(;GM[1]FF[4]SZ[19]
GN[Solution.]
PC[http://senseis.xmp.net/?RTGProblem30/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem30/Solution

Solution.]
PL[W]

AB[cc][cd][ed][be][ce][ee][af][cf]
AW[fb][dc][ec][gc][fd][bf][df][ff][bg][cg]

;W[ba]C[W1]MN[1]
;B[bb]C[B2]MN[2]
;W[da]C[W3]MN[3]

;
)
