Life In 19x19 :: Play with GNUgo 3.8

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.00]
PW[GNU Go]PB[Black]DT[2012-02-04]
;B[pc]
;W[pp]
;B[cd]
;W[dp]
;B[qe]
;W[jc]
;B[fc]
;W[mc]
;B[cm]
;W[em]
;B[dk]
;W[eo]
;B[jp]
;W[hq]
;B[mp]
;W[pn]
;B[oq]TR[qm][co][eq]SQ[id]C[The armpit hit is usually bad (that is, playing a lone stone like immediately diagonally below an opponent's stone)

Examples of other armpit hits that black could play right now are marked. They are all bad.

Note that this is different than a shoulder hit like J16, which is diagonally *above* the opponent's stones, and which can be good for reducing and building influence.]
;W[pq]
;B[qk]
;W[cn]
(;B[bm]C[See variation.]
;W[bn]
;B[fk]
;W[hd]
;B[ge]C[Nice, builds the upper left framework.]
;W[if]
;B[gg]
;W[ng]
;B[nd]SQ[nd]C[This was a mistake...perhaps something like Q13 would have performed better. My intention was to prepare an invasion in the white territory.]
(;W[jr]LB[ph:B][jr:A]
;B[hp]C[Pushing down white group..]
;W[gp]
;B[ho]C[Good. Following a jump-attach, extending is usually a good shape.]
;W[ih]
;B[rm]
;W[ro]
;B[ph]
;W[gh]
;B[fh]
;W[hg]
;B[gi]
;W[gb]
;B[fb]
;W[pg]
;B[qg]
;W[pf]
;B[oe]TR[pe][qf][qh]C[The big mistake of the match...probably i did lost here...I have underestimated white invasion in R14...

Right. You have left three different gaps or cutting points, which white's stones are already next to, perfectly ready to cut. Having so many weak spots all in the same area should trigger a major alarm in your head.]
;W[qf]
;B[rf]
;W[rg]
;B[rh]
;W[qh]
;B[sg]
;W[ri]
;B[qg]
;W[qi]
;B[pi]
;W[oh]
;B[pj]
;W[rg]
;B[or]
;W[re]
;B[qg]
;W[qd]
;B[pe]
;W[se]
;B[nf]
;W[rg]
;B[ir]
;W[iq]
;B[qg]
;W[og]
;B[rd]
;W[rc]
;B[si]
;W[rj]
;B[rk]
;W[rg]
;B[hr]
;W[gr]
;B[qg]
;W[sj]
;B[sk]C[I tried to live in double ko...but no way of success...]
;W[sh]
;B[fr]
;W[fq]
;B[si]
;W[rg]
;B[jq]
;W[hs]
;B[qg]
;W[sh]
;B[kr]
;W[mg]
;B[rs]
;W[op]
;B[np]
;W[is]
;B[pr]
;W[ij]
;B[pd]
;W[qc]
;B[nc]
;W[mb]
;B[nb]C[Now I have two groups in troubles...]
;W[le]
;B[qb]
;W[sd]
;B[rb]
;W[gd]
(;B[fd]LB[fd:A][fe:B]C[See comment on variation.]
;W[gf]
;B[ff]
;W[fg]
;B[eg]
;W[gg]
;B[eh]
;W[ks]
;B[ls]
;W[am]
;B[al]
;W[an]
;B[bk]
;W[lr]
;B[js]
;W[rg]
;B[ir]
;W[lj]
;B[nk]
;W[gc]
(;B[pm]C[Now I must save the other group. The basic strategy is to connect it with the lower center group...

