Black to play the best endgame move. A theme gleaned from a game played on KGS.
(
;AB [ea][db][fb][hb][dc][hc][ed][id][ee][fe][ie][ef][cg][eg][fg][gg][dh][di]
AW [eb][ec][fc][fd][hd][ge][ff][gf][if][hg][eh][fh][gh][hh][ei] C[black to play the best endgame move.] SZ[9]
(;B[gd] ;W[gc]
(;B[gb]
(;W[gd] ;B[hf] C[RIGHT CHOICE Correct.])
(;W[he] C[CHOICE]
(;B[ic] ;W[hf] ;B[gd] C[RIGHT Correct.])
(;B[gd] ;W[ic] C[Black can do a bit better.])
)
)
(;B[he] ;W[gd]
(;B[ic] ;W[hf] C[Black can do better.])
(;B[gb] ;W[hf] C[Black can do better.])
)
(;B[hf] ;W[he]
(;B[gb] ;W[ic]
(;B[ib] ;W[gd] C[Black can do better.])
(;B[gd] ;W[ib] C[Black can do better.])
)
(;B[ic] ;W[hf] C[Black can do better.])
)
)
(;B[gc]
(;W[gd] ;B[hf] C[RIGHT CHOICE Correct.])
(;W[he] C[CHOICE]
(;B[gd] ;W[ic] C[Black can do better.])
(;B[ic] ;W[hf] ;B[gd] C[RIGHT Correct.])
)
(;W[hf]
(;B[gd] ;W[he] ;B[ic] C[RIGHT CHOICE Correct.])
(;B[ic] ;W[gd] C[Black can do better.])
)
)
(;B[gb] ;W[gd] C[Black can do better.])
(;B[he] ;W[gd]
(;B[gc] ;W[hf] C[Black can do better.])
(;B[ic] ;W[hf] C[Black can do better.])
)
(;B[hf] ;W[he]
(;B[ic] ;W[hf] C[Black can do better.])
(;B[gc] ;W[ic]
(;B[gd] ;W[ib] C[Black can do better.])
(;B[ib] ;W[gd] C[Black can do better.])
)
(;B[gd] ;W[ic]
(;B[gc] ;W[ib] C[Black can do better.])
(;B[ib] ;W[gc] C[Black can do better.])
)
)
(;B[ic] ;W[gd]
(;B[gc] ;W[hf] C[Black can do better.])
(;B[he] ;W[hf] C[Black can do better.])
(;B[hf] ;W[he] C[Black can do better.])
)
)