(;FF[4]GM[1]SZ[19]AP[Jago:Version 4.25]GN[3464]GE[사활]DI[4d]DP[7]SO[redpython]CO[8]AB[bb][db][eb][fb][ec][cd][dd][be][bf][cf][cg]AW[gb][ib][bc][gc][bd][ed][ce][de][ee][df][dg][ch][dh]C[양자충의 맥으로 흑을 잡는다.];W[cb];B[ca];W[cc];B[dc];W[ab];B[ba];W[da];B[ea];W[ac];B[ae]C[notice black could play ko at a14, but for the problem he doesn't.];W[bg];B[bh];W[ag];B[ah];W[bi];B[af];W[ag];B[bg];W[ai])