(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[0.00] AW[rb][qc][sc][qd][re][rf]AB[pb][qb][pc][pd][oe][qe][qf][qg][rg][sg]TR[sc]C[Black to kill, no ko.] (;B[rd]LB[ra:c][rc:a][sd:b][sf:c]C[Simple! Note that white needs 3 moves to live (a, b and c) without interference from black. RIGHT]) (;B[ra] ;W[rd] (;B[sb] ;W[sa]) (;B[sf] ;W[se] (;B[sb] ;W[sa]) (;B[qa] ;W[sb])) (;B[se] ;W[sf] (;B[sb] ;W[sa]) (;B[qa] ;W[sb])) (;B[qa] ;W[sb] (;B[sf] ;W[se]) (;B[se] ;W[sf]))) (;B[se] ;W[rd] (;B[sf]TR[ra][sd]C[RIGHT]) (;B[ra] ;W[sf]C[Only ko.])) (;B[sf] ;W[rd] (;B[ra] ;W[se]C[Only ko.]) (;B[se]TR[ra][sd]C[RIGHT]) (;B[sa] ;W[ra] (;B[sd] ;W[se]) (;B[se] ;W[sd]))) (;B[sd] ;W[rd] (;B[sf] ;W[se] ;B[ra] ;W[sb]) (;B[se] ;W[sf] ;B[ra] ;W[sb]) (;B[ra] ;W[sb] (;B[sf] ;W[se]) (;B[se] ;W[sf]))) (;B[sb] ;W[rd] (;B[ra] ;W[sa]C[Only ko.]) (;B[sf] ;W[sa]) (;B[se] ;W[sa]) (;B[sd] ;W[sa])) (;B[sa] ;W[rd] (;B[ra] ;W[sf]TR[qa][sb]) (;B[sf] ;W[ra] (;B[sd] ;W[se]) (;B[se] ;W[sd]))))