a few posts ago I spoke of those tournaments that you remember with satisfaction, not by how well they played or the many games you won but by a specific move that deserves to be remembered for itself. In this tournament she passed me something, and, again, against the same opponent. After losing to Oscar, the pairings took me to face with Cesar ...
The departure you can ver comentada un poco más abajo, pero me gustaría centrarme en un momento en concreto. Esencialmente la partida empezó con un error de Cesar que me dio la ventaja, seguido por otro mio algo después que igualó el tema. Pasados unos compases, yo volvía a llevar ventaja cuando me dejé cortar un grupo en el centro que tenía ciertos problemas para vivir. Esta es la posición después de un poco de lucha:
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]AW[eb][fb][gb][hb][ob][ec][gc][kc][oc][pc][bd][cd][dd][pd][ae][ce][de][ke][pe][cf][ef][ag][bg][cg][gg][mg][ng][og][fh][gh][hh][ih][mh][oh][gi][ji][li][pi][hj][jj][lj][mj][bk][ek][jk][kk][mk][nk][bl][cl][gl][hl][il][jl][ll][ml][ql][rl][im][mm][pm][rm][dn][en][fn][in][nn][on][pn][bo][jo][lo][qo][cp][ep][fp][gp][jp][kp][qp][hq][iq][pq][qq][qr]AB[pb][qb][bc][cc][dc][fc][hc][nc][qc][ad][ed][gd][qd][ee][fe][ge][df][gf][qf][dg][fg][hg][ig][kg][qg][bh][ch][dh][jh][kh][lh][nh][ei][fi][ii][ki][mi][ni][oi][kj][oj][ck][fk][gk][ok][pk][qk][rk][dl][fl][kl][nl][ol][pl][fm][gm][hm][km][lm][nm][om][qm][hn][jn][kn][ln][mn][do][ho][io][mo][dp][hp][pp][bq][dq][eq][fq][gq][kq][lq][nq][oq][jr][pr]LB[ph:B][ri:A])
Yo (blanco) me dispongo a iniciar un semeai contra el cúmulo de piedras negras jugando en A. La vida de mi grupo en el centro depende de ello. Negro dispone de dos opciones ante esa jugada, cortar en B o iniciar el semeai. El corte lleva a un ko de dimensiones monstruosas, mientras que iniciar el semeai da este resultado:
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]AW[eb][fb][gb][hb][ob][ec][gc][kc][oc][pc][bd][cd][dd][pd][ae][ce][de][ke][pe][cf][ef][ag][bg][cg][gg][mg][ng][og][fh][gh][hh][ih][mh][oh][gi][hi][ji][li][pi][ri][hj][ij][jj][lj][mj][rj][bk][ek][jk][kk][lk][mk][nk][sk][bl][cl][gl][hl][il][jl][ll][ml][ql][rl][im][mm][pm][rm][dn][en][fn][in][nn][on][pn][bo][jo][lo][qo][cp][ep][fp][gp][jp][kp][qp][hq][iq][pq][qq][qr]AB[pb][qb][bc][cc][dc][fc][hc][nc][qc][ad][ed][gd][qd][ee][fe][ge][df][gf][qf][dg][fg][hg][ig][kg][qg][bh][ch][dh][eh][jh][kh][lh][nh][ei][fi][ki][mi][ni][oi][gj][kj][nj][oj][ck][fk][gk][hk][ik][ok][pk][qk][rk][dl][fl][kl][nl][ol][pl][fm][gm][hm][jm][km][lm][nm][om][qm][hn][jn][kn][ln][mn][do][ho][io][mo][dp][hp][pp][bq][dq][eq][fq][gq][kq][lq][nq][oq][jr][pr]LB[eh:6][hi:7][ii:A][ri:1][gj:4][ij:3][nj:10][rj:5][hk:2][ik:8][lk:11][sk:9][jm:12])
Parece entonces que blanco va a tener que inventarse algo para ganar el semeai y forzar a negro a jugar el ko. ¿se os ha ocurrido que hacer? Esta es mi solución:
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]AW[eb][fb][gb][hb][ob][ec][gc][kc][oc][pc][bd][cd][dd][pd][ae][ce][de][ke][pe][cf][ef][ag][bg][cg][gg][mg][ng][og][fh][gh][hh][ih][mh][oh][gi][ji][li][pi][hj][jj][lj][mj][bk][ek][jk][kk][mk][nk][bl][cl][gl][hl][il][jl][ll][ml][ql][rl][im][mm][pm][rm][dn][en][fn][in][nn][on][pn][bo][jo][oo][qo][cp][ep][fp][gp][jp][kp][mp][np][qp][hq][iq][pq][qq][qr]AB[pb][qb][bc][cc][dc][fc][hc][nc][qc][ad][ed][gd][qd][ee][fe][ge][df][gf][qf][dg][fg][hg][ig][kg][qg][bh][ch][dh][jh][kh][lh][nh][ei][fi][ii][ki][mi][ni][oi][kj][oj][ck][fk][gk][ok][pk][qk][rk][dl][fl][kl][nl][ol][pl][fm][gm][hm][km][lm][nm][om][qm][hn][jn][kn][ln][mn][do][ho][io][ko][mo][no][dp][hp][lp][pp][bq][dq][eq][fq][gq][kq][lq][nq][oq][jr][pr]LB[jm:A][ko:6][no:2][oo:5][lp:4][mp:1][np:3])
Thus, White wins a freedom in the (black man can not give atari at A previously unconnected).
