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

Under the stones]
PL[B]

AB[ca][fa][cb][db][fb][dc][ec][fc]
AW[aa][ba][ea][bb][gb][cc][gc][ad][cd][ed][fd][gd][ae][be][ce]
LB[bd:a]

;B[bc]C[B5]MN[5]
;W[ac]C[W6]MN[6]
;B[ab]C[B7]MN[7]

;LB[bd:a]
)
