(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.50]
PW[Kobayashi Koichi 9p]PB[Otake Kideo 9p]DT[2012-04-28]PC[The KGS Go Server at http://www.gokgs.com/]C[rjm [1d\]: good mornign
kashmir [?\]: hello
zaci1 [12k\]: hi
dbrid [?\]: hi
rjm [1d\]: yup
dbrid [?\]: yup
Monkee [2k\]: hello
Flenwan [5k\]: hello
madRock [3k\]: HI Guys!! finaly a lesson :D
]
(;B[qd]
;W[dp]
;B[cd]
;W[qp]
;B[cn]
;W[fq]C[zaci1 [12k\]: ^^
]
;B[bp]C[zaci1 [12k\]: yup
]
;W[cq]
;B[ck]LB[ec:B][dj:A]C[If Black had played the A joseki, then White would not allow Black to make a B wall.
But Black did not.
]
;W[fc]LB[ec:A][hd:B]C[If White A, the Black pinch at B works well with the upper right corner.
]
;B[oc]
;W[cc]
;B[dc]
;W[dd]
;B[cb]
;W[bc]
;B[ed]
;W[de]
;B[ec]
;W[bb]LB[ec:A][oc:D][ef:E][dg:C][ck:B]C[How to defend the A group? 
What characteristics go into the deciding?
rjm [1d\]: c9 group is very strong for now so i'd rule out d13 right away
kashmir [?\]: top and left low
dbrid [?\]: unfinished lower right corner
rjm [1d\]: oh, so no reason to e14
]
(;B[hc]LB[de:A][qi:B][pj:C][qj:D][op:E]TR[ed][fd][ge][hf][jh][kh][li][mi][nj][oj]C[Is the A group finished?

Where on the Right?
madRock [3k\]: kill of the c16?
Monkee [2k\]: I would feel the urge to play on the left as white
Monkee [2k\]: I would be afraid of c16 aji for black :)
mythical [1d\]: fine for now , but defending weakness will be solid
rjm [1d\]: i can't see black doing anything severe, so i'd say it is done for now
rats [1k\]: adding another would remove black getting a free move there
rjm [1d\]: can't use it directly and doesn't want to push at e15
madRock [3k\]: reverse sente?
mythical [1d\]: r 11
Flenwan [5k\]: Q10?
madRock [3k\]: around q10?
mythical [1d\]: hi
rjm [1d\]: B seems to fit the characteristics the best
Monkee [2k\]: it would give black a great move on the right?
rats [1k\]: the right side is good for both
goplayer20 [3k?\]: nice game. ty for the review
]
(;W[qi]LB[qi:B][qj:A]C[A & B are both safe moves.
A builds white, while B removes Black's development.
Flenwan [5k\]: why no options on the 4th line?
Flenwan [5k\]: ty
rjm [1d\]: yes
Monkee [2k\]: yep
Flenwan [5k\]: yes
kashmir [?\]: yup
kashmir [?\]: great finding the basics
kashmir [?\]: ty
rjm [1d\]: thanks for the lesson shy
mythical [1d\]: thanks
madRock [3k\]: Thank you!
dbrid [?\]: thanks
mgelo [2d?\]: thank you shy
hilbert90 [-\]: thanks, great
Monkee [2k\]: thank you
bradford [5k\]: Thanks shy!
xaero [-\]: thanks!
xaero [-\]: bye!
]
;B[nq]
;W[pq]
;B[kq]C[The bottom becomes double value and double hassle.
rjm [1d\]: j3
]
;W[iq]LB[nq:A]C[Does the A group need defense?

How to deal with the right side?
Flenwan [5k\]: not yet
madRock [3k\]: yes
Flenwan [5k\]: looks very easy to run out still
madRock [3k\]: black needs to be strong with it to deal with right side
dbrid [?\]: ok
rjm [1d\]: good exchange for white too
]
(;B[qg]C[dbrid [?\]: would p5/p6 be double purpose?
dbrid [?\]: thx
]
;W[no]
;B[ko]LB[kp:B][lp:A][lq:C]
(;W[pk]LB[lc:1][cd:B][cg:2][oi:A]C["Usually, White will take up a larger scale position with A. But Kobayashi prefers to play solidly so that he can play more aggressively elsewhere later without having to worry about this area."

