(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[Cho Chikun ]PB[Takemiya Masaki]WR[9p]BR[9p]DT[1985-01-30]EV[9th Kisei 2nd round]RO[Komi 5.5 1985.01.30-31]C[This game is one of Young-sun's favourite games. She studied it when she was young.

It is a very typical game between Takemiya Masaki (black) who plays moyo versus his rival and friend Cho Chikun (white) who has a very territorial style.
This game was part of a Kisei title match and was played in 1985.

]RE[B+Resign]
;B[pd]
;W[dp]
;B[pp]
;W[dd]
;B[pj]
;W[nc]
(;B[pf]
;W[pb]
;B[qc]
;W[kc]
;B[jp]
(;W[cf]C[Cho Chikun's style. A very territorial move.]
(;B[pn]LB[fq:A]C[Black played here in the game immediately, because approaching at A first would be a mistake.]
;W[gq]
(;B[cn]C[Takemiya switched styles here completely. Not a moyo-oriented move at all!
Cho Chikun likes territory a lot and perhaps Takemiya played here to not let Cho have it his own way.]
(;W[bp]
(;B[dk]C[This was a good move.]
;W[lq]C[White invaded. How should black answer?]
(;B[ko]LB[lo:A]C[This kosumi is stronger than the keima at A. It prevents white from connecting underneath.]
(;W[pq]C[Asking move: do you want the corner, or the lower side?]
(;B[oq]C[Black played here to protect his moyo.]
;W[or]
(;B[qq]
;W[pr]
;B[op]
;W[qr]
;B[rq]
;W[nq]
(;B[mo]C[In the game black played this calm jump. It aims at some aji on the lower side.
But..it is gote. Black could also play faster and take sente.]
(;W[ci]C[In the game Cho Chikun played here. Another move typical of his style. 
It is very territorial. White does not seem intimidated by black's huge moyo.]
(;B[kg]C[An interesting move by black, which keeps the aji in the top group of white open. 
Now it's time to invade for white.]
;W[np]C[White first played here. A strange move, what's the idea behind it?]
;B[no]
(;W[ji]C[White invaded here.]
(;B[kd]LB[ji:A]C[In the game black played this testing move.

Depending on white's reaction, black can decide to either attack white's stone at A, or not.]
(;W[ld]C[In the game that's why white played this hane.]
;B[jc]
(;W[lc]C[The only move for white.]
;B[jd]
;W[mg]
(;B[og]LB[mg:A]C[A standard shape move to put pressure on the A stone. This also defends black's right side.]
(;W[gc]LB[dc:A]C[Cho Chikun regretted this move. It was too far.

In the game Takemiya got the chance to attach at A because of this move.]
(;B[ig]C[An important move for black, to prevent a cut.]
(;W[qb]C[Another very typical move of Cho Chikun. Very big territorial endgame move.

White is not afraid to let black play in the centre: he thinks he can still live there. Afterall, it's his speciality.]
;B[dc]C[Takemiya attached and played a beautiful sacrificing combination.]
;W[ec]
;B[cd]
(;W[cc]C[A must.]
;B[db]
;W[cb]LB[fc:B][ed:A]C[Black will aim to play at A and B later.]
(;B[di]C[First another sacrificing technique!]
;W[dh]
;B[ch]C[Great combination. Difficult move to think of.]
;W[ei]
;B[dj]
;W[bh]
;B[eh]
;W[cg]
;B[ed]
;W[de]
;B[fc]
;W[eb]
;B[fi]LB[fb:B][ji:A]C[After the game, Takemiya said that at this moment he felt very good. And that he felt like he could win the game.

