(;FF[4]GM[1]SZ[19]ST[2]CA[UTF-8]AP[SGFC:1.13b]VW[]

GN[eiko-woj(B) IGS]
PB[woj]
BR[23k]
PW[eiko]
WR[22k]
KM[0.5]
DT[2003-02-08]
PC[IGS:  igs.joyjoy.net 6969]
RE[W+7.50]
TM[60]
RU[Japanese]
US[Brought to you by IGS]

C[woj:  Thank you for reviewing my game.  One go concept that don't quite understand is "aji".  I would be grateful if you could provide some examples of good and bad aji in the game.

Hi, my name is Rainer (Beholder 11k at KGS)
This is my first review at the GTL, so I will probably over do it a bit with my comments. If you should have any questions about my review, please contact me at the.beholder@web.de

General comments:

a) Aji means the possibilities that are still left in a position. During the game the aji of positions can change with every stone that comes to the board. It is, of course, desirable to exploid the good aji of each of your positions and the bad aji of each of your opponents positions to the full.

b) During the opening you should have an eye for the moyo of your opponent. White dominates the left side in this game and influences the whole board.

c) Have the principle "corner, sides then center" always in your mind.

I hope my comments help you to get better at this great game

Best regards

Rainer (Beholder)];B[pd];W[dp];B[qp];W[dd]
(;B[fq]LB[fc:A]C[woj:  Is this the proper direction for attacking the corner? Should I have played F17 instead, or does it not matter at this stage of the game?

*B*: As you can see in the variations, there is only a little difference between both approaches. I would choose the shimari at A]

(;W[ip]LB[dj:B][cn:A]C[*B*: The standard answer to the two space high pincer is the double kakari at A, if there is no W stone in the area of B, see variation.]

(;B[fo];W[dn];B[lp]C[*B*: Here you try to attack the single W stone on J4 while trying to get territory in the lower right corner. This is a good strategy.]
;W[op]LB[hn:B][in:A]TR[fo][fq]C[*B*: This stone by W makes things a bit complicated. Now W has two weak stones, which threaten your stone at M4.
My choice would be A or B, to escape with J4 into the center while building pressure on your still weak marked group.]

(;B[pq]C[*B*: Here you try to get the corner for yourself, but you do not put any pressure on the attacking W stone which is already in a pincer!
See variations for other possiblilities.];W[qo];B[oq];W[po]
TR[po][qo][op]C[*B*: The marked W group has good aji];B[pp]
LB[qj:A]CR[pj][qk]C[*B*: This stone is very small and not necessary. A play around A would be much bigger.]
;W[oo];B[np]LB[qj:A]TR[oo][po][qo]CR[pj][qk]C[*B*: Another small move. W has a three stone wall (marked) which influences the right side. Again a play around A would be much bigger.]
;W[pk]CR[qj]C[*B*: The third line would be better.];B[ph];W[in]
TR[fo][fq]C[*B*: W goes towards the center, putting more pressure on the marked stones.]
;B[fc];W[hc];B[fe]LB[cc:A]C[*B*: Another possibility would be A, taking the corner.]
;W[df]
(;B[db]C[*B*: You are trying to get into the corner and to make some eyespace at the egde. There are bigger moves, see variation.]
;W[kc];B[nc]TR[nc][pd][ph]C[*B*: The marked B stones have good aji]
;W[dj]C[*B*: Let's have a look at the board at this stage of the game. White has the complete left side, a piece of the right side and a group on the top. The only weak group of white is the one on the lower side. Black has the lower right corner, the upper right corner (which is still open for invasion) and two weak groups which will sooner or later become a heavy burden.]
;B[fg]LB[cc:A]C[woj:  Is this move too small?  Would something like F10 or elsewhere be better?

