(;SZ[19]DT[2022-10-11]AW[bb][cc][dc][eb][ed][ee][de][ef][eg][eh][dh][ch][cg][bh]TR[ch]AB[bg][cf][df][dg][ce][cd][bc][ae]C[Black to play and save their stones (without any ko).](;B[ab](;W[bd](;B[ac](;W[bf](;B[be]C[RIGHT])(;B[ag];W[be])(;B[cb]C[This makes a living black group in the corner, but sacrifices most of the black stones (the C14 group).](;W[ba]C[Not an ideal move for white.](;B[be]C[Black recovers after white's mistake.])(;B[ca];W[be]C[Black's stones are dead.]))(;W[be];B[ba])))(;W[be];B[bf]C[RIGHT]))(;B[ad];W[ac]C[ko])(;B[be];W[ac]))(;W[ac];B[ad](;W[bd];B[be]C[RIGHT](;W[ag];B[cb])(;W[cb];B[ag]))(;W[ba];B[ag]C[RIGHT])(;W[ag];B[cb]C[RIGHT])))(;B[be];W[ac])(;B[ag];W[ac](;B[bd];W[bf])(;B[bf];W[bd]))(;B[bf];W[bd];B[ac];W[ab](;B[ad];W[ag])(;B[ag];W[ad]))(;B[af];W[ac];B[bd];W[cb])(;B[bd];W[bf](;B[ag];W[ac])(;B[ab];W[cb](;B[ag];W[ac])(;B[ac];W[ag])))(;B[ad];W[ag](;B[bf];W[bd];B[ac];W[ab])(;B[ab];W[cb]))(;B[ac];W[ag](;B[cb];W[db])(;B[bf];W[bd])(;B[bd];W[bf]))(;B[ba];W[ac];B[bd];W[cb];B[ag];W[bf])(;B[cb];W[ac];B[bd];W[ca]))