(;GM[1]FF[4]SZ[19]
GN[Black surrounded]
PC[http://senseis.xmp.net/?SnapbackProblem22/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SnapbackProblem22/Solution

Black surrounded]
PL[W]

AB[ec][ad][cd][dd][ed][ae][be][cf][dg][eg][fg][fh][ai][di][ei][fi][bj][cj][dj]
AW[fa][eb][gb][ac][bc][cc][dc][fc][bd][fd][fe][df][ef][ff][hf][gg][eh][hh][aj][gj][hj][ak][bk][ck][dk][ek][fk]

;W[bg]C[W1]MN[1]
;B[bh]C[B2]MN[2]
;W[cg]C[W3]MN[3]
;B[ch]C[B4]MN[4]
;W[ce]C[W5]MN[5]
;B[de]C[B6]MN[6]
;W[bf]C[W7]MN[7]

;
)