*B*: Your marked group is still weak, a bigger play would be at A to give it some foundation.]
;W[dh]C[*B*: W clearly dominates the left side.];B[kn];W[il]
;B[fm]LB[dr:A]C[*B*: This group is still weak, it would be better to strengthen it with e.g. A.]
;W[dl]C[*B*: W has got a lot of points on the left side.]
(;B[bc]LB[cc:A]C[*B*: A would be better, see variation];W[cc]
;B[cb];W[bd];B[bb];W[ed];B[fd]TR[bb][cb][db][bc]C[*B*: The marked B stones have bad aji]
;W[fk]C[*B*: Now B is in deep trouble and should have a hard time to make two eyes]
;B[gl]C[woj:  When I was playing, I didn't realize how isolated my group in the lower right was getting.  I was concentrating on preventing white from connecting his center bottom group to his group on the left, not realizing that my group would have problems later on.  Would H3 be better?

*B*: D2 would be much better];W[km]CR[gk]C[*B*: W should play G9 to increase the pressure on the still weak group]
;B[lm]C[*B*: One of the basic principles of go is to play the urgent moves befor the big ones. The weak group is still urgent.]
;W[kl];B[ll];W[kk];B[gk]C[*B*: W missed his chance to enclose the B group]
;W[gj];B[hj];W[fj];B[hi]CR[hk]C[*B*: The marked cutting point is more urgent.]
;W[hk];B[hl];W[ik];B[kh]TR[hk][ik][kk][il][kl][km][in][ip]C[woj:  At this point, I wasn't really sure where to play.  I figured that this move would help me block white from advancing upward from the center of the board.  What other moves would be good here?

*B*: That would only make sense if you want to kill the marked W group. W has produced a group that is now much weaker than some stones before, but it is not weak enough for you to kill.
Go for territory in the corners and at the side, the center is seldom worth many points.]
;W[li]TR[ll][lm][kn]C[*B*: The marked B stones have bad aji, because there is not much possible to make out of them.]
;B[lh]C[*B*: You try to defend a territory that is open at two sides. You have to defend against the W top middle group and the lower right group which will grow only stronger while you try to defend.]
;W[ni];B[kj]C[*B*: I can't see any sense in this stone. You can not prevent W from connecting.]
;W[lk];B[nm];W[om];B[nl];W[mh];B[lj];W[mk];B[mj];W[nk];B[nj]
;W[ok]TR[mh][li][ni]C[*B*: The marked W stones have bad aji]
;B[oj]C[woj:  This sequence of moves (67 - 73) seemed pretty strange to me.  Who got the advantage here?

*B*: W got the better end of this sequence. Her weak group is now connected and there is still the W group at the middle top.]
;W[oh]SQ[gb][mb][hd][le]C[*B*: W should not continue playing there, the top group needs more attention and has more potential (aji) (see marked plays).]

(;B[pg]CR[og]C[*B*: P13 would be better];W[og];B[of];W[nf];B[oe]
;W[ne];B[md]C[woj:  I wasn't too sure, but it looked like I could kill white's top group if I played right, so I tried to prevent white from connecting to the two stones at the top.]
;W[lf];B[ke];W[kf];B[je];W[jf];B[if]C[*B*: Here you seem to leave your plan to attack the top group. W middle group is in deep trouble so this seems correct.]
;W[mb];B[nb];W[nd];B[mc];W[lb];B[le];W[pi];B[oi];W[qi];B[rg]
CR[rh]C[*B*: S12 would also be possible and would grant you more territory]
;W[mi]
(;B[ng]CR[ki]C[*B*: Another possibility would be L11];W[ki]
;B[ji]C[woj:  This was a foolish mistake on my part.  I should have played K10.

*B*: This is not the mistake, it comes later.];W[jj]
(;B[mg]C[woj:  Another dumb mistake.  I'm not sure why I didn't capture at O12.

*B*: Yes, this is the big mistake. O12 would have been much better.]
;W[pj];B[nh]TR[og][oh]C[*B*: This is not so good. W can afford to sacrifice the marked stones.]
;W[jh];B[oi];W[lg];B[mf];W[kg]CR[hh][ii]C[*B*: Unnecessary play by W, the marked plays would be better]
;B[ii]C[woj:  I'm certain that the previous sequence (101 - 111) lost the game for me.]
;W[id];B[ie];W[he];B[hf];W[gb];B[fb];W[qc];B[qd]C[woj:  S13 looked too far away to help me with this corner invasion, so I decided to push white to the left.]
;W[pc];B[oc];W[rd];B[re];W[rb]
(;B[sc]C[woj:  Mistake?  Is P16 better?

