(;GM[1]FF[3]SZ[19]
AW[ob][oc][pc][pe][qe][qg]AB[pb][qc][qd][rd]PL[W]C[White to play and kill.]
(;W[qb]TR[qb];B[rb];W[pa];B[ra])
(;W[rb];B[qb];W[re]
(;B[sb];W[ra];B[sd];W[pa];B[qa];W[rc])
(;B[ra];W[sb];B[pa];W[sd]))
(;W[pa];B[rb];W[ra]))