invalid problem set
Problem | 4726 |
Created | 2004-06-29 |
Source | loosely based on Tesuji encyclopedia |
Rating | |
Difficulty | 8 dan |
Average Solve Time | 62 secs |
User Attempts |
185 / 1953 |
Solve Ratio Rating | 3 dan |
| rating history |
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[13]KM[0.00]
AW[ba][da][ab][cb][bc][cc][cd][ce][de][ee][fe][ge][je][ke][cf][ef][gf][kf][cg][ig][jg][gh][hh][kh][di][ei][fi][gi][hi][cj][ej][hj][ij][ck][dk][ek][ik][jk][kk][cl][kl][cm][km]AB[ea][db][fb][ac][dc][ic][jc][bd][dd][ed][fd][gd][hd][jd][ae][be][he][ie][bf][df][ff][hf][if][jf][bg][dg][eg][fg][gg][hg][ch][dh][bi][ci][bj][gj][bk][fk][gk][hk][bl][dl][el][gl][il][jl][bm][dm][em][im][jm]C[Black to play and win!]PL[B]
(;B[ld]CR[ld]
;W[kd]CR[kd]
(;B[kc]CR[kc]
;W[le]CR[le]
(;B[lc]CR[lc]
;W[gm]CR[gm]
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[fl]CR[fl]
;B[hm]CR[hm]
;W[fm]CR[fm]
;B[el]CR[el]
;W[dm]CR[dm]
;B[em]CR[em]
;W[md]CR[md]
;B[mc]CR[mc]
;W[me]CR[me]
(;B[jm]CR[jm]
;W[jl]CR[jl]
(;B[im]CR[im]C[RIGHT
B+2, Well done!])
(;B[ad]CR[ad]
;W[ca]CR[ca]
;B[im]CR[im])
(;B[ca]CR[ca]C[NOTTHIS]))
(;B[im]CR[im]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][gm]C[RIGHT
B+2, Well done!])
(;B[ca]CR[ca]C[NOTTHIS])
(;B[jl]CR[jl]
;W[jm]CR[jm]
;B[im]CR[im]C[RIGHT]))
(;B[me]CR[me]
;W[hl]CR[hl]
;B[lf]CR[lf]
;W[kg]CR[kg]
(;B[lg]CR[lg]
;W[lh]CR[lh]
;B[mf]CR[mf]
;W[mh]CR[mh]TW[aa][bb][ih][jh][ii][ji][ki][li][mi][dj][fj][gj][jj][kj][lj][mj][fk][gk][hk][lk][mk][dl][el][fl][gl][il][jl][ll][ml][dm][em][fm][hm][im][jm][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][mc][id][af][ag][ah][bh][ai][aj][ak][al][am]C[W+19, ouch :-(])
(;B[mh]CR[mh]
;W[lh]CR[lh]
;B[mg]CR[mg]
;W[lj]CR[lj]
;B[mi]CR[mi]
;W[mj]CR[mj]
;B[li]CR[li]
;W[ki]CR[ki]
;B[md]CR[md]
;W[lg]CR[lg]
;B[mf]CR[mf]TW[aa][bb][ih][jh][ii][ji][dj][fj][gj][jj][kj][fk][gk][hk][lk][mk][dl][el][fl][gl][il][jl][ll][ml][dm][em][fm][hm][im][jm][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][mc][id][af][ag][ah][bh][ai][aj][ak][al][am]C[W+14, ouch :-(]))
(;B[lg]CR[lg])
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
;W[hl]CR[hl]
;B[fm]CR[fm]
;W[hm]CR[hm]
;B[il]CR[il]
;W[md]CR[md]
;B[mc]CR[mc]
;W[me]CR[me]
;B[dm]CR[dm]
;W[dl]CR[dl]
;B[im]CR[im]
;W[em]CR[em]
(;B[ca]CR[ca]
;W[ad]CR[ad]
;B[dm]CR[dm]
;W[ac]CR[ac]
;B[em]CR[em]C[RIGHT])
(;B[fl]CR[fl]
;W[dm]CR[dm]C[RIGHT])))
(;B[mc]CR[mc]
;W[gm]CR[gm]
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
(;W[im]CR[im]C[CHOICE]
;B[hm]CR[hm]
;W[lc]CR[lc]
;B[lb]CR[lb]
;W[hl]CR[hl]
;B[ca]CR[ca]C[RIGHT])
(;W[fl]CR[fl]
(;B[hm]CR[hm]
;W[fm]CR[fm]
;B[el]CR[el]
;W[me]CR[me]
;B[md]CR[md]
;W[dm]CR[dm]
;B[em]CR[em]
;W[jm]CR[jm]
