(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[5.50]
GN[White (W) vs. Black (B)]PW[White]PB[Black]DT[1999-07-28]SY[Cgoban 1.9.2]
;AW[qa][sa][lb][mb][ob][qb][rb][nc][oc][pc][qc][md][me][re][se][nf][pf][rf][pg][rg][ph][pi][qi][ri][si]AB[na][pa][kb][kc][lc][mc][rc][nd][od][pd][qd][rd][qe][qf][qg][sg][qh][rh][sh]C[white to kill
]PL[W]
(;W[sf]
;B[oa]C[good start: you must first make a dead shape on the right. now what?
]
(;W[la]
;B[nb]C[black plays here to stop white getting a seki on top
]
(;W[pb]
;B[ka]
(;W[ma]
;B[oa]
(;W[sb]
;B[nb]
(;W[pa]
;B[na]
;W[mb]C[RIGHT
white plays under the stones and saves the day
])
(;W[na]
;B[nb]
(;W[mb]
;B[ma]C[ko
])
(;W[pa]
;B[mb])))
(;W[na]
;B[nb])
(;W[nb]
;B[sd]
(;W[rf]
;B[sb]C[ko
])
(;W[sb]
;B[rf]))
(;W[pa]CR[pa]
;B[na]CR[na]
(;W[sb]CR[sb]
;B[nb]CR[nb]
;W[mb]CR[mb]C[RIGHT])
(;W[nb]CR[nb]
;B[sd]CR[sd]
;W[rf]CR[rf]
;B[sb]CR[sb]C[ko])))
(;W[sb]
;B[ma]))
(;W[sb]
;B[ka]
(;W[pb]
;B[ma])
(;W[sc]
;B[sd]))
(;W[ma]CR[ma]
;B[ka]CR[ka]))
(;W[ma]
;B[sd]
;W[rf]
;B[sb]C[ko for one white eye on top
])
(;W[nb]
;B[la]
;W[ma]
;B[sd]
;W[rf]
;B[sb]C[ko for one eye on top for white
]))
(;W[nb]
;B[sf])
(;W[la]
;B[sf])
(;W[oa]
;B[sf])
(;W[ma]
;B[sf]))