(;AW[rb]AW[qb]AW[pb]AW[ob]AW[nc]AW[mc]AW[od]AW[pd]AW[qe]AB[oc]AB[pc]AB[qc]AB[rc]AB[nd]AB[ne]AB[of]AB[qf]AB[qg]C[Capturing race. Black to play and win. The winning move is a common tesuji.]AP[goproblems]
(;B[sd]
(;W[qd];B[sf]C[RIGHT])
(;W[re];B[rf];W[se];B[pe]C[RIGHT]))
(;B[re];W[rd];B[sd];W[qd])
(;B[sf];W[re]
(;B[se];W[sd];B[rd];W[qd];B[sc];W[sb];B[sd];W[rf])
(;B[rf];W[sd])
(;B[pe];W[rd]))
(;B[se];W[re]
(;B[sf];W[sd];B[rd];W[qd];B[sc];W[sb];B[sd];W[rf])
(;B[sd];W[rf]
(;B[rg];W[sf])
(;B[sf];W[rg]))
(;B[rf];W[sd])
(;B[rd];W[sf])))