(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[Pierre-Olivier Tremblay]PB[Sakai Hideyuki]WR[6d]BR[9p]EV[World Mind Sports Games Men's Individual]US[Pierre-Oliver Tremblay]RE[B+Resign]
;B[qd]
;W[pp]
;B[dd]
;W[dp]
;B[qn]
;W[nq]
;B[pj]
;W[nc]
;B[od]
;W[pb]LB[lc:B][qc:A]
;B[lc]LB[qc:A][nd:B]C[White can choose A or B]
(;W[nd]
;B[qc]
;W[ld]LB[kd:B][le:A]
(;B[kd]
;W[le]
;B[jc]LB[ke:A][ne:E][nf:C][of:B][pg:D]C[Sakai suggested the variation starting from A, making the white group thicker so white can invade around D after.  Anyway if white chooses to defend here they should play C, not B as in the game.  The move at B leaves a serious defect at E for later.]
(;W[of]
;B[oc]
;W[ob]
;B[mb]
;W[nb]
;B[qg]
;W[cf]
;B[fd]
;W[dj]
;B[fq]
;W[hq]
;B[cq]
;W[cp]
;B[dq]
;W[ep]
;B[bq]
;W[fp]
;B[fr]LB[pk:B][ql:A]C[Sakai suggested B may be better here than the move white chose (A).]
(;W[ql]
;B[pl]
;W[pk]
;B[ok]
;W[qk]LB[qj:A][pm:B]
(;B[pm]LB[pk:A]C[Black has loosely connected on top, which would not have been possible if white started with A.]
;W[qj]
;B[pi]
;W[rh]
;B[rg]
;W[qh]
;B[ph]
;W[rm]
;B[qi]
;W[ri]
;B[sh]
;W[rn]
;B[rj]
;W[rk]
;B[si]
;W[nk]
;B[nl]
;W[oj]
;B[ol]
;W[qp]
;B[mk]
;W[cc]
;B[cd]
;W[bd]
;B[dc]
;W[bb]
;B[cb]
;W[bc]C[Now black is very thick around q10 so they can take advantage of the defect left at o15]
;B[ne]
;W[oe]
;B[mf]
;W[ke]
;B[lg]
;W[id]
;B[ic]LB[qb:B][if:A]C[White should maintain their position in the center with A, it is too early to crawl into the corner with B as in the game]
(;W[qb]
;B[jg]
;W[kh]
;B[kg]
;W[hc]
;B[hd]
;W[ie]
;B[he]
;W[if]
;B[gg]
;W[eg]
;B[cl]
;W[cn]
;B[el]
;W[fk]
;B[fl]
;W[gk]
;B[gl]
;W[hk]
;B[hl]
;W[il]
;B[im]
;W[jm]
;B[hn]LB[gp:A]C[Pierre resigned here, withe weakness at A the e8 group cannot be seriously attacked and white doesn't have enough points.])
(;W[if]))
(;B[qj]))
(;W[pk]C[Sakia suggested white should start here instead, precluding the game variation where black plays on top.]
;B[qk]
;W[ql]
;B[pl]
;W[ok]
;B[ol]))
(;W[ke]
;B[je]
;W[jf]
;B[ie]
;W[lb]))
(;B[le]))
(;W[qc]))