Where for Black?
How to use the B aji?
mythical [1d\]: perhaps they mastered the principles so now they can play only via reading  :)
rjm [1d\]: ah i thought A
madRock [3k\]: how would black answer white peep at M4 here, am asking how L5 is a defence for l3 group?
mythical [1d\]: still , to decide whats more important is not easy
rjm [1d\]: :)
mgelo [2d?\]: top gogt big
rjm [1d\]: aji stone
mgelo [2d?\]: small
rjm [1d\]: black has a desire to use his stones
]
(;B[dg]LB[ee:A][ef:B]C[White A & B are both sente.
Which has the best "next move" ?
mythical [1d\]: basicly its more active
rjm [1d\]: i see
]
;W[ef]
;B[fd]LB[dg:A]C[As usual, we punish the A stone for not responding.
]
;W[eg]C[This also gives white good outside thickness.
]
;B[kd]LB[ob:F][ic:A][kc:C][nc:E][pc:G][jd:B][ld:D]C[Time for White to invade the top. 
Why invade rather than reduce?

Remember the 2 item list for invasions?

White cannot live casually, so White will play forcing moves until health shows itself.
madRock [3k\]: count
goplayer20 [3k?\]: can i do something in the center?
mythical [1d\]: so outside gains also a factor - never thought about it that way
madRock [3k\]: this is acctually a very good lesson for me! :D
rjm [1d\]: attach to something :)
hilbert90 [-\]: find forcing
Monkee [2k\]: safe gote or sente
mgelo [2d?\]: run to E14
waynec [8k\]: Is G16, threateining to use the aji, a forcing move?
madRock [3k\]: i thought D or E
mythical [1d\]: how about A to see how oponent reacts?
]
(;W[pc]C["White 36 Becomes the key move of the opening. White's aim is to settle himself as quickely as possible inside Black's moyo, but he is unable to secure his group completely. Black can look forward to harrasing the group later.
rjm [1d\]: wayne, g16 does look forcing, but it is not clear that it helps
waynec [8k\]: ah, ok
]
;B[pd]
;W[ob]
;B[pb]
;W[nc]
;B[od]
(;W[kc]
;B[jc]
;W[ld]
;B[jd]LB[lc:B][le:A]C[White has played 5 forcing moves (sente moves).
Now white will decide between A and B for his gote move.
A if he feels a need to run out, and B if he feels he has the time to play more calmly.
]
;W[lc]LB[cd:A][bf:1][dg:B][qm:2]C[Two areas to consider.
But area 1 is easier for Black due to the aji there.
]
(;B[bf]
;W[dh]
;B[ci]
;W[ch]
;B[bh]
;W[di]
;B[cg]
;W[cj]
;B[bi]
;W[dj]
;B[bj]
;W[dk]
;B[cl]
;W[ce]
;B[be]
;W[bd]C[During the game, the pro's watching the game thought that the outcome of this sequence favored white. But the 2 players thought it was equal.

Only 1 area left to deal with. But Black can play a forcing move just before that.
Monkee [2k\]: who was right? :)
madRock [3k\]: why black playd b15?
mythical [1d\]: i wonder , would it be good idea for black try reduce the power of white's wall?
]
;B[fh]LB[eh:A]C[Later on, White may be able to do more than just A.
So now is a good time to peep.


]
;W[eh]LB[qm:1][ko:B][no:A]C[On top, White felt it appropriate to invade, because it was easy enough, and no one could use the outside thickness.

What about here for Black?
mgelo [2d?\]: good
goplayer20 [3k?\]: i'd say good for a pro, i'd feel less certain in a game
]
(;B[ol]C["When touched, touch back".
rjm [1d\]: black is going to make use of the bad relationship between A and q9
goplayer20 [3k?\]: ok, ty
]
;W[ok]
;B[nl]
;W[qm]LB[ld:B][ol:A]C[White is pressed down to the 3rd line, so Black feels satisfied.

