1
(;GM[1]FF[4]SZ[19]HA[0]KM[0]GN[Cho L&D (abc)]AB[ab][bb][db][eb][cc][cd]AW[fa][cb][fb][dc][ec][fc][ad][dd][be][ce]C[Elementary](;B[ca];W[ea];B[bd];W[ac];B[da]C[Correct.])(;B[da]WV[];W[bc];B[ca]C[Wrong.])(;B[bc]WV[];W[ea];B[ca];W[da]C[Wrong.]))
