This problem came up during the endgame in a KGS game, when black was carelessly filling dame. Unfortunately, I still lost. :/
(;AW[cd]AW[dd]AW[de]AW[df]AW[ee]AW[fg]AW[ff]AW[gf]AW[hf]AW[cg]AW[ch]AW[ci]AW[cj]AW[dj]AW[dk]AW[dl]AW[ig]AW[jh]AW[ji]AW[ii]AW[ij]AW[hj]AW[ik]AW[jk]AW[kj]AW[kk]AB[ef]AB[eg]AB[dg]AB[di]AB[dh]AB[ej]AB[fj]AB[gj]AB[ek]AB[el]AB[em]AB[hk]AB[hl]AB[il]AB[jl]AB[kl]AB[fh]AB[gg]AB[hg]AB[hh]AB[hi]AB[ih]C[Black just played triangle. Show him his mistake!]TR[hg]AP[goproblems]
(;W[gh];B[gi])
(;W[gi]
(;B[gh]
(;W[ei];B[eh];W[fi]C[Good! Navigate to see black's wiser answer.RIGHT])
(;W[fi];B[ei])
(;W[eh];B[ei]))
(;B[fi];W[gh]C[This is black's wiser answer.RIGHT]))
(;W[eh];B[ei])
(;W[ei]
(;B[fi]C[];W[eh]C[This is black's wiser answer.RIGHT])
(;B[eh]C[CHOICE]
(;W[gi];B[gh];W[fi]C[Good! Navigate to see black's wiser answer.RIGHT])
(;W[fi];B[gi])
(;W[gh];B[gi])))
(;W[fi]
(;B[ei]
(;W[gh];B[gi]C[The point of symmetry isn't *always* the answer. :)])
(;W[gi];B[gh]C[The point of symmetry isn't *always* the answer. :)]))
(;B[gi]
(;W[ei];B[eh]C[The point of symmetry isn't *always* the answer. :)])
(;W[eh];B[ei]C[The point of symmetry isn't *always* the answer. :)]))))