Right. But this is not a good way to do that. See variation.]
;W[rq]
;B[qr]
;W[ll]
;B[on]
;W[qn]
;B[mm]
;W[im]
(;B[jn]C[See variation.]
;W[jm]
;B[km]
;W[kl]
;B[lm]
;W[fa]
;B[ea]
;W[ga]
;B[db]
;W[he]
;B[fe]
;W[oo]
;B[nn]
;W[qq]C[White lived. What a shame.]
;B[gm]
;W[el]
;B[ek]
;W[md]
;B[sb]
;W[sc]
;B[mi]
;W[li]
;B[mh]
;W[lh]
;B[ni]
;W[hi]
;B[gj]
;W[rn]
;B[qm]
;W[mf]
;B[ne]C[What was this move for?]
;W[dm]
;B[cl]TR[dl]C[One point better at D8.]
;W[rr]
;B[qs]C[What was this move for?]
;W[hl]
;B[hk]
;W[ik]
;B[gl]
;W[hm]
;B[gn]C[What was this move for?]
;W[oi]
;B[oj]
;W[no]
;B[mo]
;W[ml]
;B[nl]
;W[mj]
;B[nj]
;W[fo]
;B[ma]
;W[la]
;B[na]
;W[sm]
;B[sl]
;W[sn]
;B[mk]
;W[lk]
;B[me]
;W[lb]
;B[hj]
;W[in]
;B[io]
;W[fn]
;B[jr]
;W[hr]
;B[sr]
;W[sq]
;B[ss]
;W[go]
;B[hn]
;W[dl]
;B[fl]
;W[fm]
;B[ip]
;W[qj]
;B[nh]
;W[of]C[Considering komi I'm u nder of 7.5 points...])
(;B[oo]C[Kill!]
;W[po]
;B[qp]
;W[qq]
;B[rr]
;W[rn]
;B[sn]
;W[so]
;B[sq]C[(Exercise: One or more of black's moves in that sequence were actually not needed. White would still die if black played elsewhere instead. Which ones were they?)]))
(;B[nm]LB[nk:A][np:B]C[If you want to connect, play a move that tries to connect!]))
(;B[fe]LB[fd:A][fe:B]
;W[fd]
;B[ed]
;W[gf]
;B[ff]
;W[fg]
;B[eg]C[With F15 this continuation was a littke better?

Locally, this variation has some problems too. See continuation.]
;W[ec]
(;B[dc]
;W[ee]
;B[eb]
;W[ef]TR[fe][ge][ff]C[Ko. (Although, the situation on the right makes this a little interesting).])
(;B[ee]
;W[dc]TR[fb][fc]C[Dead.])))
(;B[ph]LB[ph:B][jr:A]C[Instead of H4...]))
(;B[bn]C[Basic instinct: If you can't be cut, bend.]
;W[bm]
;B[bl]C[Black can't be cut.]))