;B[im]CR[im]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][lc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][gm]C[RIGHT
B+3, the best score])
(;B[fm]CR[fm]
;W[fl]CR[fl]
(;B[hm]CR[hm]
;W[el]CR[el])
(;B[el]CR[el]
;W[fj]CR[fj]))))
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
(;W[em]CR[em]C[CHOICE]
;B[fm]CR[fm]
;W[lc]CR[lc]
(;B[lb]CR[lb]
;W[fl]CR[fl]
;B[ca]CR[ca]C[RIGHT])
(;B[dm]CR[dm]
;W[lb]CR[lb]
;B[kb]CR[kb]
;W[la]CR[la]
;B[ka]CR[ka]
;W[dl]CR[dl]
;B[hm]CR[hm]
;W[em]CR[em]
;B[ca]CR[ca]
;W[ad]CR[ad]
;B[dm]CR[dm]
;W[ac]CR[ac]
;B[em]CR[em]C[W+10]))
(;W[hl]CR[hl]
;B[fm]CR[fm]
;W[hm]CR[hm]
;B[il]CR[il]
;W[me]CR[me]
;B[md]CR[md]
;W[jm]CR[jm]
;B[im]CR[im]
;W[dm]CR[dm]
(;B[em]CR[em]C[RIGHT])
(;B[ca]CR[ca]C[NOTTHIS]))))
(;B[md]CR[md]
;W[me]CR[me]
;B[lc]CR[lc]
;W[gm]CR[gm]
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[fl]CR[fl]
;B[hm]CR[hm]
;W[fm]CR[fm]
;B[el]CR[el]
;W[dm]CR[dm]
;B[em]CR[em]
;W[jm]CR[jm]
(;B[im]CR[im]C[RIGHT])
(;B[ca]CR[ca]C[NOTTHIS]))
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
;W[hl]CR[hl]
;B[fm]CR[fm]
;W[hm]CR[hm]
;B[il]CR[il]
;W[jm]CR[jm]
;B[im]CR[im]
;W[dm]CR[dm]
;B[em]CR[em]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][mc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][gm][hm]C[RIGHT
B+3]))
(;B[me]CR[me]
;W[lc]CR[lc]
;B[mc]CR[mc]
;W[gm]CR[gm]
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[im]CR[im]
;B[hm]CR[hm]
;W[md]CR[md]
;B[ca]CR[ca]C[Triple ko, no result])
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
;W[em]CR[em]
;B[fm]CR[fm]
;W[md]CR[md]
;B[ca]CR[ca]C[Triple ko, no result])))
(;B[lc]CR[lc]
;W[kc]CR[kc]
;B[kb]CR[kb]
;W[le]CR[le]
(;B[md]CR[md]
;W[me]CR[me]
;B[lb]CR[lb]
;W[gm]CR[gm]
;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[fl]CR[fl]
;B[hm]CR[hm]
;W[fm]CR[fm]
;B[el]CR[el]
;W[dm]CR[dm]
;B[em]CR[em]
;W[jm]CR[jm]
;B[im]CR[im]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][mb][ec][fc][gc][hc][mc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][gm]C[RIGHT
B+1, you just made it, though M11 cost you two points])
(;B[lb]CR[lb]
;W[md]CR[md]
;B[mc]CR[mc]
;W[gm]CR[gm]
;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[fl]CR[fl]
;B[hm]CR[hm]
;W[fm]CR[fm]
;B[el]CR[el]
;W[dm]CR[dm]
;B[em]CR[em]
;W[me]CR[me]
;B[jm]CR[jm]
;W[jl]CR[jl]
;B[im]CR[im]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][mb][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][gm]C[Jigo])))
(;B[gm]CR[gm]
;W[lc]CR[lc]
(;B[lb]CR[lb]
;W[kc]CR[kc]
;B[kb]CR[kb]
;W[mb]CR[mb]
;B[kd]CR[kd]
;W[ld]CR[ld]
;B[la]CR[la]
;W[le]CR[le]
;B[jb]CR[jb]
;W[mc]CR[mc]TW[aa][bb][md][me][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][eb][gb][hb][ib][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][hm]C[W+1, so close!])
