(;
AB[qr][rq][qq][pq][qp]
AW[pr][lr][oq][nq][mq][rp][pp][qo][oo][qn][qm][rl]
C[White plays.

Source:  Jimmy Cha 4p,
"American GO Journal", Fall 1989.
But appeared without a solution!]
(;
W[rs]
C[Correct]
(;
B[or]
(;
W[sr];
B[ro]
(;
W[ps];
B[os]
(;
W[qs]
C[And Black can only form one
eye at S4.];
B[sp];
W[sq]
)
    (;
    W[sp];
    B[so];
    W[qs]
    )
)
    (;
    W[so]
    C[Fails.];
    B[sp];
    W[sn];
    B[ps];
    W[sq];
    B[rp];
    W[ns];
    B[os];
    W[nr]
    )
    (;
    W[sq]
    C[Fails];
    B[sp];
    W[qs];
    B[ps]
    )
)
    (;
    W[ps]
    C[Also works, but not as pretty due to the
symmetry breaking.]
    (;
    B[os]
    (;
    W[sq]
    C[Fails.];
    B[sr];
    W[qs];
    B[sp]
    (;
    W[nr];
    B[ro]
    )
        (;
        W[ro];
        B[rr]
        )
    )
        (;
        W[sr];
        B[ro]
        )
    )
        (;
        B[qs];
        W[sq];
        B[os];
        W[sr];
        B[ro];
        W[sp]
        )
        (;
        B[ro];
        W[qs]
        )
        (;
        B[rr];
        W[sr];
        B[ro];
        W[qs];
        B[sp];
        W[nr]
        )
    )
    (;
    W[os]
    C[Fails.];
    B[ps];
    W[ns];
    B[ro];
    W[so];
    B[sp];
    W[sn];
    B[sr];
    W[qs];
    B[pr]
    C[Black lives.]
    )
)
    (;
    B[ro];
    W[qs];
    B[or];
    W[ps];
    B[sp];
    W[nr];
    B[rn];
    W[sn]
    )
)
    (;
    W[rr]
    C[Fails.
Not all symmetric problems have symmetric solutions!];
    B[rs];
    W[sr];
    B[ro];
    W[so];
    B[sp];
    W[sn];
    B[or];
    W[os];
    B[ps];
    W[ns]
    )
    (;
    W[os]
    C[Fails];
    B[ro];
    W[so];
    B[sp]
    (;
    W[sn];
    B[sr]
    )
        (;
        W[sr];
        B[sn]
        )
        (;
        W[rs];
        B[qs];
        W[sr];
        B[sn]
        )
    )
)
