(;AB[bc]AB[cb]AB[cd]AB[dd]AW[dc]AW[cc]AW[ed]AW[de]AW[fc]C[Black to settle his group in the best way.]AP[goproblems]
(;B[db];W[ec]
(;B[be]C[Black forced white into bad shape.RIGHT]TR[dc]TR[ec]TR[ed]TR[fc])
(;B[ce]C[W has bad shape.RIGHT]TR[dc]TR[ec]TR[ed]TR[fc])
(;B[bd]C[Slow, but Black is settled and solid. White has bad shape.RIGHT]TR[dc]TR[ec]TR[ed]TR[fc]))
(;B[eb];W[ec]C[Now White has no weakness, but Black still has 3.]LB[bd:1]LB[bb:2]LB[db:3])
(;B[bb];W[ce];B[bd];W[db]C[Too good for White.])
(;B[be];W[ce];B[bd];W[db]C[Bad for B])
(;B[ce];W[db]C[B can do better.]))