If you want to see how it came out at the end (and the beginning too), here are heading includes, commented:
(; GM [1] FF [4] CA [UTF-8] AP [CGoban: 3 ] ST [2]
RU [Japanese] SZ [19] KM [0.00] PW
[pau] PB [end]
; B [dp]
; W [pd]
; B [dc]
; W [pq ]
; B [nc]
; W [de]
; B [dh]
; W [ec]
, B [ed] C [Start a joseki very complicated.]
; W [dd]
; B [ fc]
; W [eb]
; B [cc]
; W [fb] C [to Here are forced movements.]
; B [ee]
; W [ef]
; B [gd]
; W [gc]
; B [df] C [Black is trying to attract a joseki white avalanche , but black is ahead of a full line. White can not accept.]
; W [cf]
; B [dg]
; W [bd]
; B [bc]
; W [cd]
; B [bf]
; W [bg] C [ invites white to black if you play a ko C13, but white has three local threats and then F16 G15 and even G14, while black has none.]
; B [be]
; W [ae]
; B [f]
; W [cg]
; B [ad]
; W [ce]
; B [ch] C [Black can not connect the three stones because White escapes with C11.]
; W [ag]
; B [bh]
; W [ae]
; B [ge]
; W [fd]
; B [fe] C [El resultado is very favorable White, despite the strength of black.]
; W [jp]
; B [GQ]
; W [kc]
; B [hc]
; W [hb]
; B [fc]
; W [gb]
; B [qc]
; W [pc]
; B [QD]
; W [pe]
; B [bp]
; W [ob]
; B [QB]
; W [oc ]
; B [QF]
; W [og]
; B [QG]
; W [q]
; B [jr]
; W [good]
; B [Bq] C [Gamble aggressive. Black White duramente plane attack.]
; W [dn]
; B [Mon]
, W [fn]
; B [fl]
; W [ep]
; B [eq]
; W [cp]
; B [dq]
; W [fp]
; B [do]
; W [en]
; B [fq]
; W [cl]
; B [ck]
; W [bl] C [White is stabilized on the side and has exit. Keep attacking no sense.]
; B [qm]
; W [ke] C [Movement very calm. White is going to secure the victory.]
; B [ho]
; W [bk]
; B [nq]
; W [iq]
; B [kq]
; W [gp] C [Overplay. White must escape first with K6 or L4 before cutting.]
; B [hp]
; W [hq]
; B [jn] C [Very good point. White is in trouble.]
; W [kp]
; B [lq]
; W [in]
; B [io]
; W [jo]
; B [hn]
; W [im]
; B [hm]
; W [il]
; B [kn]
; W [hl]
; B [gm]
; W [it]
; B [kl]
; W [ek]
; B [fk]
; W [hj]
; B [ fi]
; W [jj]
; B [pp] C [White must choose between his corner or the stones on the lower side. One of them will probably die.]
; W [qp]
; B [pr]
; W [qr]
, B [q]
; W [qq]
; B [mn] C [White is captured and black entered the game again. White has to take advantage of the aji of his stone dead if you want to win.]
; W [pm]
; B [pl]
; W [ql]
; B [qk]
; W [rl]
; B [om]
; W [pn]
; B [rk]
; W [ol]
; B [pk]
; W [rm]
; B [nm] C [Good trade for white, present. If your group does not suffer from the center, he should win.]
; W [li]
; B [nh]
; W [oh]
, B [I]
; W [mj]
; B [oi]
, W [mh]
; B [or]
; W [ng] C [This sequence is overplay white. You can not fight having to worry about the stones in the center.]
; B [lh]
; W [mg]
; B [ki]
; W [lj]
; B [kj] C [The target position is critical.]
; W [kh]
; B [jh]
; W [kk]
; B [kg]
; W [ji]
; B [kh]
; W [ll] C [Overplay. Black on K9's game over.]
; B [lm]
; W [jl]
; B [km]
; W [ih]
; B [ig]
; W [hh]
; B [hg]
; W [gh]
; B [fg]
; W [gg]
; B [gf]
; W [fh]
; B [ei]
; W [gl]
; B [fm]
; W [gi]
; B [gk] C [White can not live, lacking K9.]
; W [ml]
; B [nl]
; W [mm]
; B [lk]
; W [ mk] C [Blanco has all the time with K9 as the meaning of life.]
; B [ln]
; W [nn]
; B [mo]
; W [nk]
; B [ok]
; W [on]
; B [ol]
; W [pi]
; B [oj]
; W [jk]
, B [ii]
; W [mp] C [Movement winner. White needed to win the extra freedom semeai.]
; B [no]
; W [np]
; B [lp]
; W [oo]
; B [ko] C [Blanco wins the freedom you need present.]
; W [ri]
; B [hk]
; W [ij]
; B [gj]
; W [rj]
; B [eh]
; W [hi]
; B [sk ]
; W [qj]
; B [ph] C [The court is somewhat late. The result is also ko, played before giving more options to black.]
, W [pj]
; B [rh]
; W [sj]
; B [qi]
; W [qh] C [Black can not win this ko.]
; B [bf] C [This threat starts another ko. Trying to kill the white group the bottom left side is better. For example C6.]
; W [pg]
; B [c] C [Error. Black should play to start a ko A12.]
, W [h] C [White and black escapes dies. The game ends.])
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