The 2 sacrifices on the left were beautiful. Perhaps the highlights of this game.
Black created thickness to attack the white stone at A and also has big aji to cut through with B and make some territory at the top.]
(;W[lg]LB[mf:A]C[In the game Cho Chikun bumped here, to prevent white from cutting at A. However, this was a mistake.]
(;B[kf]C[In the game black played here. A dubious move. Takemiya regretted this move.]
;W[mi]C[A good move.]
;B[fb]
;W[da]
;B[nd]C[Black cuts white's group in the centre off.]
;W[oi]C[White needs to make his centre group alive.]
;B[pi]
;W[oj]
;B[oc]
;W[ob]
;B[mc]
;W[nb]
;B[md]
;W[mb]
;B[kh]C[Vital point to destroy white's eyeshape.]
(;W[ph]C[In the game Cho Chikun played this hane, but it was problematic.
We can conclude that this was the losing move.]
;B[oh]
;W[pk]
(;B[qk]C[The best move.]
(;W[pl]
(;B[ok]C[Takemiya found this powerful cut!]
(;W[ql]C[White's only hope.]
;B[ri]C[A good move not to give white eyeshape.]
;W[rk]
;B[rj]
;W[qj]
;B[qi]
;W[nl]
;B[ni]C[Tesuji.]
(;W[ol]C[White needs to give the 2 stones up, it was painful.]
;B[nj]
(;W[rn]C[The real 'losing move'.]
(;B[mm]C[The winning move.]
(;W[ml]C[White tries to go out, but black knows he has won.]
;B[ll]
(;W[lk]
;B[mk]
;W[lm]
;B[kl]
;W[ln]
(;B[mn]C[Game over. Empty triangle wins the game!]
;W[lo]
;B[lp]
;W[mp]
;B[kp]C[White resigned.])
(;B[lo]C[This would be a mistake!]
;W[nn]C[Super tesuji.]
(;B[mn]
;W[oo]
;B[po]
;W[ro]LB[on:B][qp:A]C[Suddenly the white group came to live. A and B are miai.])
(;B[on]C[Like this white also lives.]
;W[mn])))
(;W[mk]C[This does not work either.]
;B[lk]
;W[mj]
;B[ki]))
(;W[oo]C[Now this aji does not work.]
;B[po]C[Black captures.]
;W[on]
;B[om]
;W[nn]
;B[nm]))
(;B[lk]C[If black would play somewhere else, there is a cuttingpoint.]
;W[oo]
(;B[on]
;W[qp]
;B[po]
;W[qo]C[White is connected! ])
(;B[po]LB[mm:A]C[Black should play here, but white has a lot of aji and can aim at running out.