Also, Black can treat the A stones as forcing moves.
If he gives them up, they can still be used as aji.

Time to attack the B stones.
rjm [1d\]: those were white's points to begin with
rjm [1d\]: 93
]
(;B[le]LB[nb:A]C[If Black A, White jumps out too easily.
Monkee [2k\]: isn't black worried about his stones being split on the bottom? I mean L5 and O8
goplayer20 [3k?\]: m16 group
goplayer20 [3k?\]: sorry, before p8
]
;W[pa]
;B[qb]C[rjm [1d\]: black is gonna double hane
]
;W[me]C[goplayer20 [3k?\]: why not attack B group first, wouldn't that give b more information as to whether invade or reduce?
]
;B[mf]LB[lf:A]C[Black A is also too easy on White. White will just live.
]
;W[lf]
;B[ke]
;W[ne]LB[mf:A]C[The A stone cannot be captures, so black has time to take the top.
]
;B[nb]
;W[mb]
;B[oa]
;W[nf]
;B[mg]
;W[pf]LB[qg:A]C[White is threatening to hurt the A stone.
There are 2 ways to help A.
rjm [1d\]: o13?
rjm [1d\]: ah
]
(;B[qf]C[This is the first move that Otake regretted.
see var.
rjm [1d\]: right idea wrong move
]
;W[nh]C[rjm [1d\]: same spot black should have played
]
;B[mh]
;W[mi]
;B[li]
;W[mj]LB[li:B][nl:A]C[Now the A stones are showing their weakness.

Black has not quite finished the shape around B, but it is not as urgent at the A stones.
]
;B[mn]C[This does not necessarily save the 2 stones, but makes all the stones in this area work together.
]
(;W[mp]C[The pro's watching the game felt this move was "unprofessional".
see var for more normal way.

Now black has time to finish his shape (in sente).

]
;B[kh]
;W[ng]LB[lm:A]TR[ko][op][gq][hq][kq][nq]C[How can Black handle these stones?
First, we must notice that they are not a group. They have no area that they control. They have no shape for living.

So we want to use the properly rather than make them (force them) to be a group.

How?
rjm [1d\]: the tool to use would be white's 2 space thin areA?
mgelo [2d?\]: im just looking at P4 weakness
Chachi [2d\]: h2?
rjm [1d\]: p4 looks (for now) like it's going into danger
]
;B[gq]
;W[gp]
;B[hq]
;W[hp]
;B[ir]
;W[hr]
;B[gr]
;W[jr]C["Black's stones to the right will decide the fate of the game."]
;B[hs]
;W[jq]
;B[fr]C[Black ends up with profit (minus for white and plus for Black).
madRock [3k\]: its funny how its good when profesional does this whether we would be accused of creating another weak group by hurting our stones :)
]
;W[lj]LB[li:A][mn:C][no:E][ip:B][nq:D]C[Is it time to deal with the A situation?
..... the cut of B?
..... the outside C situation?
..... the D situation?

White's turn here does not question the health of the A group, but rather removes the path home of the S stones.

Since white has the B cut to worry about, this should give black the ability to work with C or D.

To me, a big thing just happened...
for the A stones to connect out well, the B stone will have to drop down to C, causing white to E, which really hurts the D group.
But the D group has the weak F stone to help it out.

So the big question is, Which is the main group, and which is the aji group?

Seems to me, that the D group is the aji group because it bothers white at F & G.
So saving the A group makes it hard for white to kill the D group. Even if D dies, white will have to spend many moves killing it, and saving cuts.Monkee [2k\]: didn't it hurt l3 instead of helping it?
rjm [1d\]: it did hurt the actual l3 stone, but also used it i guess?
mgelo [2d?\]: B thinks "i'm losing some of these stones so let's get paid for it
rjm [1d\]: haha that's so true
rjm [1d\]: i think you meant the D stone
]
;B[mq]LB[ip:G][fq:F][kq:B][nq:A][ir:D][kr:C][js:E]
;W[lp]
;B[kp]
;W[io]
;B[kr]
;W[js]LB[ko:B][mp:C][gq:A]C[The B group is not out of danger, so Black does not have time to save the A group.

