(;AB[cd]AB[dd]AB[dc]AB[db]AB[ed]AB[gd]AB[fd]AW[ce]AW[cf]AW[bf]AW[bg]AW[de]AB[ee]AB[df]AB[dg]AW[ef]AB[cg]AW[ff]AW[fg]AW[fh]AB[eg]AB[ei]AB[eh]AW[ch]AW[dh]AW[dj]AW[cj]AW[fi]AW[ek]AB[bh]AB[bi]C[Black to seal in corner.] (;B[bd]C[];W[ae] (;B[be];W[di];B[ad];W[ej];B[af];W[ag]C[can do better.]) (;B[ad];W[di];B[be];W[ej]C[can do better];B[af];W[ag]C[can do better.])) (;B[be];W[bd]) (;B[ag];W[ae];B[bd];W[di] (;B[be];W[ej]C[sente, but can do better.]) (;B[ad];W[ej]C[sente, but can do better.];B[be];W[af]C[can do better])) (;B[ae] (;W[bd]C[white is unreasonable here.];B[ag] (;W[be];B[bc] (;W[di];B[ad];W[ej];B[af];W[bj]C[white loses big.]) (;W[af];B[ad])) (;W[di];B[be];W[ej];B[af];W[ad];B[ah] (;W[bj];B[bc]) (;W[bc];B[bb]))) (;W[ag]C[CHOICE];B[be];W[di]C[correct, and white will have to put two stones in before Black have to play at B16RIGHT])) (;B[af];W[ae]) (;B[ad];W[ae];B[ag];W[di];B[bd];W[ej];B[be];W[af]C[can do better]))