(;B[pd]GM[1]FF[4]SZ[19]AP[SmartGo:2.8.3.0]
GN[2012.05.16_WAGC_Rd7_DPRK-CHINA]
PW[Kwang Hyok Ri (NORTH KOREA) ]
PB[Qiao Zhijian (CHINA)]
EV[2012 WAGC]RO[7]
DT[2012-05-16]
KM[6.5]
RE[W+T]
US[Chris Garlock]
AN[So Yokoku 8P (trans Ting Ting Chen)];W[dd];B[pq];W[dp];B[cf];W[fc];B[bd]
;W[qo];B[qk];W[op];B[oq];W[np];B[nq];W[mp];B[lq]
(;W[qq]
C[this is a new move; I've never seen this before; joseki is at A. ];B[pp]
;W[po];B[qp];W[mq];B[mr];W[rp];B[rq];W[nr];B[lr];W[qr];B[ro];W[sp];B[so]
;W[or];B[sq];W[rp];B[sp];W[pr];B[rp];W[rm]
C[severe move; good];B[rl];W[rr];B[sm];W[sr];B[sn];W[iq];B[lp];W[nn]
C[white has gotten an  advantage from this new move; must have been studying this]
;B[ln];W[qm];B[om];W[pl]
C[severe fighting from B47];B[nm];W[pk];B[qj];W[pj];B[qi];W[mm];B[mn];W[on]
;B[nk];W[lm];B[km];W[lk];B[ll];W[ml];B[mk];W[kl];B[nl];W[ll];B[ni];W[pi]
;B[ph];W[qh];B[qg];W[rh];B[rg];W[nh]
C[this is a hard fight for both players; they must calculate very precisely, as even a tiny mistake will lead to total loss]
;B[mi];W[ql];B[rj];W[sk];B[sl];W[si];B[sj];W[pg];B[oh];W[pf];B[qf];W[qe]
;B[sg];W[pe];B[ng];W[pm]TR[qh:rh][si]
C[white sacrifices the marked stones to take the upper right corner];B[jm]
;W[fq];B[nd];W[pc];B[oc];W[qd];B[pb];W[od];B[oe];W[ne]
C[very big ko; life and death];B[pd];W[sf];B[re];W[od];B[rd];W[nc];B[pd]
;W[rn];B[rk];W[od];B[lo];W[no];B[pd];W[og];B[mh];W[od]
C[black has no more ko threats; could play at A but not good enough]
(;B[ob];W[md];B[qc];W[pd];B[jl]
C[it's not necessary for the marked w grp to escape, as white is now winning.]
TR[lk:lm][kl][ml:mm];W[cc];B[ci];W[co];B[cq];W[bo];B[ef];W[ff];B[fg];W[gf]
;B[ke];W[qb];B[rc];W[nb];B[rb];W[jd];B[kd];W[kc];B[jc];W[ic];B[je];W[jb]
;B[id];W[jc];B[gg];W[hf];B[fr];W[er];B[gq];W[gr];B[fp];W[fs];B[eq];W[fr]
;B[hg];W[if];B[ig];W[ck];B[jf]
C[black has surrounded the center but white still is ahead];W[ek];B[bk];W[bl]
;B[fk];W[fl];B[gl]
(;W[fm];B[gm];W[gn];B[gk];W[ej];B[ns];W[os];B[fn];W[go];B[en];W[dm];B[rs]
;W[qs];B[hp]
C[b loses on time but he's behind by 10 points after komi (the b stones on the left are captures with A. 

]
LB[gp:A])
(;W[in]))
(;B[gq]))
(;W[qi]))

