(;AB[dd][jd][pd][pj][jj][dj][dp][jp][pp][oo][pn][pm][ql][rl][qj][nn][nm][mm][dn]AW[fq][np][no][mn][om][on][ol][pl][qm][qk][rk]C[Black plays.

Source:
    How to Play Handicap Go, Part 3
    James Kerwin 1P
    American Go Journal, Vol. 27, No. 3, p. 25]SZ[19]

(;B[mo]C[Black chooses what to keep and what to let go.  Black starts a sequence of forcing moves that aim to build center power.];W[ln];B[mp];W[nq];B[lm];W[kn];B[mq];W[mr];B[kp];W[km]
(;B[nl];W[rm];B[ok];W[pk];B[rj];W[sl];B[nj]C[Black closes off White's access to the top.];W[pr]C[Now White must save the bottom group, but Black has already decided to sacrifice the lower right corner to gain even more outside strength on the bottom.];B[qr];W[or];B[qq];W[rp]
;B[lr]C[With White scrambling to make life to capture the corner, Black begins closing off the bottom.];W[ls];B[kr];W[op];B[po];W[pq]C[This result is quite good for Black.

Although White has almost 40 points in the corner, Black's outside thickness is awesome, while strong groups surround White's 4 weak center stones.  And finally Black has sente.])
(;B[pk]C[This cut is also effective.];W[rm];B[nk];W[pr];B[qr];W[or];B[qq];W[rp];B[lr];W[ls];B[kr];W[op];B[po]
;W[pq];B[ok];W[sl];B[ql];W[rl];B[nl];W[ql]C[As with the main line, Black creates excellent outside thickness.]))
(;B[ln]C[Black could also play here, which would be a bit simpler.  Black still hasn't chosen what to give up for creating outside thickness.]))