(;AW[aa]AW[ab]AB[ba]AB[bb]AW[ac]AW[bc]AB[cc]AB[cd]AB[dd]AB[ed]AB[fc]AB[fd]AB[fb]AB[fa]AW[bd]AW[ce]AW[be]AW[de]AW[ee]AW[fe]AW[gd]AW[gc]AW[gb]AW[ha]AW[hb]C[White to get the most out of this group.]AP[goproblems]
(;W[cb];B[db]
(;W[da];B[ea]
(;W[ca];B[ec]C[White reduces Black to just 2 points while gaining 4 (2 stones + 2 territory) herself. A total gain of 9 points in sente (reverse gote) compared to Black playing first and securing life with 7 points.RIGHT])
(;W[ec];B[ca]))
(;W[ca];B[da]C[Both White and Black have 4 points, White has sente. This is 2 points worse than the solution.])
(;W[ec];B[ca])
(;W[ea];B[ca]))
(;W[db];B[cb]
(;W[dc];B[da])
(;W[eb];B[ea]
(;W[da];B[dc]C[Sente seki, 2 points worse than the solution.])
(;W[dc];B[da]))
(;W[ec];B[da])
(;W[ea];B[eb])
(;W[da];B[eb];W[dc]C[Gote seki.]))
(;W[ca];B[cb])
(;W[da];B[cb]
(;W[db];B[eb];W[dc]C[Gote seki.])
(;W[eb];B[db]))
(;W[ea];B[db]
(;W[cb];B[ca])
(;W[da];B[eb])
(;W[ca];B[cb]))
(;W[eb];B[db]
(;W[da];B[ea])
(;W[ca];B[cb])
(;W[cb];B[ca];W[da];B[ea]))
(;W[dc];B[db])
(;W[ec];B[db])
(;W[ga]C[Black can either tenuki (White can get the same result as in the solution, but wastes one move) or defend and get 7 points of territory.]MA[db]))