(;B[kc]CR[kc]
;W[lb]CR[lb]C[Ouch])
(;B[ld]CR[ld]
;W[kd]CR[kd]
(;B[lb]CR[lb]
;W[kc]CR[kc]
;B[kb]CR[kb]
;W[mb]CR[mb]
;B[la]CR[la]
;W[mc]CR[mc]
;B[jb]CR[jb]TW[aa][bb][ld][md][le][me][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][eb][gb][hb][ib][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][hm]C[W+4])
(;B[kc]CR[kc]
;W[lb]CR[lb]))
(;B[ca]CR[ca]
;W[ad]CR[ad]C[This exchange does not help black]))
(;B[kd]CR[kd]
;W[gm]CR[gm]
(;B[le]CR[le]
;W[hl]CR[hl]
(;B[lf]CR[lf]
;W[kg]CR[kg]
;B[mi]CR[mi]
;W[li]CR[li]
;B[mh]CR[mh]
;W[mj]CR[mj]
;B[lg]CR[lg]
;W[lh]CR[lh]
;B[mg]CR[mg]
;W[lj]CR[lj]TW[aa][bb][ih][jh][ii][ji][ki][dj][fj][gj][jj][kj][fk][gk][hk][lk][mk][dl][el][fl][gl][il][jl][ll][ml][dm][em][fm][hm][im][jm][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][kc][lc][mc][id][ld][md][me][af][mf][ag][ah][bh][ai][aj][ak][al][am]C[W+9])
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[fl]CR[fl]
;B[hm]CR[hm]
;W[fm]CR[fm]
;B[el]CR[el]
;W[lf]CR[lf]
(;B[md]CR[md]
;W[mf]CR[mf]
;B[me]CR[me]
;W[dm]CR[dm]
;B[em]CR[em]
;W[jm]CR[jm]
;B[im]CR[im])
(;B[ld]CR[ld]
;W[me]CR[me]
;B[md]CR[md]
;W[mf]CR[mf]
(;B[dm]CR[dm]
;W[dl]CR[dl]
;B[em]CR[em]
;W[jm]CR[jm]
;B[im]CR[im]C[RIGHT])
(;B[jm]CR[jm]
;W[jl]CR[jl]
;B[em]CR[em]
;W[im]CR[im]
;B[fm]CR[fm]
;W[hl]CR[hl]
;B[ca]CR[ca]
;W[ad]CR[ad]
;B[il]CR[il]
;W[ac]CR[ac]
;B[jm]CR[jm]
;W[da]CR[da]
;B[im]CR[im]
;W[ca]CR[ca]TW[aa][bb][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][kc][lc][mc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][gm]C[B+6!]))))
(;B[hm]CR[hm]
;W[hl]CR[hl]
(;B[il]CR[il]
(;W[fl]CR[fl]
(;B[hm]CR[hm]
(;W[fm]CR[fm]
(;B[el]CR[el]
;W[ld]CR[ld]
;B[lc]CR[lc]
;W[le]CR[le]
(;B[md]CR[md]
;W[me]CR[me]
;B[mc]CR[mc]
;W[dm]CR[dm]
;B[em]CR[em]
;W[jm]CR[jm]
(;B[im]CR[im]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][kc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][gm]C[RIGHT
B+3, well done!])
(;B[ca]CR[ca]C[NOTTHIS]))
(;B[mc]CR[mc]
;W[jm]CR[jm]
;B[im]CR[im]
;W[dm]CR[dm]
;B[em]CR[em]
;W[md]CR[md]C[RIGHT
B+2, not bad but not as good as B+3]))
(;B[ca]CR[ca]C[NOTTHIS]))
(;W[ca]CR[ca]))
(;B[fm]CR[fm]
;W[fl]CR[fl]
(;B[el]CR[el]
;W[fj]CR[fj])
(;B[hm]CR[hm]
;W[el]CR[el]C[Oh, no!])))
(;W[im]CR[im]
;B[hm]CR[hm]
;W[ld]CR[ld]
(;B[lc]CR[lc]
;W[hl]CR[hl]
;B[ca]CR[ca]
;W[ad]CR[ad]C[RIGHT
White will get no compensation for this ko])
(;B[jm]CR[jm]
;W[lc]CR[lc]
;B[kb]CR[kb]
;W[lb]CR[lb]
;B[la]CR[la]
;W[kc]CR[kc]
;B[jb]CR[jb]
;W[mb]CR[mb]
;B[jl]CR[jl]
;W[ma]CR[ma]
;B[ka]CR[ka]TW[aa][bb][mc][md][le][me][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][eb][gb][hb][ib][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][gm][im]C[W+5])))
(;B[ca]CR[ca]C[NOTTHIS]))
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
(;W[hl]CR[hl]
(;B[fm]CR[fm]
;W[hm]CR[hm]
;B[il]CR[il]
;W[ld]CR[ld]
;B[lc]CR[lc]
;W[le]CR[le]
(;B[md]CR[md]
;W[me]CR[me]
;B[mc]CR[mc]
;W[jm]CR[jm]
;B[im]CR[im]
;W[dm]CR[dm]
;B[em]CR[em]TW[aa][bb][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][kc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][gm][hm]C[RIGHT
B+3, well done!])
