][ee][bf][cf][ef]

;W[aa]C[W1]MN[1]
;B[dc]C[B2]MN[2]
;W[fa]C[W3]MN[3]

;
)
