(;GM[1]FF[4]SZ[19]
GN[This way?]
PC[http://senseis.xmp.net/?UnderTheStonesProblem13/Solution]AP[GoWiki:2009]
DT[2014-08-19]
C[Diagram from http://senseis.xmp.net/?UnderTheStonesProblem13/Solution

This way?]
PL[B]

AB[fa][ab][cb][db][fb][bc][dc][ec][fc][bd]
AW[ba][ea][bb][gb][cc][gc][cd][ed][fd][gd][ae][be][ce]

;B[ac]C[B1]MN[1]
;W[ad]C[W2]MN[2]
;B[ca]C[B3]MN[3]
;W[aa]C[W4]MN[4]

;
)