(;B[mc]CR[mc]
;W[jm]CR[jm]
;B[im]CR[im]
;W[dm]CR[dm]
;B[em]CR[em]
;W[md]CR[md]TW[aa][bb][me][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][kc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][gm][hm]C[RIGHT
B+2, not bad -- but B+3 is possible]))
(;B[hm]CR[hm]
;W[hl]CR[hl]
(;B[fm]CR[fm]
;W[il]CR[il]C[Oh, no!]
;B[hm]CR[hm]
;W[dm]CR[dm]
;B[em]CR[em]
;W[im]CR[im])
(;B[il]CR[il]
;W[fj]CR[fj])))
(;W[em]CR[em]
;B[fm]CR[fm]
;W[ld]CR[ld]
;B[lc]CR[lc]
;W[fl]CR[fl]
(;B[ca]CR[ca]
;W[ad]CR[ad]
;B[fm]CR[fm]C[RIGHT
White will get no compensation for the ko])
(;B[le]CR[le]
;W[dl]CR[dl]
;B[lf]CR[lf]
;W[kg]CR[kg]
;B[mi]CR[mi]
;W[li]CR[li]
;B[mh]CR[mh]
;W[mj]CR[mj]
;B[lg]CR[lg]
;W[lh]CR[lh]
;B[mg]CR[mg]
;W[lj]CR[lj]TW[aa][bb][ih][jh][ii][ji][ki][dj][fj][gj][jj][kj][fk][gk][hk][lk][mk][el][gl][hl][il][jl][ll][ml][dm][fm][hm][im][jm][lm][mm]TB[fa][ga][ha][ia][ja][ka][la][ma][eb][gb][hb][ib][jb][kb][lb][mb][ec][fc][gc][hc][kc][mc][id][ld][md][me][af][mf][ag][ah][bh][ai][aj][ak][al][am]C[W+9])))
(;B[hl]CR[hl]
;W[fl]CR[fl])
(;B[fl]CR[fl]
;W[hl]CR[hl])
(;B[ca]CR[ca]C[NOTTHIS]))
(;B[ca]CR[ca]
;W[ad]CR[ad]C[This does not change anything])
(;B[ad]CR[ad]
;W[ca]CR[ca]
(;B[gm]CR[gm]
;W[lc]CR[lc]
(;B[lb]CR[lb]
;W[kc]CR[kc]
;B[kb]CR[kb]
;W[mb]CR[mb]
;B[kd]CR[kd]
;W[ld]CR[ld]
;B[la]CR[la]
;W[le]CR[le]
;B[jb]CR[jb]
;W[mc]CR[mc]TW[aa][bb][md][me][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][ka][eb][gb][hb][ib][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][hm]C[W+1, so close!])
(;B[kd]CR[kd]
;W[ld]CR[ld]
;B[kb]CR[kb]
;W[lb]CR[lb]
;B[la]CR[la]
;W[kc]CR[kc]
;B[jb]CR[jb]
;W[mb]CR[mb]
;B[ka]CR[ka]TW[aa][bb][mc][md][le][me][lf][mf][kg][lg][mg][ih][jh][lh][mh][ii][ji][ki][li][mi][dj][jj][kj][lj][mj][lk][mk][ll][ml][lm][mm]TB[fa][ga][ha][ia][ja][eb][gb][hb][ib][ec][fc][gc][hc][id][af][ag][ah][bh][ai][aj][ak][al][fl][hl][am][fm][hm]C[W+4]))
(;B[kd]CR[kd]
;W[gm]CR[gm]
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[im]CR[im]C[White will get some compensation from this ko, which is enough to win.])
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
;W[em]CR[em]C[White will get some compensation from this ko, which is enough to win.]))
(;B[ld]CR[ld]
;W[kd]CR[kd]
;B[kc]CR[kc]
;W[le]CR[le]
;B[mc]CR[mc]
;W[gm]CR[gm]
(;B[hm]CR[hm]
;W[hl]CR[hl]
;B[il]CR[il]
;W[im]CR[im]C[White will get some compensation for the ko, which is enough to win])
(;B[fm]CR[fm]
;W[fl]CR[fl]
;B[el]CR[el]
;W[em]CR[em]C[White will get some compensation for the ko, which is enough to win]))))
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