(;GM[1]FF[4]SZ[19]AP[SmartGo:1.5]CA[UTF-8]ST[2]
PW[baoyun]
PB[Petteri Hiisilä]
HA[5]
KM[0.5]
RU[Chinese]
C[Teaching game with Bao Yun and some other teachers.]
;B[pd]CR[pd];B[pp]CR[pp];B[dp]CR[dp];B[dd]CR[dd];B[jj]CR[jj];
AE[jj];W[nc]CR[nc];B[pf]CR[pf];W[gd]CR[gd];B[jd]CR[jd];W[cf]CR[cf];B[ee]
CR[ee];W[cc]CR[cc];B[dc]CR[dc];W[cd]CR[cd];B[dg]CR[dg];W[de]CR[de];B[df]
CR[df];W[ce]CR[ce];B[ed]CR[ed];W[cg]CR[cg];B[dh]CR[dh];W[ff]CR[ff];B[ef]
CR[ef];W[fg]CR[fg];B[ch]CR[ch];W[dm]CR[dm]
(;B[ck]CR[ck]
C[This is better than line above, because of a 1) good follow-up, 2) a base. And white still cannot connect with one move.]
;W[cp]CR[cp];B[cq]CR[cq];W[dq]CR[dq]
(;B[cr]CR[cr]
C[Easy capture from either side.]
(;W[dk]CR[dk];B[dj]CR[dj];W[ej]CR[ej];B[ek]CR[ek];W[dl]CR[dl];B[cj]CR[cj]
;W[ep]CR[ep];B[do]CR[do];W[eo]CR[eo];B[co]CR[co];W[fj]CR[fj];B[fl]CR[fl]
;W[dn]CR[dn]
(;B[fn]CR[fn];W[en]CR[en];B[hl]CR[hl]
C[White has to think which side to play first.];W[hn]CR[hn];B[gn]CR[gn]
C[White cut will result in a wall. Therefor he will not cut.]
(;W[ho]CR[ho]
C[White has two weak groups. Black is not strong yet.

Black should strengthen himself with a move. White will strengthen her ONE group, but the other will remain week. Therefore black can attack.

--> It's good to spend a move to strengthen a group, if it results in a good attack with the next move pair.

Black's move?]
;B[jl]CR[jl]
C[Here. Now black is quite strong, and can attack either white group.];W[ll]
CR[ll];B[ij]CR[ij]
(;W[lc]CR[lc];B[he]CR[he]
C[Threatening to split & getting closer to black stones.];W[ge]CR[ge];B[ig]
CR[ig];W[ii]CR[ii];B[ji]CR[ji]
C[If white cuts, black has a nice sequence.]
(;W[jh]CR[jh];B[ih]CR[ih];W[hi]CR[hi];B[ki]CR[ki];W[kh]CR[kh];B[lh]CR[lh]
;W[kg]CR[kg]
C[Lesson stops here...];B[mf])
(;W[jj]CR[jj];B[ih]CR[ih];W[hi]CR[hi];B[kj]CR[kj];W[jk]CR[jk];B[kk]CR[kk]
;W[ik]CR[ik];B[hk]CR[hk];W[hj]CR[hj];B[il]CR[il];W[ij]CR[ij];B[kl]CR[kl]
))
(;W[jf]CR[jf]
C[This is OK, but white wants more.]))
(;W[gm]CR[gm];B[hm]CR[hm];W[fm]CR[fm];B[gl]CR[gl];W[em]CR[em];B[in]CR[in]
;W[ho]CR[ho];B[io]CR[io]
C[The wall is too big.]))
(;B[qj]CR[qj]
C[This is too far from the main battlefield.])
(;B[jp]CR[jp]))
(;W[eq]CR[eq];B[co]CR[co])
(;W[ep]CR[ep];B[do]CR[do];W[eo]CR[eo];B[co]CR[co]TR[cr]SQ[bq]
C[100 percent for black.

Now it's very important that the marked stone is here and not in square. This is much bigger. Otherwise the results would be the same\: either white side will get captured.]
)
(;W[co]CR[co];B[eq]CR[eq];W[do]CR[do];B[ep]CR[ep]))
(;B[ep]CR[ep];W[cr]CR[cr];B[bq]CR[bq];W[br]CR[br]
(;B[eq]CR[eq];W[dr]CR[dr];B[co]CR[co];W[bp]CR[bp];B[bo]CR[bo];W[aq]CR[aq]
;B[dn]CR[dn]
C[80/100 for black.])
(;B[bp]CR[bp];W[co]CR[co];B[bo]CR[bo];W[bn]CR[bn];B[dr]CR[dr];W[eq]CR[eq]
;B[er]CR[er];W[fq]CR[fq];B[ar]CR[ar];W[fr]CR[fr];B[bs]CR[bs];W[fo]CR[fo]
C[60 percent result.]))
(;B[do]CR[do];W[co]CR[co];B[bq]CR[bq];W[eq]CR[eq];B[cn]CR[cn];W[dn]CR[dn]
;B[bo]CR[bo];W[eo]CR[eo];B[bp]CR[bp];W[ep]CR[ep]
C[Quite OK result.]))
(;B[dk]CR[dk]
C[No good follow-ups, no base.]
(;W[bj]CR[bj])
(;W[ck]CR[ck])))

