(;FF[4]GM[1]CA[UTF-8]AP[besogo:0.0.2-alpha]SZ[19]ST[0]
AB[ad][bd][cd][cg][ci][dc][df][dg][dh][di][ed][ee][eg][fc][fg][fh][gb][gc][hb][he][hf][hg][hj][ic][if][jb][jc][jf][jh][ji][kb][kf][ki][lb][lf][lg][li][lj][mb][mc][md][mh][mi]AW[ae][bf][bg][bh][bi][bj][ce][cf][ch][cj][dd][de][dj][eh][ej][fe][gd][ge][gi][hc][hd][hi][ib][id][ie][ig][ih][ii][jd][je][jg][jj][kc][ke][kg][kh][kj][lc][ld][le][lh][me][mf][mg]SQ[if][jf][kf]TR[lh]
C[Late endgame, turns out this move was a threat to capture, because...]
(;W[gg]
(;B[gh]
(;W[ff]
;B[ef]
(;W[hh]SQ[hf]
C[Right, black is caught in snapback! RIGHT])
(;W[gf]
;B[hh]))
(;W[hh]
;B[gf]
;W[ff]
(;B[ef]
;W[gg]
C[Right! RIGHT])
(;B[gg]
;W[ef]
C[RIGHT]))
(;W[gf]
;B[hh]))
(;B[gf]
;W[ff]TR[ef][gh]
C[RIGHT]))
(;W[ff]
(;B[ef]
;W[gg]
;B[gh]
(;W[hh]
C[Right! RIGHT])
(;W[gf]
;B[hh]))
(;B[gg]
;W[ef]
C[RIGHT]))
(;W[gf]
;B[gg])
(;W[gh]
;B[gg]))