(;AB[bc]AB[bb]AB[ba]AB[cd]AB[da]AB[ea]AB[eb]AB[ec]AB[ed]AW[ab]AW[ac]AW[bd]AW[ae]AW[ce]AW[de]AW[ee]AW[fd]AW[fc]AW[fb]AW[gb]AW[cc]C[Black to play.]AP[goproblems]
(;B[cb]
(;W[dd];B[dc]C[Black lives.RIGHT])
(;W[dc];B[dd]C[RIGHT]))
(;B[dc];W[cb]C[One eye. At most.])
(;B[dd];W[cb]C[One eye.])
(;B[db]C[One eye in gote.])
(;B[be];W[dd])
(;B[aa];W[cb]
(;B[ad];W[ac]C[One eye])
(;B[ca]C[One eye in double gote. White retakes at A17, if necessary.]TR[ac])
(;B[dd]C[One eye in gote. White retakes at A17, if necessary.]TR[ac])))