(;
AB[cr][dr][mr][cq][hq][mq][pq][dp][gp][jp][np][pp][do][ho][io][mo][no][jn][ln][pn][cm][dm][hm][jm][km]
AW[er][lr][dq][eq][iq][lq][nq][oq][ep][hp][ip][lp][mp][fo][go][jo][ko][lo][kn][em][fm][dl][ek]
C[Black plays.

Source:
    Tesuji Dictionary, Vol. 1, Hasami-tsuke 36]
(;
B[kr]
C[An amazing move, and the only move that works!  Black's stone sets up a double threat against both the 3 stone group to the left and the 8 stone group.]
(;
W[ms]
C[If White defends on the right, ...];
B[ir]
C[... then Black has a series of forcing moves on the left.];
W[jq];B[kq];W[kp];B[jr]
C[And Black captures 4 White stones.  If White connects to save the 4 stones, then Black catches all the White stones in a shortage of liberties.]
)
    (;
    W[hr]
    C[White has no time to defend on the left.];
    B[ls];W[jq];B[kq]
    C[Black captures the 8 White stones in a snapback.]
    )
)
    (;
    B[ir]
    C[Bad timing.];
    W[jq];B[kr]
    C[Now this move no longer works.];
    W[kq]
    C[White can dodge to here.  Now all of White's stones are safe.]
    )
)

