(;
GM[1]
SZ[19]
AW[dc][ec][cd][cf][cg][qc][oc][re][qp][pq][np][rn][qn][pn][on][om][mn][mm][ml][nl][lk][lj][kl][pl]
AB[dg][df][dh][ed][fc][gd][mc][ne][pe][ep][jp][po][qo][nm][ll][lm][km][mk][nk][ok][ol][pk][qk][pm][qm][rm]
C[Problem 83. White to play.  

That is the position reached in the game of Problem 73. How should White attack the three black stones ? ]
(;W[jm]
TE[2]
C[Correct Answer.  

White should play a two-step hane with 1. ]
;B[jl];W[kk];B[jn];W[im];B[ko]
C[After the sequence to Black 7, ... ]
;W[ik]
C[... White secures her stones in the center with 7. These stones aim at the bottom and the top. White is now ahead, so she doesn't have to do anything drastic. <= ]
)
(;W[jj]
C[Failure.  

White 1 is a slack move. ]
;B[jl]
C[Black gets a good position at the bottom with 2. ]
;W[kh]
C[White jumps to 3, ... ]
;B[kf]
C[... but Black answers with 4, mapping out territory at the top. White is under attack. ]
;W[nh]
C[She expands to the right, but ... ]
;B[ph]
C[... Black defends and takes more territory there. White's stones are still vulnerable, so Black can look forward to an interesting game. <= ]
)
)