This is probably a simple one for good players but I managed to turn a 9x9 game from a certain loss to victory by fooling black with this...
(;SZ[9]AB[ha]AB[gb]AB[gc]AB[fc]AB[hc]AB[gd]AB[he]AB[ie]AW[ga]AW[fa]AW[fb]AW[eb]AW[ec]AW[ed]AW[fd]AW[fe]AW[ge]AW[hf]AW[if]AW[gf]AW[ib]C[Black to play and save the corner]FF[4]GM[1]AP[Jago:Version 4.33]GN[prob1]
(;B[ic]C[RIGHT])
(;B[hb]C[]
(;W[ic]))
(;B[hd]C[];W[ic])
(;B[ia]C[];W[hb])
(;B[id]C[];W[ic]))