Problem | 301 |
Created | 2000-12-04 |
Source | game vs ykhasi |
Rating | |
Difficulty | 8.2 kyu |
Average Solve Time | 66 secs |
User Attempts |
1820 / 5896 |
Solve Ratio Rating | 4 kyu |
| rating history |
yeah, it's a full-board endgame problem. a pain to look at. but good practice! ;-)
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]
SZ[19]RU[Japanese]KM[5.50]TM[1800]
GN[White (W) vs. Black (B)]PB[Black]PW[White]DT[1999-07-28]SY[Cgoban 1.9.2]
;AW[da][ea][ma][pa][qa][sa][eb][gb][kb][lb][pb][rb][dc][fc][gc][mc][nc][oc][pc][dd][ed][gd][hd][jd][ee][fe][ie][af][bf][if][nf][of][pf][qf][rf][ag][jg][ng][bh][ch][eh][gh][ph][sh][ci][di][ei][fi][ki][pi][cj][fj][gj][hj][jj][oj][qj][rj][ck][hk][ik][jk][kk][lk][ok][pk][sk][al][gl][hl][sl][bm][fm][hm][jm][mm][nm][om][pm][qm][rm][sm][an][cn][dn][en][fn][gn][mn][nn][bo][do][no][cp][ep][gp][mp][op][pp][cq][fq][gq][hq][iq][jq][oq][pq][qq][rq][ar][br][cr][er][ir][jr][nr][rr][bs][ds][is]AB[ca][bb][db][hb][jb][qb][cc][ic][jc][kc][lc][qc][rc][cd][md][nd][od][pd][qd][be][de][ge][ke][re][cf][ef][ff][hf][jf][lf][sf][bg][cg][dg][eg][fg][hg][ig][og][pg][qg][rg][sg][ah][dh][fh][oh][ai][bi][gi][hi][ii][ji][ni][oi][bj][ij][kj][lj][mj][ak][bk][dk][ek][fk][gk][qk][rk][bl][cl][dl][fl][ll][ml][nl][ol][pl][ql][rl][cm][dm][em][lm][hn][in][kn][ln][eo][fo][go][io][jo][lo][mo][oo][bp][dp][hp][ip][jp][kp][np][rp][bq][dq][kq][mq][nq][dr][gr][hr][kr][or][pr][qr][js][ks][ps][rs]C[best endgame for white?
]PL[W]
(;W[mr]
;B[lq]
(;W[ms]LB[os:A]C[better ko by throwing in at A first
])
(;W[ns]
;B[lr])
(;W[os]
;B[ns]
;W[ms]C[RIGHT
best ko for the corner
]))
(;W[ns]
;B[mr])
(;W[ms]
;B[mr])
(;W[lq]
;B[mr]
;W[ms]
;B[ns])
(;W[fp]
;B[mr])
(;W[sr]
;B[mr])
(;W[nj]
;B[mr])
(;W[mi]
;B[mr])
(;W[kd]
;B[mr]
;W[ld]
;B[id]
(;W[he]
;B[je]
;W[gf]
;B[gg]C[saving at O2 biggest
])
(;W[je]
;B[he]
;W[kf]
;B[le]
;W[jf]
;B[kg]))
(;W[ld]
;B[mr]
;W[kd]
;B[id])
(;W[cb]
;B[mr])
(;W[sc]
;B[mr])
(;W[ja]
;B[mr])
(;W[am]
;B[mr])
(;W[kg]
;B[mr]C[nothing
])
(;W[kh]
;B[mr])
(;W[os]CR[os]
;B[ns]CR[ns]
;W[mr]CR[mr]
;B[lq]CR[lq]
;W[ms]CR[ms]C[RIGHT
ko]))
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