In the game, with the black stone at A, white can not run out and there is no aji.])))
(;W[qn]C[This is white's last chance in the game.]
;B[qo]
;W[on]
;B[oo]
;W[ll]C[Still good for black, but white has to try to escape nevertheless.]))
(;W[nj]C[This is black's intention.]
;B[nk]
;W[mj]
;B[mk]C[Great for black.]))
(;W[qh]C[This might look dangerous, but black can manage.]
;B[ri]
(;W[rj]C[Not a tesuji here.]
;B[rk]C[Black is alive.])
(;W[rh]
;B[rj]
;W[ql]
;B[rl]C[White can not  cut.]
;W[rm]
;B[qm]LB[nk:A]C[Black cuts too. A is always sente for black.])))
(;B[ql]C[This looks normal, but is a very bad move here.]
;W[qm]C[White can play hane, and black can't cut!]
(;B[pm]
;W[qj]
;B[qi]
;W[rj]C[White makes a miai. Game over.])
(;B[rm]C[Same idea.]
;W[qj]
;B[qi]
;W[rj]C[Miai for white.])
(;B[ri]C[Black would have toplay here.]
;W[pm]C[A very painful result.]
;B[ok]C[This cut does not work.]
;W[nk]
;B[ol]
;W[nm]C[It's a net.]
;B[nj]
;W[ni]
;B[nl]
;W[ml]
;B[mk]
;W[om]
;B[nk]
;W[lk])))
(;W[ql]C[This would be overplay.]
;B[ok]
;W[pl]
;B[ri]
;W[rk]
;B[rj]
;W[nk]
;B[ol]))
(;B[qh]C[Just capturing is too easy for white.]
;W[ol]C[Great for white.])
(;B[ok]C[This cut is too much.]
;W[qk]
;B[qh]
;W[qi]
;B[pg]
;W[qj]
;B[ph]
;W[ol]
;B[nk]
;W[nl]
;B[mk]
;W[qm]C[A bit painful for black. White sacrifices the centre, but destroys black's right side. Cho Chikun's style.]))
(;W[nl]C[After the game, they discussed this variation.]
;B[pk]
;W[oh]
;B[ph]
;W[kk]C[White makes good eyeshape, and this is playable. A little better for black, but it now all depends on endgame.]))
(;B[kh]C[White hopes for this reaction.]
;W[mi]LB[ji:A]C[White sacrifices A and walks into black's moyo.])
(;B[mi]C[This would have been the vital point.]
(;W[kf]C[Not optimal.]
;B[kh]
;W[if]
;B[fb]
;W[da]
;B[gd]
;W[hf]
;B[hc])
(;W[kh]
;B[kf]
;W[li]
;B[mj]LB[me:A]C[Black builds his right side bit by bit. After this there is still a cuttingpoint in white's shape at A. ]
(;W[me]C[If white defends, black will take the top!]
;B[fb])
(;W[fb]C[If white takees the top, black will cut!]
;B[me]))))
(;W[mi]C[Jumping here would have been the proper move.]
;B[mf]C[When black cuts, white will try to make life. It won't be easy for black to kill the white group.]
;W[lg]
;B[lf]
;W[kh]
;B[jg]
(;W[lk]C[One way of playing.])
(;W[oi]
;B[pi]
;W[oj]C[White has good eyeshape.])))
(;B[de]C[Looks tempting. But black will become too heavy.]
;W[ed]
;B[ce]
;W[dg]LB[ji:A]C[White can aim to attack black. This attack will also help the stone in the centre at A.]
;B[ef]
;W[gf]
;B[eg]
;W[ei]LB[eg:1][dk:2]C[Black has 2 weak groups.]))
(;W[de]C[The normal joseki, but this would be too easy for black. Black makes life.]
;B[cb]
;W[eb]
;B[be]
;W[bf]
;B[bc]LB[gc:A]C[Black lives and white's stone at A feels a bit too close to his other stones.]))
(;W[mi]C[This would be normal. White tries to avoid black from building a huge moyo. ]))
(;B[qb]C[If black would play tenuki now, white can cut.]
;W[jf]
;B[kf]
;W[ke]
;B[je]
;W[le]
;B[if]
;W[jg]C[Good for white.]))
(;W[fc]LB[cc:A][dc:B]C[This would have been a better move. With this small keima black will need to invade at A. Attaching at B is not working anymore.]
