$$Bc W to play $$ | . . . . . . . . . . . . . $$ | . . . . . X . . . . . . . $$ | . . . O . . . X X X X X . $$ | . . . O X X X O O O O X . $$ | O O O . X O O . . . X O . $$ | X X O O X O X O O X . O . $$ | . X X X O O X X X X O . . $$ | O O . X . O X . X O O . . $$ | . X O . . . . . . . . . . $$ +---------------------------
[go]$$Bc W to play $$ | . . . . . . . . . . . . . $$ | . . . . . X . . . . . . . $$ | . . . O . . . X X X X X . $$ | . . . O X X X O O O O X . $$ | O O O . X O O . . . X O . $$ | X X O O X O X O O X . O . $$ | . X X X O O X X X X O . . $$ | O O . X . O X . X O O . . $$ | . X O . . . . . . . . . . $$ +---------------------------[/go]
This is a simplified problem from a game I just played. I won the race and the game from here, but in post game analysis this position has a lot of different possibilities. Lots of clever moves and counter moves. Almost every move that white might think to make leads to interesting possibilities. I'm honestly not sure of what the optimal play would be here.
This is the game it's from, for the curious.
[sgf-full](;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[6.50]TM[1500]OT[5x30 byo-yomi] PW[Stormyt]PB[Numsgil]WR[4k]BR[4k]DT[2011-05-25]PC[The KGS Go Server at http://www.gokgs.com/]C[Numsgil [4k\]: hi .......... (Post game note: This does not represent me playing very well. Lots of very basic mistakes in how I handled the situation when it went south. I also knew I was making stupid mistakes as I made them, but I was playing stubbornly and decided to throw good stones after bad for the sheer Hell of it. ) ]RE[B+Resign] ;B[pd]BL[1499.051]C[Stormyt [4k\]: hi ] ;W[dp]WL[1493.242] ;B[pq]BL[1496.92] ;W[dc]WL[1491.205] ;B[qo]BL[1495.299] ;W[nc]WL[1487.305] ;B[gp]BL[1488.577] ;W[pf]WL[1483.394] ;B[oe]BL[1486.145] ;W[pi]WL[1478.154] ;B[of]BL[1475.929] ;W[pg]WL[1469.834] ;B[lc]BL[1469.523] ;W[ql]WL[1465.454] ;B[pc]BL[1464.917] ;W[dn]WL[1461.346] ;B[jp]BL[1456.092] ;W[ck]WL[1457.561] ;B[cf]BL[1448.674] ;W[fq]WL[1454.38] ;B[gq]BL[1446.699] ;W[fr]WL[1451.681] ;B[cq]BL[1442.958] ;W[cp]WL[1448.333] ;B[dr]BL[1440.851] ;W[br]WL[1445.106] ;B[bp]BL[1432.332] ;W[bo]WL[1442.678] ;B[bq]BL[1431.367] ;W[ar]WL[1432.178] ;B[ap]BL[1414.09] ;W[ao]WL[1428.911] ;B[dq]BL[1407.428] ;W[eq]WL[1424.019] ;B[bs]BL[1397.758] ;W[cs]WL[1408.841] ;B[ep]BL[1357.762] ;W[fp]WL[1406.196] ;B[eo]BL[1356.634] ;W[fo]WL[1403.939] ;B[en]BL[1355.077] ;W[dm]WL[1400.703] ;B[fn]BL[1351.333] ;W[go]WL[1398.358] ;B[iq]BL[1342.912] ;W[hn]WL[1393.908] ;B[fl]BL[1340.676] ;W[ch]WL[1388.55] ;B[cc]BL[1336.845] ;W[cd]WL[1385.861] ;B[dd]BL[1336.159] ;W[de]WL[1383.362] ;B[ed]BL[1334.918] ;W[bc]WL[1380.651] ;B[cb]BL[1333.905] ;W[ce]WL[1378.775] ;B[bb]BL[1329.303] ;W[ee]WL[1376.521] ;B[fd]BL[1327.953] ;W[fj]WL[1373.166] ;B[hm]BL[1314.098] ;W[in]WL[1369.885] ;B[hk]BL[1310.253] ;W[jl]WL[1366.986] ;B[gn]BL[1307.006] ;W[hp]WL[1363.719] ;B[hq]BL[1302.865] ;W[fk]WL[1359.282] ;B[fe]BL[1297.539] ;W[eg]WL[1354.495] ;B[im]BL[1282.726] ;W[jn]WL[1351.027] ;B[jm]BL[1281.87] ;W[kn]WL[1348.153] ;B[kl]BL[1280.496] ;W[lp]WL[1345.325] ;B[ko]BL[1275.614] ;W[lo]WL[1342.524] ;B[ln]BL[1274.464] ;W[kq]WL[1333.227] ;B[km]BL[1256.727] ;W[ip]WL[1329.803] ;B[jq]BL[1255.083] ;W[jr]WL[1320.382] ;B[ir]BL[1240.954] ;W[kr]WL[1307.214] ;B[gr]BL[1228.495] ;W[fs]WL[1302.621] ;B[io]BL[1189.313] ;W[ho]WL[1300.811] ;B[jo]BL[1187.907] ;W[hs]WL[1288.496] ;B[is]BL[1180.229] ;W[gs]WL[1285.748] ;B[es]BL[1176.052]C[Numsgil [4k\]: gg ])[/sgf-full]
Re: Fun capture race problem from a game
Posted: Wed May 25, 2011 7:16 am
by Dusk Eagle
I only had a couple of minutes available to look, but here's what I see right now:
$$Wc W to play $$ | . . . . . . . . . . . . . $$ | . . . . . X . . . . . . . $$ | . . . O . . . X X X X X . $$ | . . . O X X X O O O O X . $$ | O O O . X O O 6 4 . X O . $$ | X X O O X O X O O X . O . $$ | 7 X X X O O X X X X O . . $$ | O O 1 X 5 O X . X O O . . $$ | . X O 2 3 . . . . . . . . $$ +---------------------------
[go]$$Wc W to play $$ | . . . . . . . . . . . . . $$ | . . . . . X . . . . . . . $$ | . . . O . . . X X X X X . $$ | . . . O X X X O O O O X . $$ | O O O . X O O 6 4 . X O . $$ | X X O O X O X O O X . O . $$ | 7 X X X O O X X X X O . . $$ | O O 1 X 5 O X . X O O . . $$ | . X O 2 3 . . . . . . . . $$ +---------------------------[/go]
Re: Fun capture race problem from a game
Posted: Wed May 25, 2011 7:37 am
by Horibe
For DuskEagle
Your 4 at 6 is better
Re: Fun capture race problem from a game
Posted: Wed May 25, 2011 9:12 am
by Dusk Eagle
Why? I had thought about it, but I concluded it didn't make a difference.
$$Wc at $$ | . . . . . . . . . . . . . $$ | . . . . . X . . . . . . . $$ | . . . O . . . X X X X X . $$ | . . . O X X X O O O O X . $$ | O O O . X O O 4 5 6 X O . $$ | X X O O X O X O O X . O . $$ | 9 X X X O O X X X X O . . $$ | O O 1 X 7 O X . X O O . . $$ | . X O 2 3 . . . . . . . . $$ +---------------------------
[go]$$Wc at $$ | . . . . . . . . . . . . . $$ | . . . . . X . . . . . . . $$ | . . . O . . . X X X X X . $$ | . . . O X X X O O O O X . $$ | O O O . X O O 4 5 6 X O . $$ | X X O O X O X O O X . O . $$ | 9 X X X O O X X X X O . . $$ | O O 1 X 7 O X . X O O . . $$ | . X O 2 3 . . . . . . . . $$ +---------------------------[/go]
I had thought about it, but I concluded it didn't make a difference.
at 