(;GM[1]FF[4]SZ[19]
GN[Ko]
PC[http://senseis.xmp.net/?BeginnerExercise240/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise240/Solution

Ko]
PL[B]

AB[ba][bb][cb][eb][ac][cc][dc]
AW[fa][fb][bc][ec][fc][bd][cd][dd][be]

;B[da]C[B1]MN[1]
;W[ea]C[W2]MN[2]
;B[ab]C[B3]MN[3]
;W[db]C[W4]MN[4]

;
)
