(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
GN[Fuseki developed by Cho U and So Yokoku, part2]C[tenzaru2 , 9d on Tygem is Cho U or So Yokoku 9p
It's unclear, who is playing. I heard that he is Cho U, but Cho U never used this fuseki in tournaments
So Yokoku, 9p used it twice. With success!
He beat Yamashiro Hiroshi (former honinbo title challenger) and legendary Takemiya
It's good to mention that So had 0-2 score with Takemiya and 0-3 with Yamashiro, according to Go4Go.net database.
So, this unusual fuseki helped him to beat 2 difficult opponents
]
(;B[mo]C[We will do this:
1. Study one game, played using this fuseki
2. Study typical josekis, which can be used in this fuseki
3. We attach collection with 15 games, played by tenzaru2, also games between So and Yamashiro and So vs Takemiya
You can study these games at home, before trying that fuseki on KGS or in real tournaments
]
;W[dd]C[tenzaru2 is Black. White is one of Tygem 9d players
Fuseki he invented is even more unsual, than fuseki invented by Wang Chenxing (we explained it in 2 lectures)]
;B[og]
;W[dp]
;B[ge]
;W[gc]
;B[em]C[Tenzaru's fuseki
He plays it in every game on Tygem, both as B and W]
;W[qp]
;B[fp]
;W[cm]
;B[cl]C[It's a classic pattern for this fuseki. We will study it later, when we will study josekis]
;W[bl]
;B[dl]
;W[bn]
;B[id]
;W[ck]LB[ec:A]C[I think it's greedy for W. I would prefer to defend solidly at A]
;B[fc]
(;W[fd]C[Another greedy move -]
;B[gd]
;W[ec]
;B[fb]
;W[gb]LB[hc:A]C[It's little bit better to play at A, but both plans are great for Black
We will study this joseki later]
;B[fe]
;W[ed]
;B[hc]
;W[hb]
;B[ib]
;W[eb]C[Black is happy to get nice moyo]
;B[pc]C[It's the right shimari
Later we will explain why is it bad for Black to play at 4-4 here]
;W[jc]LB[pm:A]C[I think, it's too early. I would prefer to develop at A first]
;B[ha]
;W[fa]
;B[ic]
;W[nc]
;B[pe]
;W[ke]
;B[lc]C[Vital point! Now W has problems with this group
It was bad idea to fight so close to B's thickness that early]
;W[me]
;B[lf]
;W[ld]
;B[kc]
;W[mf]
;B[mc]C[Vital point]
;W[lh]
;B[pn]LB[nd:A]C[Black may try to kill W directly, but as you know, single group never die
So, Black wants to prepare attack first. The best idea for B here -  to set up splitting attack, by creating another weak group, so he will be able to attack them at the same time

Also, please pay attention that A is too greedy here
It's a big move - at least 20 points, but Black must not use this fuseki for creating territory
Speed development is very important here!]
;W[qn]
;B[qm]
;W[pm]C[It was a bad idea for W to fight here, because he has weak group in the center]
;B[ql]
;W[po]
;B[on]
;W[rn]
;B[oo]
;W[op]
;B[mq]
;W[pl]C[New overplay]
;B[pk]
;W[nm]
;B[mm]
;W[nl]
;B[qj]
;W[mn]
;B[ln]
;W[nn]
;B[no]
;W[lm]
;B[pq]
;W[pp]LB[qq:A]C[This is very dangerous. It must be at A]
;B[km]
;W[ll]
;B[nk]LB[ol:A]C[Solid moves, which prepares atari at A]
;W[kn]
;B[lo]
;W[jn]LB[oq:A]C[It's more important to defend the corner at A]
;B[qq]C[It seems that W missed this attack]
;W[oq]
;B[or]
;W[nr]
;B[pr]
;W[nq]
;B[rp]C[Now W is in big trouble
Later B won this game without any problems

Now we will go to the next step and study some josekis, based on these high stones])
(;W[df]
;B[gd]
;W[oc]C[I would prefer to sacrifice that stone]))
(;B[pd]
;W[me]C[Reason why tensaru2 can be Cho U:
Cho U used this unusual kakari several times in his recent games. He beat some 9p players, using it.
But he never used the whole construction in tournaments

Another vote for Cho U:
Tenzaru2 has 146 wins - 18 loses on Tygem. Great score! I am not sure that So can play on that level.
He is not a weak 9p. He beat many top players before, but it's clear that Cho U is stronger than So Yokoku. 
Cho U was #1 in Japanese pro world, till Iyama Yuta appeared]))
