(;
GM[1]
SZ[19]
AW[dd][dp][dn][hp][iq][hq][jq][lq][qi]
AB[fq][fo][go][ho][ip][jp][kp][mo][pp][pd]
LB[cj:A]
C[Supplement to Problem 25: White's best move.  

Instead extending to A in the Problem Diagram, ... ]
;W[nq]
LB[mq:A]

TE[2]
C[... White should have jumped to 1. Her stones are now secure. Many joseki books give only the extension to White A as the next move, but 1 here is preferred because it aims at the outside. <= ]
)
)