(;GM[1]FF[4]SZ[19]
GN[Solution (B7 at B1)]
PC[http://senseis.xmp.net/?GokyoShumyoSection3Problem55/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection3Problem55/Solution

Solution (B7 at B1)]
PL[B]

AB[fc][hc][ic][ed][gd][id][ee][ie][ef][if]
AW[eb][fb][hb][ib][dc][jc][kd][ce][ge][df][jf][eg][fg][gg][hg][ig]

;B[gf]C[B1]MN[1]
;W[ff]C[W2]MN[2]
;B[fe]C[B3]MN[3]
;W[hf]C[W4]MN[4]
;B[he]C[B5]MN[5]
;W[ec]C[W6]MN[6]
;B[gf]C[B7]MN[7]

;
)
