Compare and contrast to problem number 16560. It's these small, but important differences which in turn create completely different problems which make Go great :-)
(;AB[pc]AB[qd]AB[oc]AB[nd]AB[ne]AB[me]AB[le]AB[lc]AB[kd]AB[jd]AB[jc]AW[mc]AW[nc]AW[md]AW[od]AW[oe]AW[of]AW[ng]AW[lg]AW[je]AW[jb]AW[kb]AW[kc]C[Black to get the best out of this]AW[ib]AW[ie]AP[goproblems]
(;B[lb]
(;W[mb]
(;B[ma]
(;W[ka]
(;B[la];W[ob];B[ld];W[nb];B[pb]C[NiceCHOICERIGHT])
(;B[ld];W[la];B[nb]C[RIGHT])
(;B[nb];W[la];B[ld]C[RIGHT]))
(;W[na];B[la];W[ka];B[ld];W[ob];B[nb]C[RIGHT]))
(;B[la];W[ma];B[ld]C[Nice.RIGHT])
(;B[ld];W[la];B[nb];W[ma]
(;B[na];W[ka]C[Black achieves nothing - in gote]TR[ob])
(;B[ka];W[ja];B[na];W[ka]C[Black achieves nothing - in gote]TR[ob]))
(;B[nb];W[la]
(;B[ld];W[ma]
(;B[na];W[ka]C[Black achieves nothing - in gote]TR[ob])
(;B[ka];W[ja];B[na];W[ka]C[Black achieves nothing - in gote]TR[ob]))
(;B[na];W[ld]C[Black can do better])
(;B[ka];W[ja];B[ld];W[ma])
(;B[ma];W[na];B[ld];W[ma];B[ka];W[ob]C[Black achieves nothing - in gote])))
(;W[ld]
(;B[nb]
(;W[ke];B[mb]C[NiceRIGHT])
(;W[mb];B[ma]C[NiceRIGHT]))
(;B[ke];W[mb]C[Black can do better])
(;B[mb];W[nb];B[ob]C[NiceRIGHT])
(;B[ma];W[na];B[nb]C[RIGHT])
(;B[na]
(;W[mb];B[la]C[RIGHT])
(;W[ma];B[mb]C[RIGHT]))
(;B[la];W[nb]
(;B[mb];W[ka])
(;B[ob];W[ma])
(;B[ma];W[na])
(;B[na];W[ka]
(;B[ma];W[oa])
(;B[oa];W[ma];B[mb];W[ma])))))
(;B[nb];W[mb]
(;B[lb];W[la]
(;B[ld];W[ma]
(;B[na];W[ka]C[Black achieves nothing - in gote]TR[ob])
(;B[ka];W[ja];B[na];W[ka]C[Black achieves nothing - in gote]TR[ob]))
(;B[na];W[ld]C[Black can do better])
(;B[ka];W[ja];B[ld];W[ma];B[na];W[ka]C[Black achieves nothing - in gote]TR[ob])
(;B[ma];W[na];B[ld];W[ma];B[ka];W[ob]C[Black achieves nothing - in gote]))
(;B[ld];W[lb]C[Black can do better])
(;B[ob];W[ld];B[lb];W[la]C[Black can do better])
(;B[ma];W[lb];B[ld];W[ob]C[Black can do better]))
(;B[ld];W[lb]
(;B[mb];W[nb]C[Black can do better])
(;B[nb];W[mb]C[Black can do better]))
(;B[mb]
(;W[nb]C[CHOICE]
(;B[lb];W[la]
(;B[ld];W[ma]C[Oops])
(;B[ma];W[ld];B[ka];W[na]C[Oops])
(;B[na];W[oa];B[ld];W[ma];B[ob];W[na])
(;B[ob];W[ma];B[ld];W[na];B[oa];W[ka])
(;B[oa];W[ma]
(;B[na];W[ld])
(;B[ld];W[na])))
(;B[na];W[lb]C[Oops])
(;B[ld];W[lb]C[Oops])
(;B[ma];W[ld]))
(;W[lb];B[ld];W[nb]C[Black can do better]))
(;B[ke];W[ld];B[lb];W[mb]C[Black can do better])
(;B[la];W[lb];B[mb];W[ld];B[nb];W[lc]C[Black can do better]TR[ke]TR[ka]TR[ob]))