Save the 3 stone-group and the single stone in the corner, from being captured.
(;
AW[bc][cc][dd][ce][de][ee][gf][eg]
AB[dc][gc][bd][cd][ed][fd][be][cg][di]
(;B[bb];W[db]
;B[ec];W[cb]
(;B[cf];W[ba]C[RIGHT]
)
(;B[bf];W[ba]C[You saved both groups, but black is able to play 1 line higher]C[RIGHT]
)
)
(;B[cf];W[ec]
;B[db];W[eb]
)
(;B[bf];W[ec]
;B[db];W[eb]
)
(;B[cb];W[bb]
;B[db];W[bf]
)
)