Black can connect out for safety, or bother the C group.
Connecting out is gote with no profit, while bothering the C group is sente and removes white profit.
]
;B[op]C[Monkee [2k\]: schroedinger's group :)
]
;W[nn]C[same stuff applies.
]
;B[pp]
;W[qq]
;B[pn]
;W[mm]LB[mn:A]C[Saving A (which helps the getting out idea), continues to bother white's group.]
;B[lm]
;W[ml]LB[ko:A]C[Black must continue to settle the A group.
Again, Black can run out, or look for eyes on the right while splitting white.
]
;B[qn]
;W[rm]LB[mn:B][oq:A]C[Black sees that he can save the B stone, and play A (good for base) while bothering w hite.
]
;B[mo]
;W[np]
;B[oq]
;W[lo]
;B[ln]
;W[nm]LB[rn:C][oq:B][qq:A]C[Black's position is coming together nicely.
Next, Black must continue getting the B group healthy while bothering the A group.
]
;B[pr]
;W[qr]
;B[os]LB[rm:B][qp:A]C[White can connect the A group to the B group, but then Black lives easily.
White needs to make live hard for black (white is falling behind).
]
;W[qs]
;B[jn]LB[gr:A]C[So, the Black group does not have 2 eyes yet, and is behind enemy lines. So white feels there is a chance.
But the A group has much aji (as we shall see).
]
;W[er]LB[qp:A]C[Black can disconnect the A group in sente, removing white's future points.
]
;B[rn]
;W[sp]
;B[ll]C[A strong thick move, but not quite sente.
]
(;W[ki]LB[mg:B][fp:A][gq:C]C[White keeps black behind enemy lines while threatening the black stones.
These Black stones will not be bothering any White, but the bottom stones will. So the Bottom stones are more important.

Time to use the bottom aji.

This is a good example as to "how to find tesuji".
First, we notice that, if Black A, White connects and there is not much for Black to do. So Black uses the other attari.

]
;B[eq]
;W[dr]C[again, black is playing a tesuji, but rather the simple capture, which may or may not set up a tesuji.
]
;B[fp]
;W[fo]LB[eo:C][go:B][ip:A]C[Now, the main moves are done, and white has outside cuts, and black has nice shape.
Now is the time to look for tesuji.

It's important to understand, that the cut of B, and the throw in of A are the main moves here. C is a "helping option", not a main option.

So, we are not looking to play C, but rather A and B.


kashmir [?\]: wow
kashmir [?\]: using aji
]
;B[go]LB[fn:C][eo:B][ep:A]C[If white starts the ko at A, he is risking both his groups here, while black is risking only his "aji group" (which he was willing to throw away).

