(;GM[1]FF[4]SZ[19]AP[SmartGo:3.1.7]
RU[Simple]
AB[fb:fc][ec][ad:dd]
AW[ea:eb][bc:dc]
(;B[ca];W[ba];B[ab];W[ac]
(;B[db])
(;B[bb];W[db];B[cb]))
(;B[ab];W[ac];B[db];W[cb];B[ca];W[da];B[ba]))

