(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[9]KM[7.50] PW[Pio]PB[Pio]WR[9k]BR[9k]DT[2015-02-22]AW[ae][be][ce][cf][df][dg][eg][eh][ei]AB[af][bf][bg][cg][ch][dh][di]PL[W]VW[] ;W[bh]WL[58]BL[57] ;B[bi]WL[58]BL[55] ;W[ah]WL[57]BL[55]C[This is seki] ;B[ai]WL[57]BL[52]C[This move is legal. It looses the group under PSK only, not under SSK.] ;W[ci]WL[60]BL[52] ;B[bi]WL[60]BL[60]C[This move is illegal with PSK, but legal with SSK, since it is now White to play.] ;W[] ;B[ai]C[This move is illegal with any superko rule. But it is legal in japanese rule. ] ;W[ci] ;B[bi]C[However, with japanese rule, Black looses one point every time she cycles, because two black sones are captured, and only one white. ] ;W[])