In this position, most of the action takes place inside the groups....
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[7]KM[0.50]TM[]
AW[ea][fa][ga][ab][bb][eb][cc][dc][ec][dd][gd][de][df][dg][eg]AB[da][fb][gb][ac][bc][fc][cd][ed][fd][ae][be][ce][fe][cf][ef][fg]C[No komi, no prisoners - White to play and draw!]PL[W]
(;W[gf]CR[gf]
(;B[ff]CR[ff]
(;W[ge]CR[ge]
(;B[ba]CR[ba]
;W[cb]CR[cb]
;B[ca]CR[ca]
(;W[bg]CR[bg]
;B[cg]CR[cg]
(;W[af]CR[af]C[The third seki (Black can't play B b2 because of W a4 or W b4) - and a jigo! RIGHT])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[af]CR[af]C[Black wins by one point! There was no need to sacrifice a stone....])
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[af]CR[af]C[Black wins by one point! There was no need to sacrifice a stone....]))
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by 1 point! There was no need to sarifice a stone...])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by one point! There was no need to sacrifice a stone....])
(;W[cg]CR[cg]
;B[bg]CR[bg]C[Black wins by five points!]))
(;B[cg]CR[cg]
;W[ca]CR[ca]C[This is also a jigo.]))
(;W[ca]CR[ca]
(;B[ge]CR[ge]
(;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Jigo! RIGHT CHOICE])
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by one point! There is no need to sacrifice a stone....])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by one point! There is no need to sacrifice a stone...]))
(;B[cg]CR[cg]
;W[ge]CR[ge]C[Jigo! RIGHT CHOICE]))
(;W[cb]CR[cb]
(;B[ge]CR[ge]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Jigo! RIGHT CHOICE])
(;B[cg]CR[cg]
;W[ge]CR[ge]C[Jigo! RIGHT CHOICE])))
(;B[ge]CR[ge]
;W[ff]CR[ff]
;B[gg]CR[gg]
;W[ff]CR[ff]
(;B[ee]CR[ee]
;W[gf]CR[gf]C[Black is dead - there is no time for B f1])
(;B[gf]CR[gf]
;W[ee]CR[ee]C[Black is dead!])))
(;W[ee]CR[ee]
;B[ff]CR[ff]
(;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]
;B[cb]CR[cb]C[Uh-oh.... ATARI!])
(;W[ca]CR[ca]
;B[cg]CR[cg]C[This is a 6 point loss for white.])
(;W[cg]CR[cg]
;B[cb]CR[cb]C[White is dead!]))
(;W[bg]CR[bg]
;B[cg]CR[cg]
(;W[af]CR[af]
;B[cb]CR[cb]C[White is dead!])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[af]CR[af]
;B[cb]CR[cb]C[White is dead!])
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[af]CR[af]
;B[cb]CR[cb]C[White is dead!]))
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]
;B[cb]CR[cb]C[White is dead!])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]
;B[cb]CR[cb]C[White is dead!])
(;W[ca]CR[ca]
;B[ee]CR[ee]
(;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by one point!])
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by two points!])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[bg]CR[bg]
;B[cg]CR[cg]
;W[af]CR[af]C[Black wins by two points!]))
(;W[cb]CR[cb]
;B[ee]CR[ee]
;W[bg]CR[bg]
;B[cg]CR[cg]
(;W[af]CR[af]C[Black wins by one point!])
(;W[ad]CR[ad]
;B[bd]CR[bd]
;W[af]CR[af]C[Black wins by two points!])
(;W[bd]CR[bd]
;B[ad]CR[ad]
;W[af]CR[af]C[Black wins by two points!]))
(;W[cg]CR[cg]
;B[bg]CR[bg]
(;W[ee]CR[ee]
;B[ff]CR[ff]
(;W[cb]CR[cb]C[Black wins by five points!])
(;W[ca]CR[ca]C[Black wins by five points!]))
(;W[gf]CR[gf]
;B[ff]CR[ff]
;W[ge]CR[ge]
;B[cb]CR[cb]C[White is dead!])))