(;GM[1]FF[4]SZ[19]
GN[Opportunity.]
PC[http://senseis.xmp.net/?BeginnerExercise135/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise135/Solution

Opportunity.]
PL[B]

AB[ba][bb][fb][gb][bc][fc][cd][dd][ed][df]
AW[ca][da][cb][eb][ib][cc][dc][ec][gc][hc][jc][fd][fe]
LB[fa:a]

;B[ga]C[B1]MN[1]
;W[hb]C[W2]MN[2]
;B[ea]C[B3]MN[3]

;LB[fa:a]
)
