(;SZ[13]AW[eb]AW[fb]AW[gb]AW[fc]AW[bd]AW[fd]AW[ce]AW[de]AB[ea]AB[ab]AB[db]AB[cc]AB[dc]AB[ec]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]TM[]PW[White]PB[Black] (;B[ba];W[bc] (;B[bb]LB[ba:1]LB[bb:3]LB[bc:2]C[Black 1 is the vital point. After White 2, Black 3 gets two eyes.RIGHT]) (;B[cb];W[bb]C[Black cannot make 2 eyes. The marked point is a false eye.]MA[aa]) (;B[da];W[bb]C[Black can't make any eyes at all.])) (;B[bc];W[ba]LB[bc:1]C[Black 1 fails to get two eyes, allowing White to occupy the vital point B13.];B[aa];W[bb];B[ac];W[fa]C[Black cannot make two eyes.]) (;B[bb];W[ca] (;B[ba];W[da] (;B[cb];W[da];B[ca];W[fa]LB[da:A]LB[ea:B]C[The eye at A is false, because B is in Atari.]) (;B[bc];W[fa]C[Black has only one eye.]) (;B[ed];W[ee]C[Black cannot escape.])) (;B[da];W[ba]TR[ba]TR[ca]C[White's marked stones make a 'killing shape' -- Black cannot make two eyes.]) (;B[cb];W[ba]TR[ba]TR[ca]C[White's marked stones make a 'killing shape' -- Black cannot make two eyes.])) (;B[ca];W[bb] (;B[bc];W[ba]C[Black cannot make two eyes.];B[aa];W[ac]) (;B[ba];W[bc])) (;B[da];W[bb];B[bc];W[ba]))