(;SZ[19]AW[ep]AW[bq]AW[cq]AW[eq]AB[do]AB[eo]AB[fo]AB[bp]AB[cp]AB[fp]AB[gq]AB[hq]GE[life and death]DI[3k]DP[27]SO[traveller]CO[5]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]PW[White]PB[Black]
(;B[er]
(;W[dr];B[fr];W[bs]
(;B[ar];W[aq]
(;B[ds];W[cs];B[br]C[Cleanly killed.RIGHT])
(;B[br];W[ds];B[cr]C[This is not a seki because white's main group is not connected to the liberty at a1.RIGHT])
(;B[cs];W[ds]))
(;B[ds];W[ar];B[cr];W[dq];B[cs]C[RIGHT]))
(;W[fr];B[dr];W[fq];B[dq]C[RIGHT]))
(;B[dr];W[er];B[dq];W[dp]
(;B[aq];W[cr]
(;B[ar]C[RIGHT])
(;B[br];W[ds];B[fr];W[ar];B[as];W[bs]C[ko.]))
(;B[br];W[cr];B[aq];W[ds];B[fr];W[ar];B[as];W[bs]C[ko.]))
(;B[dq];W[dr]
(;B[dp];W[br];B[er];W[es];B[fr])
(;B[er];W[fr]))
(;B[aq];W[ar]
(;B[er];W[dr];B[fr];W[bs])
(;B[bs];W[dr];B[fr];W[cs];B[br];W[er])
(;B[br];W[cr]))
(;B[fr];W[er]
(;B[es];W[ds];B[dr];W[fs];B[dq];W[dp];B[aq];W[ar];B[br];W[cr];B[as];W[bs]C[ko.])
(;B[br];W[ar];B[cr];W[dr];B[bs];W[dp];B[ds];W[es]LB[co:A];B[fq];W[cs])))