(;
AB[cr][fr][gr][cq][dq][eq][bp][cp][pp][co][pn]
AW[br][dr][er][hr][bq][fq][gq][iq][nq][bo][do][fo][bn][cn]
C[Black plays.

Source:
    Tesuji Dictionary, Vol. 1, Hasami-tsuke #4
    Segoe Kensaku & Go Seigen, Ishi Press]
(;
B[ar]
C[The only move!];
W[bs]
(;
B[ds]
C[Another good move!];
W[ap]
C[White appears to be able to connect here.];
B[aq];W[as];B[aq];W[ao];B[cs]
C[But after a couple throw-ins, Black has a snapback to form the 2nd eye.]
)
    (;
    B[cs]
    C[A mistake.];
    W[gs]
    C[And Black has a dead shape in the corner.]
    )
)
    (;
    B[bs]
    C[Fails];
    W[ar]
    C[And Black can make an eye by capturing either the 3-stone group on the left or the 2-stone group on the right, but not both!]
    )
)

