Find the last point. (advanced)
Japanese rules; 0.5 points komi; no prisoners
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[13]KM[0.50]
GN[The Last Point]AW[lb][mb][jc][kc][ed][jd][ld][de][ee][je][af][bf][cf][ff][kf][lf][dg][eg][fg][hg][ig][jg][ah][bh][ch][dh][jh][ai][fi][ji][aj][fj][hj][ij][kj][gk][kk][fl][gl][hl][il][kl][em][gm]AB[la][ib][jb][kb][cc][ec][hc][lc][dd][fd][hd][ae][be][ce][ge][ie][gf][hf][if][jf][gg][eh][fh][gh][kh][bi][ci][di][gi][hi][ii][ki][bj][dj][gj][jj][ak][ek][fk][bl][dl][el][dm][hm]C[Black to win the game.]
(;B[ka]
;W[fm]C[RIGHT Black wins by 0.5 Points. Important: Black must not try to win the ko, because any of black's ko threats will give points away.])
(;B[ic]
;W[fm]C[RIGHT Black wins by 0.5 Points. Important: Black must not try to win the ko, because any of black's ko threats will give points away.])
(;B[kg]
;W[ka]
(;B[ja]
;W[ic]
;B[fm]
;W[hb]
;B[gb]
;W[em]
(;B[jk]
;W[jl]
;B[fm]
;W[cd]
;B[bd]
;W[em]
(;B[ih]
;W[ik]
;B[fm]
;W[db]
;B[dc]
;W[em]
(;B[jj]
;W[jk]
;B[fm]
;W[bk]
(;B[ck]
;W[em]
(;B[hh]
;W[jj]
;B[fm]
;W[al]
(;B[bk]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[am]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[al]
;W[em]
(;B[hh]
;W[jj]
;B[fm]
;W[ck]
;B[cl]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])))
(;B[hh]
;W[jj]
;B[fm]
;W[bk]
;B[ck]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[hh]C[NOTTHIS])
(;B[ik]
;W[hk]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[hk]
;W[ik]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[ik]
;W[jk]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[hk]
;W[jk]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[ih]
;W[jk]
;B[fm]
;W[cd]
;B[bd]
;W[em]
(;B[hh]
;W[jj]
;B[fm]
;W[db]
;B[dc]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[hh]C[NOTTHIS]))
(;B[ic]
;W[ma]
(;B[ja]
;W[mc]
(;B[la]
;W[fm]
;B[ka]C[You lost by 0.5 points.])
(;B[fm]
;W[la]
;B[em]C[You lost by 0.5 points.]))
(;B[fm]
;W[mc]
;B[ja]
;W[la]
;B[em]C[You lost by 0.5 points.])))
(;B[fm]
;W[ka]
;B[ja]
(;W[em]C[CHOICE]
(;B[ic]
;W[fm]C[RIGHT Black wins by 0.5 Points. Important: Black must not play a ko threat, because any of black's ko threats will give points away.])
(;B[kg]
;W[ic]
;B[fm]
;W[hb]
;B[gb]
;W[em]
(;B[jk]
;W[jl]
;B[fm]
;W[cd]
;B[bd]
;W[em]
(;B[ih]
;W[ik]
;B[fm]
;W[db]
;B[dc]
;W[em]
(;B[jj]
;W[jk]
;B[fm]
;W[bk]
(;B[ck]
;W[em]
(;B[hh]
;W[jj]
;B[fm]
;W[al]
(;B[bk]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[am]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[al]
;W[em]
(;B[hh]
;W[jj]
;B[fm]
;W[ck]
;B[cl]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])))
(;B[hh]
;W[jj]
;B[fm]
;W[bk]
;B[ck]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[hh]C[NOTTHIS])
(;B[ik]
;W[hk]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[hk]
;W[ik]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[ik]
;W[jk]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[hk]
;W[jk]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[ih]
;W[jk]
;B[fm]
;W[cd]
;B[bd]
;W[em]
(;B[hh]
;W[jj]
;B[fm]
;W[db]
;B[dc]
;W[em]
;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.])
(;B[mc]
;W[md]C[Black can't win anymore. Even if black wins the ko, he loses by 0.5 points.]))
(;B[hh]C[NOTTHIS]))
(;B[ik]
;W[jk]
;B[fm]
;W[ic]
;B[em]C[You won the ko, but you lost the game by 0.5 points.])
(;B[hk]
;W[jk]
;B[fm]
;W[ic]
;B[em]C[You won the ko, but you lost the game by 0.5 points.])
(;B[mc]
;W[md]
;B[fm]
;W[ic]
;B[em]C[You won the ko, but you lost the game by 0.5 points.])
(;B[jk]
;W[kg]
(;B[fm]
;W[ic]
;B[em]C[You won the ko, but you lost the game by 0.5 points.])
(;B[ic]
;W[fm]C[You lost by 0.5 points.])))
(;W[ic]
;B[em]C[RIGHT Black wins by 0.5 Points.])))