(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[19]KM[1.00]TM[] AW[cb][eb][fb][ac][bd][ed][fd][be][ce][de]AB[ca][ab][db][bc][dc][cd][dd]C[White to move!]PL[W] (;W[ba]CR[ba] ;B[da]CR[da] ;W[bb]CR[bb]C[Black is dead! RIGHT]) (;W[bb]CR[bb] ;B[ba]LB[cc:B][ad:A]CR[ba]C[White can't play B because of the snapback, so this is only a ko! B A or B B instead of B B19 would allow white to play B19 himself and kill black as in the solution.]) (;W[ad]CR[ad] ;B[bb]CR[bb]C[The A 17 stone is not important!]) (;W[da]CR[da] ;B[ea]CR[ea] (;W[ba]CR[ba] ;B[bb]CR[bb]C[This is only a ko!]) (;W[bb]CR[bb] ;B[ba]CR[ba]C[Only ko!])))