(;SZ[13]AW[ba]AW[bb]AW[eb]AW[fc]AW[cd]AW[ed]AW[fd]AW[ce]AB[ab]AB[bc]AB[cc]AB[dc]AB[ec]C[Black to play to live.]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]TM[]PW[White]PB[Black]
(;B[da];W[bd];B[fb];W[gb];B[fa]LB[da:1]C[ Black 1 is the key move.RIGHT])
(;B[db];W[fb]
(;B[da];W[bd]C[Black is dead.])
(;B[bd];W[be]
(;B[da];W[ad])
(;B[ad];W[da];B[ca];W[cb]))
(;B[ca];W[bd]
(;B[dd];W[de]C[ Black cannot make two eyes.])
(;B[cb];W[dd];B[aa];W[ad]C[ Black cannot make two eyes.])))
(;B[fb]
(;W[gb];B[da]
(;W[bd];B[fa])
(;W[fa];B[bd];W[be];B[ad]))
(;W[db];B[cb];W[gb]
(;B[da]
(;W[fa]C[CHOICE];B[bd];W[ea];B[ca];W[be];B[ad]C[ Black lives.RIGHT])
(;W[bd]C[CHOICE];B[ea]C[RIGHT]))
(;B[bd];W[be]
(;B[ad];W[ca]
(;B[fa];W[ga]
(;B[ea];W[da])
(;B[da];W[ea]))
(;B[da];W[ea])
(;B[ea];W[fa]))
(;B[ca];W[ad];B[fa]
(;W[da];B[ea])
(;W[ea];B[da];W[ae];B[ac])
(;W[ga];B[aa];W[ea])))))
(;B[cb];W[ca])
(;B[ca];W[da])
(;B[bd];W[be];B[ad];W[db];B[cb];W[ca];B[da];W[ea];B[fb];W[gb]))