(;GM[1]FF[4]SZ[19]
GN[White 4 at 'a', failure]
PC[http://senseis.xmp.net/?SnapbackProblem8/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SnapbackProblem8/Solution

White 4 at 'a', failure]
PL[B]

AB[db][ec][fc][gc][ed][fd][ee][ge][ff]
AW[cb][hb][cc][cd][hd][de][he][df][ef][gf][fg]

;B[hc]C[B1]MN[1]
;W[ic]C[W2]MN[2]
;B[id]C[B3]MN[3]
;W[jc]C[W4]MN[4]

;
)