*B*: No, P16 would be useless, this is a correct move. See variation for another one.]
;W[sd];B[se];W[rc];B[qa];W[ra];B[sb]C[woj:  Had to prevent two eyes at T17 and T19, but I wasn't sure about R19.]

(;W[pa]C[woj:  I think this was a mistake for white.  Would Q18 allow white's group to live?

*B*: No, see variation.];B[pb];W[qb];B[ob];W[rp];B[rq];W[ro]
;B[sq];W[eq];B[er];W[dr];B[ep];W[dq];B[fr];W[gp]C[*B*: Now W is closing in for the kill. B has very few possibilities left and should, if ever, live very small.]
;B[fp];W[gn]LB[hr:A]C[*B*: Mistake by W, should steal the base around A]
;B[fn];W[gm];B[fl];W[hq];B[hr]C[woj:  At this point, I realized that my bottom left group was in trouble, so I had to make some eye space.

*B*: As I stated before, B has not many chances left.];W[ir]
;B[hs];W[is];B[gq];W[gs];B[gr];W[es]C[*B*: Unnecessary by W, B alreadyhas one eye]
;B[go];W[ho];B[hp];W[iq];B[hm];W[hn];B[im]
(;W[kq]C[woj:  It looks like white felt that his center bottom group was threatened.  Was this a good move for white?

*B*: W lost her connection to her main groups. A is a vital point for B and W, so playing there would eventually be better.]
;B[jp];W[jo];B[jn];W[gp];B[ko];W[kp];B[io];W[lq];B[jq]C[*B*: H4 would have been a possibility. W would have lived small at the bottom.]
;W[jo]
(;B[hp]C[woj:  Oops.  I think I could have killed white's entire bottom group if I had played K2 instead.

*B*: Well, H4 now was the wrong decision ;-)];W[jr];B[io];W[mp]
;B[lo];W[nq];B[no];W[mo];B[nn];W[nr];B[or];W[os];B[ps];W[ns]
;B[qr]C[woj:  Was this necessary?];W[mq];B[mn];W[on];B[ol];W[pl]

(;B[ri]CR[qh]C[woj:  It looked to me like I was way behind now, so I started trying to eke out a few points wherever I could.

*B*: Good idea. R12 would be another possibility.];W[rj];B[si]
;W[qh];B[rh];W[sj];B[oj];W[nj];B[oh];W[ml];B[ln];W[jm];B[jp]
;W[jq];B[jo];W[lr]C[woj:  Was this move necessary for white, or was his group unconditionally alive?

*B*: I can't see how to kill the W group, so I think the move was not necessary.]
;B[ma];W[la];B[lc];W[jb];B[na];W[jd];B[ge];W[gc];B[hd];W[ib]
;B[ga];W[ha];B[fa];W[fh];B[gh];W[eg];B[fi];W[eh];B[gi];W[ej]
;B[ei];W[di];B[ee];W[ig];B[gg];W[ef];B[de];W[ce];B[ff];W[ac]
;B[ab];W[ad];B[dc];W[cd];B[ec];W[cf];B[sp];W[so];B[qg];W[ds]
;B[fs];W[rr]
(;B[rs]C[woj:  I wasn't sure if I had to reply to this move, but I decided to play just in case.

*B*: If you do not reply, it will end in seki as you can see in the variation.]
;W[ih];B[hg];W[gd];B[he];W[kd];B[ld];W[en];B[em];W[do];B[dm]
;W[cm];B[cl]
(;W[bl]C[woj:  White thought a long time about this move.  I was expecting him to play at C9 instead.  Was this move better or worse?

