(;GM[1]FF[3]SZ[19]
AW[oa][mb][nb][oc][qc][nd][qd][rd]AB[na][ob][pb][qb][rb][rc][sc]PL[W]C[White to play and kill.]
(;W[sa])
(;W[pa]TR[pa]
(;B[sa])
(;B[qa]))
(;W[ra]TR[ra];B[sa];W[sb];B[qa]))