;B[cc]C[Now there is only a ko. Also, white can think about trying to kill this stone when he is strong on the outside.]
(;W[dc]
;B[cd]
;W[ce]
;B[db]
;W[eb]
;B[bb]
;W[da]
;B[ca]C[Like this it's ko again.])
(;W[eb]C[This is a move that aims to kill. Depends on the outside.]
;B[be]
;W[bf]
;B[ce]
;W[de]
;B[db]
;W[ae]
(;B[bd]C[Like this black dies.]
;W[bb]C[Vital point.])
(;B[bb]C[Black played there himself.]
;W[ac]
;B[ab]
;W[ca]
;B[da]
;W[ba]C[Black is not alive locally. But there are cuttingpoints..so it's very risky.]
;B[df]C[After this cut, white needs to answer on the leftside.]
;W[ch]
;B[ec]C[Still aji here..risky for white now.])))
(;W[mi]C[If white jumps, black can later cut.]
;B[mf]C[Cutting move.]))
(;B[ki]C[A natural move to think about, but white will get a good result easily.]
;W[mi]
;B[kj]
;W[ph]C[Black has no territory anymore. Game over.]))
(;W[jd]C[Cutting here would be another overplay.]
;B[ke]
;W[ic]
;B[jb]
(;W[ib]C[Wrong side.]
;B[je]
;W[id]
;B[lc]
;W[kb]
;B[lb]
;W[ja]
;B[md]C[White's top is destroyed. Very good for black.])
(;W[kb]C[Correct side, but black has a super tesuji prepared.]
;B[ij]C[An amazing move.]
;W[ii]
;B[hi]
;W[ig]
;B[id]C[Black starts a driving tesuji.]
;W[je]
;B[jf]
;W[ie]
;B[if]
;W[he]
;B[hg]C[White is sealed in. Great for black!])))
(;W[jc]C[This would be good for black.]
;B[lc]
;W[lb]
;B[ld]
;W[mc]
;B[jd]
;W[id]
;B[ie]
(;W[hd]LB[cc:A]C[Like this black becomes stronger in the centre and can attack the one white stone more easily. Also, the top of white looks bigger than it actuall is. If black invades at A, there is still a ko.])
(;W[he]C[Double hane is also possible, but this makes it easier for black to attack the stone in the centre.]
;B[mb]
;W[kb]
;B[hd]
;W[ic]
;B[if]
;W[ge]
;B[hi]LB[mb:A][cc:D][oc:B][nd:C]C[This is a nice point for black to attack. Also, the top has become stronger for black, because of the stone at A. Black can block there at B or C.
On top of all that, there is still a ko at D.]
;W[]
;B[cc]
;W[dc]
;B[cd]
;W[ce]
;B[db]
;W[eb]
;B[bb]
;W[da]
;B[ca]C[A famous ko shape.]))
(;W[jd]C[Not good either.]
;B[lc]
;W[ld]
;B[ke]LB[jc:B][md:A]C[White is in trouble. There are 2 ladders, both good for black.]
;W[je]
;B[md]
;W[le]
;B[kf]
;W[mc]
;B[lb]LB[jc:A][me:B]C[Miai of A or B. Great for black.]))
(;B[li]C[Responding here would be too soft. It's white's intention.])
(;B[ki]C[Perhaps black can fight with this move.]
(;W[kj]
(;B[jj]
;W[kh]
;B[li]
;W[ii]LB[lh:A][jk:B]C[However, after this move, black has a problem. A and B have become miai for white.
At this moment the ladder at B is good for white.])
(;B[fp]C[Maybe black can first play here.]
;W[fq]C[If white responds, black can cut!]
;B[jj]LB[fp:A]C[Now this would be good for black, because the ladder has been broken with A.]
;W[kh]
;B[li]
;W[ii]
;B[lh]
;W[jk]
;B[ij]C[Black can move out.]))
(;W[jj]C[If black has the ladder, white will play here.]
;B[kj]
;W[jk]
;B[kk]
;W[jh]
;B[kh]LB[bk:A][cl:B]SQ[dk][cn]C[Black's right side becomes huge, but his marked group became weak. White will aim to attack it at A or B. 
The rest of the game depends heavily on how much profit white can gain from this attack. White needs to gain something substantial.

