(;
GM[1]
SZ[19]
AW[dg][ek][cn][dn][ho][hp][hr][mp]
AB[jp][jd][pj][dj][dp][pd][pp][dd][gc][co][fp][go][gn][jn][qm]
TR[hr]
C[Problem 22. Black to play.  

White jumps down to the second line with the marked stone. How should Black respond ? ]
(;B[jr]
TE[2]
C[Correct Answer.  

This is another example of driving White into the corner by jumping down to 1. This keeps White's forces at the bottom separated. ]
;W[eq]
C[White can live with 2 ... ]
;B[ep];W[fq]
C[... and 4, but the territory she gets is small, ... ]
;B[dq]
LB[jr:1][kq:C][hq:B][gq:A]
C[... while Black's territory in the corner is bigger and more secure. Before playing 1, Black might consider exchanging A for White B, but then might jump to C instead of connecting at B. <= ]
)
(;B[fr]
LB[kq:A]
C[How the game continued.  

Black defended the corner with 1, so White could link up her stones by jumping to A. ]
;W[ko]
C[But she first peeped with 2. ]
(;B[hn]
C[Black strengthened the center with 3, so ... ]
;W[jo]
C[... White took profit with 4. See Problem 26 for the continuation. <= ]
)
(;B[jo]
C[If Black had connected with 3, ... ]
;W[kq]
C[... White would have fallen back to 4, satisfied with making Black's stones heavy. <= ]
)
(;B[kp]
LB[ko:2]
C[Variation.  

In answer to White 2, Black could have crawled to 3. ]
;W[jo]
C[If White pushes in with 4, ... ]
;B[lo];W[lp];B[io];W[kn];B[ip]
C[... the sequence to Black 9 is inevitable. ]
;W[in]
C[If White ataris with 10, ... ]
;B[hn]
C[... Black cuts with 11 and ... ]
;W[jm];B[hq]
C[... secures the bottom left with 13. <= ]
))
)