Black A would have killed the white group, but after the marked stone, white can live. Should he do this at the right side or in the corner?!
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[7]KM[0.50]TM[]
AW[ba][bb][bc][dc][bd][dd][ed][ae][be][ee][df][ff][dg]AB[ca][cb][db][eb][cc][ec][cd][ce][de][af][bf][cf][cg][eg]LB[fg:A]TR[eg]C[No komi, no prisoners - White to play and draw!]PL[W]
(;W[ef]CR[ef]
;B[fd]CR[fd]
(;W[ge]CR[ge]
;B[gd]CR[gd]
;W[fe]CR[fe]
;B[fc]CR[fc]C[Jigo! RIGHT])
(;W[fe]CR[fe]
;B[fc]CR[fc]
(;W[ge]CR[ge]
;B[gd]CR[gd]C[Jigo! (In this position, it doesn't matter, but normally it's better to play g3 first, then f3) RIGHT])
(;W[gd]CR[gd]
;B[ge]CR[ge]
(;W[gf]CR[gf]
;B[fg]CR[fg]C[White is dead!])
(;W[fg]CR[fg]
;B[gf]CR[gf]
;W[gg]CR[gg]
;B[ge]CR[ge]C[White is dead!]))
(;W[fg]CR[fg]
;B[ge]CR[ge]
;W[gf]CR[gf]
;B[gd]CR[gd]C[Black wins by two points!]))
(;W[fc]CR[fc]
;B[fb]CR[fb]
(;W[fe]CR[fe]
;B[gc]CR[gc]
;W[ge]CR[ge]
;B[gd]CR[gd]C[Jigo! ( Of course, there was no need to 'sacrifice' a stone) RIGHT])
(;W[ge]CR[ge]
;B[gd]CR[gd]
;W[fe]CR[fe]
;B[gc]CR[gc]C[Jigo! (Of course, there was no need to 'sacrifice' a stone) RIGHT]))
(;W[fg]CR[fg]
;B[ge]CR[ge]
;W[gf]CR[gf]
;B[fc]CR[fc]
;W[fe]CR[fe]
;B[gd]CR[gd]C[Black wins by two points!]))
(;W[fc]CR[fc]
;B[ef]CR[ef]
(;W[fb]CR[fb]
;B[fg]CR[fg]
(;W[fe]CR[fe]
(;B[fa]CR[fa]
;W[gd]CR[gd]
;B[gf]CR[gf]
;W[gb]CR[gb]C[Black wins by one point!])
(;B[gf]CR[gf]
;W[ge]CR[ge]
;B[fa]CR[fa]
(;W[gb]CR[gb]
;B[gd]CR[gd]C[White is dead!])
(;W[gd]CR[gd]
;B[gb]CR[gb]C[White is dead!])))
(;W[gf]CR[gf]
;B[fa]CR[fa]
(;W[gd]CR[gd]
;B[fe]CR[fe]
;W[fd]CR[fd]
;B[gb]CR[gb]C[White is dead!])
(;W[fd]CR[fd]
;B[gb]CR[gb]
(;W[gc]CR[gc]
;B[ge]CR[ge]C[White is dead!])
(;W[ge]CR[ge]
;B[gc]CR[gc]C[White is dead!]))
(;W[gb]CR[gb]
;B[fd]CR[fd]
;W[fe]CR[fe]
;B[gd]CR[gd]C[White is dead!]))
(;W[ge]CR[ge]
;B[fd]CR[fd]
;W[fe]CR[fe]
;B[gd]CR[gd]
;W[gc]CR[gc]
;B[fa]CR[fa]C[White is dead!]))
(;W[fg]CR[fg]
;B[fb]CR[fb]
(;W[fd]CR[fd]
;B[gc]CR[gc]
;W[ge]CR[ge]C[Black wins by three points!])
(;W[gc]CR[gc]
;B[fe]CR[fe]
;W[fd]CR[fd]
;B[ge]CR[ge]C[White is dead!])))
(;W[fg]CR[fg]
;B[ef]CR[ef]
;W[fc]CR[fc]
;B[fb]CR[fb]
(;W[fd]CR[fd]
;B[gc]CR[gc]
(;W[gd]CR[gd]
;B[ge]CR[ge]C[White is dead!])
(;W[ge]CR[ge]C[Black wins by three points!]))
(;W[gd]CR[gd]
;B[gb]CR[gb]
;W[fd]CR[fd]
;B[gc]CR[gc]
;W[ge]CR[ge]C[Black wins by three points!])
(;W[gc]CR[gc]
;B[fe]CR[fe]
;W[fd]CR[fd]
;B[ge]CR[ge]C[White is dead!])))