DragonTourney2005/Game Commentaries

Sub-page of DragonTourney2005

DragonTourney2005/GameCommentaries:

[ext] Bildstein-Malweth:

(;GM![1]FF![4]SZ![19]AP![SmartGo:1.5]ST[0] )

(;GM[1]FF[4]SZ[19]AP[SmartGo:1.5]ST[0] GN[Bildstein-malweth-20050831.sgf] PW[Ben Bildstein (Bildstein)]WR[1 kyu] PB[Tarah Tamayo (malweth)]BR[7 kyu] DT[2005-07-14,2005-08-31] PC[Dragon Go Server\: http\://www.dragongoserver.net]OT[30 days with 1 day extra per move] KM[6.5] RU[Japanese] GC[Game ID\: 136008] ;B[pd];W[dp];B[pp];W[dc];B[de];W[fd];B[cc];W[cb];B[cd];W[bb];B[dg]MA[ci] LB[ch:B][di:C] C[B11 at X or B is normal and better (no open skirt of the black position; cf later move W30)

Perhaps Black was confused with the Chinese high fuseki, where there is a white stone is at C. Then B11 at d13 is a valid option (because B and X would not work).] ;W[nc];B[pf];W[pb] C[W14\: in combination with move W16 this is aji-keshi

Ususally better in the K10 area (to preserve the san-san aji). However, here we see the difficulty of finding the right extension from the white left (as a 3-ken is too wide) and a J16 would be too wide from the right.

Perhaps W14-J17 has a good balance.] ;B[lc];W[ne] C[W16\: if white wanted to play here, she'd better not had exchanged W14 first (see later comment)] ;B[qc];W[kd];B[kc];W[jd];B[ld];W[le];B[jc];W[id];B[hc];W[hd];B[gc];W[fc] C[white has now many cutting points (e.g. C) (and protects none)

Retroactively it becomes clear that the X-marked stone was aji keshi, as white has lost the option for playing at 3-3 , once Black cut at C.] MA[pb]LB[me:C];B[cn];W[ci];B[ck] C[B31 induces W32, induces B33 induces W34 , which weakens the black top group, induces B35 ... and trouble.

The cause lies in B11 with its open skirt]

W[ei];B[fg];W[gd];B[md]LB[me
C]

(;W[nd] C[W36\: better to connect at C, creating a wall without a flaw, attacking the black D13 group.] LB[me:C];B[me]LB[mf:B] C[W38\: still better to block at B, accept the loss, make an outside wall, attack the left group] (;W[nf];B[lf];W[ke];B[mf];W[ng] C[horrible\:

White's wall is broken, White has a weak group, and is pushing Black for making territory on the right.] ;B[ph];W[ni];B[pj];W[mb];B[mh];W[nh];B[kh];W[ek] C[W50\: good, stylish move];B[cp];W[cq];B[bq];W[dq];B[bo];W[do];B[em];W[co] ;B[bp];W[gh];B[ch];W[bh];B[bg];W[dh];B[cg];W[eg];B[ef];W[eh];B[gf];W[hp] ;B[kp];W[nk];B[lk];W[qb];B[mj];W[qn];B[ql];W[qq];B[pq];W[qp];B[po];W[rn] ;B[om];W[qe];B[pe];W[rc] (;B[qd];W[rd];B[re];W[qg];B[pg];W[nj];B[gm];W[cj];B[fq];W[fp];B[hr] C[B97 could be costly] (;W[gq];B[gr];W[fr];B[iq];W[pn];B[on];W[pr];B[or];W[qr];B[qf];W[bk];B[io] ;W[ml];B[ln];W[sk];B[rk];W[sl];B[sj];W[rm];B[rl];W[sm];B[qj];W[os];B[nr] ;W[dn];B[cm];W[dm];B[cr];W[dr];B[br];W[cl];B[bi];W[bj];B[ah];W[bm];B[sd] ;W[sb];B[qo];W[ro];B[bc];W[fb];B[ic];W[bn];B[ao];W[hn];B[hl];W[ns];B[ms] ;W[ps];B[mr];W[mn];B[lm];W[mm];B[mo];W[ip];B[jq];W[im];B[il];W[jo];B[fn] ;W[go];B[hi];W[ii];B[ij];W[ji];B[hh];W[jg];B[kg];W[ig];B[jm];W[mi];B[li] ;W[kj];B[lj];W[ll];B[kk];W[jn];B[kl];W[ko];B[lo];W[gi];B[gj]) (;W[iq])) (;B[rd];W[qd];B[re] (;W[pc];B[qf]) (;W[qg];B[qf];W[pg];B[qh]))) (;W[mf];B[nf];W[lf] (;B[ng] C[if B41 here, White gets semeai chances

