(;GM[1] FF[4] AP[Hibiscus:2.1] SZ[19] ST[3] ;AB[np][pq][qp] AW[po][qq] PL[W] C[Black played the inside hane instead of following the joseki with A, how to respond?] LB[yy:1]RG[qp]LB[yy:1][qr:A];W[pp] MN[1] ;B[qo] (;W[oq] ;B[pr] (;W[rq] ;B[pn] ;W[on] ;B[pm] (;W[nr] C[RIGHT This is an important tesuji!] )(;W[or] C[See the next problem, for details...] )(;W[nq] LB[nq:9][mq:A]C[Black has an irritating move at A.] ))(;W[or] ;B[qr] ;W[rq] ;B[rr] ;W[qn] ;B[rp] ;W[ro] ;B[sq] (;W[op] ;B[pn] C[This is not totally unplayable, but white has a better way.] )(;W[pn] ;B[op] ;W[mq] C[This is not totally unplayable, but white has a better way.] ))(;W[op] ;B[or] ;W[nq] ;B[rq] C[Clearly white has been tricked.] )(;W[pn] ;B[or] (;W[qn] ;B[rq] C[Good for black] )(;W[rq] ;B[qn] ;W[qm] ;B[rm] ;W[rl] ;B[rn] LB[rn:12][ql:A];W[ql] ;B[rp] C[Good for black.] ))(;W[qn] ;B[rq] (;W[or] ;B[qr] ;W[op] ;B[pn] C[Not unplayable but white has better.] )(;W[rp] ;B[ro] ;W[rn] ;B[qr] (;W[pn] ;B[nq] C[Good for black.] )(;W[op] ;B[pn] C[White is in trouble.] ))))(;W[qn] ;B[rq] ;W[qr] (;B[rr] ;W[rp] ;B[ro] ;W[rn] ;B[sp] ;W[oq] ;B[pr] ;W[or] ;B[qs] ;W[op] ;B[pn] C[Not unplayable but white can do better.] )(;B[pr] C[Sometimes black can resist like this.] ;W[rr] ;B[rp] ;W[pn] ;B[rn] ;W[rm] ;B[so] ;W[oq] ;B[or] ;W[nq] ;B[nr] ;W[mq] ;B[mr] ;W[lq] C[Mostly better for white.] )))