(;AP[goproblems]AW[bb]AW[bc]AB[ad]AB[bd]AB[ce]AB[bf]AW[cd]AW[dd]AW[dc]AB[cc]AB[cb]AB[db]AB[eb]AW[ca]AW[fa]AW[fb]AW[fc](;B[ba](;W[aa](;B[ac];W[da](;B[ab];W[ea];B[ba]C[RIGHT])(;B[ea];W[ec])(;B[ec];W[ed]))(;B[da];W[ec])(;B[ec];W[ed]))(;W[ea](;B[ab];W[aa];B[ac];W[da];B[ba]C[RIGHT])(;B[da];W[ec])(;B[ac]C[RIGHT])(;B[ec];W[ed])))(;B[ab];W[ba];B[ac];W[da])(;B[ac];W[ba]C[Black cannot prevent White from connecting due to lack of liberties.])(;B[da];W[ba](;B[ac];W[ec])(;B[ec];W[ed])(;B[ab];W[ec]))(;B[ec];W[ed]))