];W[mb];B[lb];W[qb] (;B[rb];W[pc];B[qd] (;W[ob]LB[na:m][od:n][ic:p] C[m and n are somewhat miai and Black has a problem at p];B[na];W[ma];B[od] ;W[ic];B[ib];W[jb];B[ja];W[ka];B[kb];W[la];B[gb];W[mc];B[jb];W[ha]) (;W[oa];B[qa];W[ma];B[od];W[oc];B[nb];W[ic];B[ib];W[jb];B[kb];W[ka];B[ja] ;W[la];B[gb];W[mc];B[jb];W[ha])) (;B[pc];W[ob];B[na];W[rc];B[rd];W[sc];B[ra];W[rb];B[sa];W[oa];B[qa];W[ma] ) (;B[rc];W[rb];B[sb];W[pc] (;B[qe];W[oa]) (;B[ob];W[oa];B[na];W[pa];B[nb];W[oc];B[ra];W[qd];B[rd];W[qe];B[re];W[qf] ;B[pe];W[qg]))) (;B[mb] C[if here or at S]LB[qb:S];W[of];B[ng];W[og] C[white might employ this ladder aji later for an escape.];B[nh];W[pe];B[qe] ;W[oe]))) (;W[me];B[nd];W[];B[] (;W[qb];B[rb] (;W[od];B[oe];W[oc];B[mb];W[qd];B[rc];W[pc];B[pe];W[rd];B[re];W[nb];B[fb] ;W[eb];B[gb];W[oa];B[qa];W[ra];B[sa];W[pa];B[qe];W[ra]) (;W[ic];B[ib];W[jb];B[hb];W[pc];B[qd];W[od];B[oe];W[oc];B[mb];W[nb];B[kb] )) (;W[oe];B[od];W[pe];B[qe];W[gh])))


Phelan: Transcribed moves using [ext] SGF2Diagram up to move 130, and copied commentary from the SGF above. Did not add the variations and the symbols, though.

[Diagram]
Moves 1 to 10  
[Diagram]
Moves 11 to 20  

B11 at X or B is normal and better (no open skirt of the black position; cf later move W30)

Perhaps Black was confused with the Chinese high fuseki, where there is a white stone is at C. Then B11 at d13 is a valid option (because B and X would not work).

W14: in combination with move W16 this is aji-keshi

Ususally better in the K10 area (to preserve the san-san aji). However, here we see the difficulty of finding the right extension from the white left (as a 3-ken is too wide) and a J16 would be too wide from the right.

Perhaps W14-J17 has a good balance.

W16: if white wanted to play here, she'd better not had exchanged W14 first (see later comment)

[Diagram]
Moves 21 to 30  

W28:white has now many cutting points (e.g. C) (and protects none)

Retroactively it becomes clear that the X-marked stone was aji keshi, as white has lost the option for playing at 3-3 , once Black cut at C.

[Diagram]
Moves 31 to 40  

B31 induces W32, induces B33 induces W34 , which weakens the black top group, induces B35 ... and trouble.

The cause lies in B11 with its open skirt

W36: better to connect at C, creating a wall without a flaw, attacking the black D13 group.

(Insert variation here at N15)

W38: still better to block at B, accept the loss, make an outside wall, attack the left group (Insert variation here at N14)

[Diagram]
Moves 41 to 50  

W42:horrible:

White's wall is broken, White has a weak group, and is pushing Black for making territory on the right.

W50: good, stylish move

[Diagram]
Moves 51 to 60  
[Diagram]
Moves 61 to 70  
[Diagram]
Moves 71 to 80  
[Diagram]
Moves 81 to 90  

(insert variation here at S16)

[Diagram]
Moves 91 to 100  

B97 could be costly (insert variation here at J3)

[Diagram]
Moves 101 to 110  
[Diagram]
Moves 111 to 120  
[Diagram]
Moves 121 to 130  

DragonTourney2005/Game Commentaries last edited by malweth on October 16, 2014 - 16:09
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