Problem 3062 goproblems.com


Author	highflyer	Created	2003-10-08
Difficulty	2 kyu (history)	Source	my own problem
AVG solve time	51 sec	Stars	2.95 (19 votes)
User attempts	2078 / 6090	Collections	Instruction Required
Genre	endgame	Your attempts	N/A
Similar problems
Created	2003-10-08
Source	my own problem
Stars	2.95 (19 votes)
Collections	Instruction Required
Your attempts	N/A

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[13]KM[0.50] GN[The Last Point]AW[fa][ha][ia][ja][fb][hb][fc][hc][kc][ed][gd][hd][de][ee][ge][me][ff][gf][if][jf][lf][kg][lg][mg][gh][jh][lh][ci][gi][ji][li][cj][dj][ej][gj][hj][ij][lj][ck][fk][jk][kk][bl][dl][fl][bm]AB[ea][ka][eb][ib][jb][kb][cc][ec][ic][dd][id][jd][ld][md][ce][he][ke][le][df][ef][hf][kf][bg][fg][gg][hg][ig][jg][ch][dh][eh][ih][mh][bi][ei][fi][ii][bj][fj][jj][bk][gk][hk][ik][al][cl]C[Black to win the game. Can you win the ko?]PL[B] (;B[fd] ;W[fe] (;B[mf] ;W[dc] ;B[db] ;W[me] (;B[ki] ;W[kj] ;B[mf] ;W[bd] ;B[cd] ;W[me] ;B[cm] ;W[dm]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]) (;B[kh]C[NOTTHIS]) (;B[cm] ;W[dm] ;B[mf] ;W[bd] ;B[cd] ;W[me] (;B[ki] ;W[kj]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]) (;B[kh]C[NOTTHIS])) (;B[ak] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[di] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[fh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hi] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[dm] ;W[mf]LB[jj:D][kj:C][cm:A][em:B]C[RIGHT Black wins by 0.5 Points. White has to capture at A, B and C as well as to connect at D. Black must not force white to capture any of these stones by ko threat.])) (;B[ak] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[di] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[fh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hi] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[dm] ;W[mf]LB[jj:D][kj:C][cm:A][em:B]C[RIGHT Black wins by 0.5 Points. White has to capture at A, B and C as well as to connect at D. Black must not force white to capture any of these stones by ko threat.])) (;B[fe]C[NOTTHIS]) (;B[mf] ;W[dc] ;B[db] ;W[me] (;B[fd] ;W[fe] (;B[mf] ;W[bd] (;B[cd] ;W[me] (;B[ki] ;W[kj] ;B[mf] ;W[ak] (;B[me] ;W[am] ;B[aj] ;W[cm] ;B[al] ;W[jj] ;B[ak]C[You lose by 0.5 points.]) (;B[aj] ;W[me] ;B[cm] ;W[dm]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])) (;B[kh]C[NOTTHIS]) (;B[cm] ;W[dm] ;B[mf] ;W[ak] (;B[me] ;W[am] ;B[aj] ;W[al]C[You lose by 1.5 points.]) (;B[aj] ;W[me] (;B[ki] ;W[kj]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]) (;B[kh]C[NOTTHIS]))) (;B[ak] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[di] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[fh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hi] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[dm] ;W[mf]LB[jj:D][kj:C][cm:A][em:B]C[RIGHT Black wins by 0.5 Points. White has to capture at A, B and C as well as to connect at D. Black must not force white to capture any of these stones by ko threat.])) (;B[bc]C[NOTTHIS]) (;B[be]C[NOTTHIS]) (;B[ad]C[NOTTHIS])) (;B[ak] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[di] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[fh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hi] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[dm] ;W[mf]LB[jj:D][kj:C][cm:A][em:B]C[RIGHT Black wins by 0.5 Points. White has to capture at A, B and C as well as to connect at D. Black must not force white to capture any of these stones by ko threat.])) (;B[fe]C[NOTTHIS]) (;B[ki] ;W[kj] ;B[mf] ;W[bd] ;B[cd] ;W[me] (;B[fd] ;W[fe] ;B[mf] ;W[ak] (;B[me] ;W[am] ;B[aj] ;W[cm] ;B[al] ;W[jj] ;B[ak]C[You lose by 0.5 points.]) (;B[aj] ;W[me] ;B[cm] ;W[dm]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])) (;B[fe]C[NOTTHIS]) (;B[cm] ;W[dm]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])) (;B[kh]C[NOTTHIS]) (;B[cm] ;W[dm] ;B[mf] ;W[bd] ;B[cd] ;W[me] (;B[fd] ;W[fe] ;B[mf] ;W[ak] (;B[me] ;W[am] ;B[aj] ;W[al]C[You lose by 1.5 points.]) (;B[aj] ;W[me] (;B[ki] ;W[kj]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]) (;B[kh]C[NOTTHIS]))) (;B[fe]C[NOTTHIS]) (;B[ki] ;W[kj]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]) (;B[kh]C[NOTTHIS])) (;B[ak] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[di] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[fh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hi] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[dm] ;W[mf]LB[jj:D][kj:C][cm:A][em:B]C[RIGHT Black wins by 0.5 Points. White has to capture at A, B and C as well as to connect at D. Black must not force white to capture any of these stones by ko threat.])) (;B[ak] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]PL[B]) (;B[di] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[fh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hh] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[hi] ;W[mf]LB[jj:C][kj:B][cm:A]C[RIGHT Black wins by 0.5 Points. White has to capture at A and B as well as to connect at C. Black must not force white to capture any of these stones by ko threat.]) (;B[dm] ;W[mf]LB[jj:D][kj:C][cm:A][em:B]C[RIGHT Black wins by 0.5 Points. White has to capture at A, B and C as well as to connect at D. Black must not force white to capture any of these stones by ko threat.]))