(;AW[nb]AW[nc]AW[oa]AW[nd]AW[oc]AW[pc]AW[qd]AW[qe]AW[pe]AB[pd]AB[od]AB[oe]AB[ne]AB[md]AB[mc]AB[mb]AB[ma]AB[na]AB[qc]LB[qc:1]C[Black cut at 1. How shoud white respond?]AB[pf]AB[pg]AW[qg]AW[qf]AB[mf]AP[goproblems] (;W[pb];B[qb] (;W[rb] (;B[rc]C[CHOICE];W[qa]C[Black should have played at Q19 in stead of R17.RIGHT]) (;B[qa]C[CHOICE];W[rc]C[Black should have played at Q19 in stead of R17.RIGHT])) (;W[qa];B[ra]) (;W[rc];B[rb] (;W[rd];B[pa];W[qa];B[ra]) (;W[sd];B[pa];W[qa];B[ra]))) (;W[qb];B[pa] (;W[ob];B[pb]) (;W[pb];B[ob]C[White can do better.]) (;W[qa];B[ob])) (;W[rc];B[qb];W[pb];B[rb] (;W[rd];B[pa];W[qa];B[ra]) (;W[sd];B[pa];W[qa];B[ra])))