Difficult kind of game for both. Black has only one side of territory (the right) and white has more potential.]))
(;B[mr]LB[no:B][np:A]C[The exchange of A for B, makes this invasion for black less powerful.]
;W[lr]LB[iq:A]C[White can now block on this side. And this means the aji at A for black is gone.]))
(;W[ki]C[This would probably be too deep.]
;B[ih]C[This attack looks promising for black.]))
(;B[ld]C[Normal idea would be to still play this moyo technique.]
;W[lc]
;B[nd]))
(;W[jf]C[If white plays tenuki, later there is aji on the lower side.]
;B[mr]C[This peep is a good move.]
;W[mq]
;B[iq]C[This kosumi will become sente for black against the lower right side.]
(;W[kr]C[If white protects the lower right, black can invade the lower left.]
(;B[fq]C[like this.])
(;B[eq]C[Or here.]))
(;W[fp]C[If white protects the lower left, black can kill the lower right!]
;B[kr]))
(;W[ng]C[After the game they found this move during the discussions.]
(;B[ph]C[If black answers here, it's perfect for white.]
;W[ne])
(;B[ld]C[Black can think about this probing move.]
(;W[lc]C[Now if white plays the normal move, black will be very happy.]
;B[nd]C[White's one stone is alone in a huge centre. Good for black.])
(;W[ne]C[White will play here instead.]
;B[lc]
;W[lb]C[White can fight back at the top.]
;B[mb]
;W[kb]
;B[mc]
;W[nb]
;B[na]
;W[oa]
;B[ma]
;W[od]C[There is a cuttingpoint that white needs to defend. And this makes good eyeshape too.]
;B[kd]
;W[jd]
;B[je]
;W[id]LB[ph:A]C[This would definitely be playable for white. Black did destroy some of white's territory, but still has a weak group in the centre. Also, white is looking forward to play at A now.]))))
(;B[mp]C[Young-sun would play here.]
;W[mq]
;B[ld]C[Now black can take sente.]
;W[np]
;B[no]
;W[mo]
;B[nn]C[There is a small hole here, but it's not so serious.]))
(;B[op]C[Playing here immediately would be good for white.]
;W[qq]
;B[nr]
;W[ro]
;B[rn]
;W[qo]
;B[qn]
;W[pr]LB[nq:A]C[When white connects and lives in the corner, there is still a big cuttingpoint at A. ]))
(;B[qq]
;W[oq]
;B[qr]
(;W[mo]LB[ko:2][jp:1]C[Easy for white. White walks into the centre again and black's 2 stones are not seperated.])
(;W[op]C[Also a good move.]
;B[po]
;W[mo])))
(;W[jq]C[Does not work.]
;B[iq]C[White is seperated.])
(;W[jr]C[This looks better, but black can still cut.]
;B[ir]
;W[iq]
;B[kr]))
(;B[oq]C[Protecting the corner is not so good.]
;W[lo]C[This is a very good move for white.]
;B[jn]
;W[lm]LB[jn:B][jp:A]C[A and B are seperated and weak + white is walking into black's moyo. Great for white.])
(;B[lo]C[Also possible, but white can connect easily.]
;W[jq]
;B[iq]
;W[kp]
;B[ko]
;W[ip]C[White connects.]))
(;B[ck]LB[bp:A]C[Playing low seems better, because black wants to make a base. But this is a mistake, because of white's stone at A.]
(;W[cl]
;B[bl]
;W[bm]C[A tesuji.]
;B[cm]
;W[dl]LB[bk:A][bn:B]C[A and B are miai for white.]
;B[bk]
;W[bn]LB[bp:A]C[White can connect here because of the stone at A. Black is cut.])
(;W[dl]LB[ck:A]C[The low move at A also allows white to press down on black. This kind of aji makes it more difficult for black to make a moyo on the right side.])))
(;W[cp]C[Note that when white plays here, the situation on the left side is a bit different.]
;B[ck]
;W[cl]C[This move is less dangerous now.]
;B[bl]
;W[bm]C[This does not work.]
;B[cm]
;W[dl]
;B[bk]
;W[bn]
;B[bo]C[Black can capture.]))
(;B[ld]C[This technique is used to build moyo. It would be playable.]
;W[lc]
;B[nd])
(;B[je]C[Another moyo-oriented move.]
(;W[id]LB[ld:A]C[If white answers here, black is happy. It's better for black than playing at A immediately.]
;B[ld]
;W[lc]
;B[nd])
(;W[ld]C[But white will play here instead. Counter attack!]
(;B[jc]C[Black's usual follow-up.]
;W[kf]C[But white walks into black's moyo in the centre here. Good for white.])
(;B[lf]C[Trying to keep building moyo feels a bit thin for black.]
(;W[kf]C[White can aim at this kind of cutting weakness later.])
(;W[jg]C[Or white can aim at moves in this area to exploit black's weak shape.]))))
(;B[jj]LB[mj:B][jm:A]C[Most amateur players like this kind of move. We can't say that this is a bad move, but it's a bit vague. Black leaves many holes around A and B. White can later exploit one of these.]
;W[je]C[This builds for white, and aims at invading the centre too. Difficult for black.]))
(;B[fq]LB[qq:A]C[Black could play here, but he didn't, because of the 3-3 invasion we just saw in the previous diagram.]
(;W[cn]C[White will not respond. It would be good for black.])
(;W[qq]C[White will invade.]
;B[qp]
;W[pq]
;B[oq]
;W[or]
;B[nq]
;W[nr]
;B[mq]
;W[rp]
;B[ro]
;W[rq]
;B[qn]
;W[dn]LB[dn:B][fq:A][mr:C]C[The exchange of A for B is good for white. We just saw that A was not a good move for black, because the lower side is still open. There is big aji for white at C.])))
(;W[hq]C[This is not recommended here.]
;B[ho]C[Black can create a moyo, and this is sente for black.]
(;W[fq]C[A must for white.]
(;B[pn]C[Black keeps building his moyo.])
(;B[iq]C[Or black can play here.]
;W[hp]
(;B[io])
(;B[jn]C[Also possible.])))
(;W[cf]C[If white plays tenuki, black can attack the lower side.]
;B[gq]C[Nice for black.]))
(;W[fq]LB[gq:A]C[After the game, the players discussed this move. Or playing at A, which would also be a good move.])
(;W[gq]
;B[ho]LB[go:A]C[Now this kind of move, or playing at A for black, is not sente. White can play tenuki.])
(;W[qq]LB[pj:A][jp:B]C[The saying says: when your opponent has a double wing formation (with A and B in this case), you should invade. This is also a good move here.]
;B[qp]
;W[pq]
;B[oq]
;W[or]
;B[nq]
;W[nr]
;B[mq]
;W[rp]
;B[ro]
;W[rq]
;B[qn]C[White gets sente and can still play in the top left.]
(;W[cf]LB[jp:A][fq:B]C[Maybe the stone at A looks strange, but it's ok. However, approaching at B for black afterwards would be the wrong direction.]
(;B[fq]LB[mr:A]C[This is wrong. The lower side is very open still, around A. Black can not make much territory here.])
(;B[fp]C[Higher would be better.]))
(;W[dj]C[Also good here, but not Cho Chikun's style.

])))
(;B[lc]C[Also possible. A famous opening, it has been played by these 2 players too.]
;W[qc]
;B[qd]
;W[pc]
;B[od]
;W[nb]
;B[me]
;W[nq]
;B[lq]
;W[qq]
;B[qp]
;W[pq]
;B[op]C[White has 3 choices in this shape.]
(;W[nr]
;B[mo]
;W[kj])
(;W[np]
;B[oq]
;W[or]
;B[pr]
;W[qr]
;B[nr]
;W[ps]
(;B[no]C[The normal joseki move.]
;W[mr]
;B[mp]
;W[ns]
;B[mn]
;W[lo]
;B[mo])
(;B[mr]C[Sometimes black can fight.]))
(;W[rq]
;B[np]
;W[nr]
(;B[lo]C[To protect the cut.])
(;B[rp]C[To protect the right side.]))))