(;GM[1]FF[4]SZ[19]
GN[Ko instead]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem12/Solution]AP[GoWiki:2009]
DT[2011-12-10]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem12/Solution

Ko instead]
PL[W]

AB[bb][cc][dc][ec][fc][dd]
AW[bc][hc][ad][cd][ed][fd][gd][be][ce][de]

;W[gb]C[W1]MN[1]
;B[fb]C[B2]MN[2]
;W[ab]C[W3]MN[3]
;B[db]C[B4]MN[4]
;W[ba]C[W5]MN[5]
;B[ca]C[B6]MN[6]
;W[cb]C[W7]MN[7]

;
)
