(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[4]KM[0.00] PW[Weiß]PB[Schwarz]AW[ba][da][ab][bc]AB[dc][bd][cd]C[Black to play - what's the best he can do?] (;B[cb]CR[cb] (;W[bb]CR[bb] (;B[ca]CR[ca] ;W[cc]CR[cc] ;B[db]CR[db]C[Seki, Black wins by one point (the prisoner) RIGHT]) (;B[cc]CR[cc] ;W[ca]CR[ca]C[Seki & Jigo....])) (;W[cc]CR[cc] (;B[ca]CR[ca] ;W[bb]CR[bb] ;B[db]CR[db]C[Seki, Black wins by one point (the prisoner) ]) (;B[bb]CR[bb] ;W[ac]CR[ac] ;B[db]CR[db]C[Black wins ]) (;B[db]CR[db] ;W[ca]CR[ca]C[This time, WHITE has an eye, and black has no one...])) (;W[ca]CR[ca] ;B[bb]CR[bb]C[Black wins (one eye beats no eye)])) (;B[cc]CR[cc] ;W[cb]CR[cb]C[Black missed the vital point]))