(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[19]KM[0.00] PW[White]PB[Black]AW[dn][do][cp][gp][cq][fq][br]AB[eo][dp][fp][dq][jq][cr][dr]LB[dn:3][en:C][do:9][eo:4][go:A][cp:7][fp:10][gp:13][cq:5][dq:6][fq:1][gq:B][jq:2][br:11][cr:8][dr:12]C[White 13 (G4) is hamete. How should Black respond?] (;B[go]CR[go] ;W[ip]CR[ip] (;B[hp]CR[hp] ;W[iq]CR[iq] ;B[gq]CR[gq] ;W[kq]CR[kq]C[White sacrified two stones to gain a strong position on the right keeping the Black group confined. In addition an original Black pinching stone at K3 has been rendered useless. Black's Initial move at G5 wasn't a forcing move allowing White to play J4 that threatened the single black stone on the right.]) (;B[gq]CR[gq] ;W[gr]CR[gr] ;B[hq]CR[hq] ;W[iq]CR[iq] ;B[hr]CR[hr] ;W[ir]CR[ir]C[After this exchange, the Black stones are confined, White has become stronger on the right and Black's K3 stone has been rendered useless.])) (;B[gq]CR[gq] ;W[hq]CR[hq] ;B[gr]CR[gr] ;W[hr]CR[hr] ;B[go]CR[go] ;W[hp]CR[hp] ;B[fr]CR[fr] ;W[ho]CR[ho] ;B[gn]CR[gn] ;W[lq]CR[lq]C[Black is over-concentrated, while White has solid groups on both sides.]) (;B[en]CR[en] ;W[dm]CR[dm] ;B[em]CR[em] ;W[dl]CR[dl] ;B[el]CR[el] (;W[hq]CR[hq]C[CHOICE White tries to protect his investment] ;B[dk]CR[dk] ;W[ck]CR[ck] ;B[cj]CR[cj] (;W[bl]CR[bl]C[CHOICE] ;B[bk]CR[bk] ;W[cl]CR[cl] ;B[dj]CR[dj]C[RIGHT The result is a very strong outside position for Black]) (;W[bj]CR[bj] ;B[cl]CR[cl] ;W[bk]CR[bk] ;B[co]CR[co]C[RIGHT White loses the edge.])) (;W[dk]CR[dk] ;B[hq]CR[hq] ;W[gq]CR[gq] ;B[ho]CR[ho] ;W[go]CR[go] ;B[gn]CR[gn]C[RIGHT After this sequence Black has gained territory on the side and has developed influence on the outside.])))