*B*: C9 would have been much better.];B[ck];W[bm];B[dk];W[bk]
;B[cj];W[bi];B[ci];W[ch];B[bj];W[ek];B[el];W[aj];B[dl];W[bh]
;TW[ia][ja][ka][hb][kb][ic][jc][ae][be][af][bf][ag]
[bg][cg][dg][jg][ah][kh][lh][ai][kj][lj][mj][qj][ak][jk][qk]
[rk][sk][al][jl][ql][rl][sl][am][pm][qm][rm][sm][an][bn][cn]
[pn][qn][rn][sn][ao][bo][co][ap][bp][cp][aq][bq][cq][ar][br]
[cr][kr][mr][as][bs][cs][js][ks][ls][ms]TB[aa][ba][ca][da][ea]
[oa][pa][qa][ra][sa][eb][qb][rb][pc][qc][rc][nd][od][rd][sd]
[me][ne][pe][qe][gf][nf][pf][qf][rf][sf][og][sg][sh][gm][gn]
[hn][in][ho][gp][qq][pr][rr][sr][gs][qs][ss])
(;W[ck];B[bl];W[bm];B[bk];W[bj]
;B[aj];W[al];B[ak];W[ai]))
(;W[sr];B[qq];W[rs]))
(;B[qh];W[ri];B[rh];W[sh];B[sg]
;W[si]))
(;B[jr]
(;W[js];B[kr];W[lr];B[io];W[ks]
;B[jo];W[nr];B[or];W[mq];B[mp]
;W[ms];B[nq];W[hp])
(;W[kr];B[io];W[js];B[jo];W[nr]
;B[mq];W[mr];B[ls];W[or];B[pr]
;W[ps];B[qs];W[os];B[rr];W[ms]
;B[hp];W[ks];B[lr])))
(;W[jn];B[jm];W[ko];B[ln];W[kp]
;B[kq];W[jq];B[jo];W[io];B[lo]

(;W[kr]C[*B*: W lives];B[lr];W[lq];B[mq]
;W[ls]
(;B[mr];W[jp])
(;B[kq];W[jp];B[ms];W[ks]))
(;W[lq]C[*B*: W dies];B[lr];W[kr];B[mq]
;W[mr];B[kq];W[jp];B[ks];W[lq]
;B[ls];W[ms];B[kq];W[js];B[lq]
)))
(;W[pb];B[pa];W[oa];B[ob];W[qb]
;B[pa];W[qa];B[na];W[pa]))
(;B[sd];W[rc];B[sc];W[sb];B[pb]
;W[se];B[sf];W[sd];B[ra];W[qa]
;B[qb];W[sa];B[pa]))
(;B[nh];W[jh];B[ii];W[mg];B[ig]
;W[jg]C[*B*: W can't make two eyes]))
(;B[ki]
(;W[nh];B[mg]C[*B*: W is dead])
(;W[mg];B[me];W[jg];B[ig];W[jh]
;B[ji];W[ih];B[hh];W[ii];B[ij]
;W[hg];B[hf];W[gg];B[gh];W[gf]
;B[ge]C[*B*: W is dead])))
(;B[og];W[mg];B[le]))
(;B[cc];W[cd];B[bd];W[be];B[bc]
;W[dc];B[eb]))
(;B[id];W[ic];B[jd];W[hd];B[he]
;W[jc];B[kd];W[lc]LB[gd:A][me:B]C[*B*: After this sequence B normally plays A or B.
W got some territory on the upper side and the corner, B got influence towards the center.]
))
(;B[oq];W[nq];B[pq])
(;B[oo];W[no];B[po]))
(;B[cn];W[fp];B[gp];W[fo];B[cq]
;W[eq];B[cp]))
(;W[cn]C[*B*: Using a standard joseki for demonstration.]
;B[dr];W[cq];B[iq]LB[lq:B][oq:A]C[*B*: W still has the possibility of the shimari at A and enough space to settle her position at B. W has more room for maneuver, so I think the shimari in the upper left corner is slightly better.]
))
(;B[fc];W[cf]C[*B*: Using a standard joseki for demonstration.]
;B[db];W[cc];B[ic]LB[kc:B][nc:A]C[*B*: W still has the possibility of the shimari at A to attack the corner and settling her position with B.]
))