B keeps white strong on t he left side, but the fight is all about this Black cutting stone.
]
;W[fn]LB[ip:A]C[The throw in of A is all about removing white's liberties. 
But Black has another way to shorten White's liberties in sente.
rjm [1d\]: yeah
kashmir [?\]: yes
Monkee [2k\]: yes
]
;B[fs]C[White must remove his own liberty in order to stop Black's life.
]
;W[is]C[Now black can use the throw in.
]
(;B[ip]
;W[jp]LB[hn:B][go:A]C[Now Black must use the A stone properly.
If Black does the simple attari, his stone becomes heavy (losing a precious liberty), and he must play B either way.
So there is no reason to play the attari. Besides, if Black attaris, then white's weakness if fixed! Don't help white like this!
]
;B[hn]
;W[in]
;B[im]
;W[hm]C[mgelo [2d?\]: shortens B's pwn lib
]
;B[jo]
;W[il]
;B[jm]
;W[gn]
;B[ks]
;W[hr]
;B[ro]C[The ko is too big. White must take it.
]
;W[ho]
;B[rp]C[The game continues, but White cannot catch up, and white eventually resigns.
]
;W[kg]
;B[pm]
;W[pl]
;B[om]
;W[mk]
;B[bq]
;W[hg]
;B[em]
;W[el]
;B[jg]
;W[lh]
;B[jh]
;W[ii]
;B[br]
;W[ep]
;B[gf]
;W[hf]
;B[ff]
;W[ge]
;B[fe]
;W[gh]
;B[en]
;W[eo]
;B[cr]
;W[dq]
;B[rh]
;W[ie]
;B[jf]
;W[jb]
;B[ib]
;W[ka]
;B[nd]
;W[md]
;B[gd]
;W[ia]
;B[ha]
;W[gb]
;B[ja]
;W[co]
;B[bo]
;W[ia]
;B[kf]
;W[lg]
;B[ja]
;W[nr]
;B[mr]
;W[ia]
;B[he]
;W[hb]
;B[ja]
;W[or]
;B[ns]
;W[ia]
;B[ic]
;W[ga]
;B[ri]
;W[rj]
;B[fm]
;W[fl]
;B[ih]
;W[hh]
;B[ik]C[White resigns.
])
(;B[ho]
;W[ip]))
(;W[]
(;B[mk]
;W[nk]
;B[lk]
;W[om])
(;B[lk]
;W[mk]
;B[kj])))
(;W[nn]TR[qn][no][qo]
;B[mo]
;W[mm]
;B[lm]
;W[ml]
;B[ll]
;W[mk]C[Kobayashi must have felt that taking these 2 stones in gote, and giving black this health on the outside in sente, was not good enough.
]))
(;B[nh]LB[mg:A][qg:B][nh:C]C[Black C helps the A & B stones, while threatening White.]
;W[oh]
;B[rh]LB[nh:A][rh:B]C[Now that the A stones are stronger, Black feels secure enough to connect with B, which threatens white's area.
])
(;B[rh]
;W[qf]
;B[rf]
;W[mi]))
(;B[nb]))
(;B[le]LB[qm:A]))
(;B[]
;W[mb]))
(;W[pa])
(;W[lc]
;B[kc]
;W[me]))
(;W[pg]C[mythical [1d\]: depends on if you can reduce well
]
;B[qh]
;W[ph]
;B[ri]
;W[qj]
;B[rj]
;W[pf]
;B[qf]
;W[km]
;B[ir]
;W[hr]
;B[jr]
;W[kn]
;B[lr]
;W[ld]
;B[lc]
;W[kc]
;B[jc]
;W[kb]
;B[jb]
;W[le]
;B[lb]
;W[ke]
;B[jd]
;W[if]C[kashmir [?\]: reduce and grow at the same time
])
(;W[mc])
(;W[qf]))
(;B[kd]
;W[ci]))
(;W[lp]LB[ko:A][nq:B]C[rjm [1d\]: feels tome like you must m3
madRock [3k\]: and if L4 black is just a stick in the middle
]
(;B[kp]
;W[mr]
;B[lo]
;W[mp]
;B[mo]C[mgelo [2d?\]: it's a wall!
]
;W[np]C[rjm [1d\]: if black answers on the bottom at m3, can white really seal anyway?
madRock [3k\]: oh  i see
rjm [1d\]: it looked to me like black could break out 
])
(;B[lq]C[rjm [1d\]: l4 k4 k3 n4 m5 n5 
]
;W[kp]
;B[mp]
;W[jp]
;B[mo]
;W[nm])))
(;AW[pn][io])
(;B[qm]
;W[om])
(;B[no]C[dbrid [?\]: i was thinking leaning in P column
]
;W[io])
(;B[oo]C[rjm [1d\]: knight's move is same thing but just leaves more of a weakness
]
;W[pn]))
(;W[]
(;B[cg]
;W[ce])
(;B[ce]
;W[cf]
;B[df]
;W[ee]
;B[bf]
;W[cg]
(;B[bg]
;W[be])
(;B[be]
;W[bg]))))
(;B[fd]))
(;B[iq]
;W[]
;B[lq]
;W[]
;B[fq]LB[fq:B][lq:A]
;W[hq]
;B[hp]
;W[ip]
;B[hr]
;W[jq])
(;B[pd]
;W[nc]
;B[qf]
;W[jc]
;B[oc]
;W[nd]C[mgelo [2d?\]: 1-2-3 principle
]))
