(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]SZ[19]KM[0.00]PW[white]PB[black](;B[qc];W[pd];B[qd];W[pe];B[ob];W[nc];B[oc](;W[nd];B[od];W[oe];B[ne];W[ld];B[me]C[very easy fight for black])(;W[me]C[better move for white];B[qf];W[];B[cq];W[dp];B[cp];W[do];B[er];W[gp];B[bn];W[dl]LB[lg:B][gl:A]C[A situation (joseki) is better for white because he almost enclosed black])(;W[ne];B[rf]))(;B[pd];AB[mc];W[qc];B[qd];W[pc];B[oc];W[ob];B[nb];W[od];B[nc];W[rd];B[re](;W[rc];B[qf](;W[pb]LB[ne:B][oe:A][nf:C]C[black has three ways to enclose white stone. Let's compare this moves](;B[oe]TR[me]C[white only have this move to trouble black. It's the better answer for black])(;B[ne]TR[of][og]C[two sente moves for white with this black move])(;B[nf]TR[me][pf][pg][oh];W[oh];B[]C[black tenuki];W[pe];B[qe];W[of]))(;AW[qj]C[with a stone here, it's better for white not to connect now];W[oe];B[pf];W[pb];B[nf];W[md](;B[me];W[nd];B[ld];W[le];B[kd];W[mf])(;B[nd];W[ne];B[me];W[mf];B[ld];W[le]C[white would probably play the ko (painful for black to connect)])))(;W[rb]C[If white has lot of ko treats, he can play here];B[qf]C[hard for black to kiil white])))