Author:	4ngel0 [ Sat Feb 04, 2012 8:39 am ]
Post subject:	Play with GNUgo 3.8
Hi to everybody. After a long stop I began playing go again. Here a match that I played against GNUgo 3.8 (level 10). Comments criticisms are very welcome. Thank you very much! (;GM[1]FF[4]AP[glGo:1.4]ST[1] SZ[19]KM[6.0] PW[GNU Go]PB[Black]DT[2012-02-04] ;B[pc] ;W[pp] ;B[cd] ;W[dp] ;B[qe] ;W[jc] ;B[fc] ;W[mc] ;B[cm] ;W[em] ;B[dk] ;W[eo] ;B[jp] ;W[hq] ;B[mp] ;W[pn] ;B[oq] ;W[pq] ;B[qk] ;W[cn] ;B[bm] ;W[bn] ;B[fk] ;W[hd] ;B[ge] ;W[if] ;B[gg] ;W[ng] ;B[nd]SQ[nd]C[This was a mistake...perhaps something like Q13 would have performed better. My intention was to prepare an invasion in the white territory.] (;W[jr] ;B[hp]C[Pushing down white group..] ;W[gp] ;B[ho] ;W[ih] ;B[rm] ;W[ro] ;B[ph] ;W[gh] ;B[fh] ;W[hg] ;B[gi] ;W[gb] ;B[fb] ;W[pg] ;B[qg] ;W[pf] ;B[oe]C[The big mistake of the match...probably i did lost here...I have underestimated white invasion in R14...] ;W[qf] ;B[rf] ;W[rg] ;B[rh] ;W[qh] ;B[sg] ;W[ri] ;B[qg] ;W[qi] ;B[pi] ;W[oh] ;B[pj] ;W[rg] ;B[or] ;W[re] ;B[qg] ;W[qd] ;B[pe] ;W[se] ;B[nf] ;W[rg] ;B[ir] ;W[iq] ;B[qg] ;W[og] ;B[rd] ;W[rc] ;B[si] ;W[rj] ;B[rk] ;W[rg] ;B[hr] ;W[gr] ;B[qg] ;W[sj] ;B[sk]C[I tried to live in double ko...but no way of success...] ;W[sh] ;B[fr] ;W[fq] ;B[si] ;W[rg] ;B[jq] ;W[hs] ;B[qg] ;W[sh] ;B[kr] ;W[mg] ;B[rs] ;W[op] ;B[np] ;W[is] ;B[pr] ;W[ij] ;B[pd] ;W[qc] ;B[nc] ;W[mb] ;B[nb]C[Now I have two groups in troubles...] ;W[le] ;B[qb] ;W[sd] ;B[rb] ;W[gd] (;B[fd] ;W[gf] ;B[ff] ;W[fg] ;B[eg] ;W[gg] ;B[eh] ;W[ks] ;B[ls] ;W[am] ;B[al] ;W[an] ;B[bk] ;W[lr] ;B[js] ;W[rg] ;B[ir] ;W[lj] ;B[nk] ;W[gc] ;B[pm]C[Now I must save the other group. The basic strategy is to connect it with the lower center group...] ;W[rq] ;B[qr] ;W[ll] ;B[on] ;W[qn] ;B[mm] ;W[im] ;B[jn] ;W[jm] ;B[km] ;W[kl] ;B[lm] ;W[fa] ;B[ea] ;W[ga] ;B[db] ;W[he] ;B[fe] ;W[oo] ;B[nn] ;W[qq] ;B[gm] ;W[el] ;B[ek] ;W[md] ;B[sb] ;W[sc] ;B[mi] ;W[li] ;B[mh] ;W[lh] ;B[ni] ;W[hi] ;B[gj] ;W[rn] ;B[qm] ;W[mf] ;B[ne] ;W[dm] ;B[cl] ;W[rr] ;B[qs] ;W[hl] ;B[hk] ;W[ik] ;B[gl] ;W[hm] ;B[gn] ;W[oi] ;B[oj] ;W[no] ;B[mo] ;W[ml] ;B[nl] ;W[mj] ;B[nj] ;W[fo] ;B[ma] ;W[la] ;B[na] ;W[sm] ;B[sl] ;W[sn] ;B[mk] ;W[lk] ;B[me] ;W[lb] ;B[hj] ;W[in] ;B[io] ;W[fn] ;B[jr] ;W[hr] ;B[sr] ;W[sq] ;B[ss] ;W[go] ;B[hn] ;W[dl] ;B[fl] ;W[fm] ;B[ip] ;W[qj] ;B[nh] ;W[of]C[Considering komi I'm u nder of 7.5 points...]) (;B[fe] ;W[fd] ;B[ed] ;W[gf] ;B[ff] ;W[fg] ;B[eg]C[With F15 this continuation was a littke better?])) (;B[ph]C[Instead of H4...]))

Author:	4ngel0 [ Sat Feb 04, 2012 8:49 am ]
Post subject:	Re: Play with GNUgo 3.8
I forgot to say that GNUgo was running on my MacBook 2nd generation, with 2GB RAM and Intel Core 2 duo 2.0 GHz...According to your experience, which is the level of GNUgo running on this system?

Author:	shyin [ Sat Feb 04, 2012 3:23 pm ]
Post subject:	Re: Play with GNUgo 3.8
Just a thought, but at C3 looks tempting to me. Of course there's still K2 for white afterwards, but I think that group is fairly stable. I might be wrong though, of course.

Author:	Joaz Banbeck [ Sat Feb 04, 2012 5:29 pm ]
Post subject:	Re: Play with GNUgo 3.8
17: You have the 3-3 invasion any time. But with P3, you force him to take the corner. And P3 does not really make you much stronger: He can clamp at O3.

Author:	Celebrir [ Sun Feb 05, 2012 11:52 am ]
Post subject:	Re: Play with GNUgo 3.8
21: A hane like B6 is normally better in such situations because it puts more pressure on the oponnent to response and gets you a better shape.

Life In 19x19 http://www.lifein19x19.com/

Play with GNUgo 3.8 http://www.lifein19x19.com/viewtopic.php?f=4&t=5452	Page 1 of 1

Author:	4ngel0 [ Sat Feb 18, 2012 1:09 am ]
Post subject:	Re: Play with GNUgo 3.8
Thank you very much for your useful comments, and sorry for the delay of my reply.

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