(;FF[4]GM[1]CA[UTF-8]AP[besogo:0.0.2-alpha]SZ[9]ST[0]
AB[cf][cg][ch][ci][de][df][di][ee][fd][gd][hd][he][hg][hh][ie][if][ih]AW[dg][dh][ef][eg][ei][fe][ge][gf][gg][gh][hf]
C[Is W alive? Can B do anything about it?]
(;B[fi]
;W[fh]
;B[eh]SQ[ei]
C[Nice, ko! RIGHT])
(;B[gi]
;W[fh]LB[fi:A]
C[B cannot play at A])
(;B[fh]
;W[fg]
(;B[gi]
;W[eh]LB[fi:A]
C[B cannot play at A])
(;B[fi]
(;W[gi]
C[B is caught in a snapback!])
(;W[eh]LB[hi:A]
C[This too is possible but it does allow B to get A in sente])))
(;B[fg]
;W[fh]))