(;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.]
)))