invalid problem set
Problem | 5800 |
Created | 2005-01-11 |
Source | |
Rating | |
Difficulty | 9.5 kyu |
Average Solve Time | 80 secs |
User Attempts |
1342 / 4230 |
Solve Ratio Rating | 4 kyu |
| rating history |
(;AB[ga]AB[hb]AB[jb]AB[kb]AB[kc]AB[jd]AB[id]AB[gd]AW[fa]AW[fb]AW[fc]AW[fd]AW[la]AW[lb]AW[lc]AW[ld]AW[kd]AW[ke]AW[je]AW[ie]AW[he]AW[ge]AW[fe]AP[goproblems]
(;W[gb];B[ic]
(;W[ha];B[ia]
(;W[ka];B[hc];W[ja];B[ga]C[ko, black takes first])
(;W[ga];B[hc])
(;W[hc];B[ga];W[ka];B[ja];W[ha]C[ko, white takes first]))
(;W[hd];B[ia])
(;W[hc];B[ha])
(;W[ia];B[ha])
(;W[ja];B[ka])
(;W[ka];B[ja];W[ha];B[ia];W[hc];B[ga]C[ko, black takes first]))
(;W[gc];B[ia])
(;W[hd];B[ic])
(;W[hc];B[ic])
(;W[ia];B[ic])
(;W[ib];B[ic])
(;W[ja];B[ic]
(;W[ka];B[ia];W[gb];B[hc];W[ha]C[ko, white takes first])
(;W[ia];B[ka])
(;W[gb];B[ka])
(;W[hc];B[ka]))
(;W[ka];B[ic]
(;W[ja];B[ia];W[gb];B[hc];W[ha]C[ko, white takes first])
(;W[ia];B[ja])
(;W[gb];B[ja]
(;W[ha];B[ia]
(;W[ga];B[hc])
(;W[hc];B[ga]C[ko, black takes first]))
(;W[ia];B[ha])
(;W[hc];B[ha]))
(;W[hc];B[gb]))
(;W[ic];B[hd]
(;W[gb];B[hc]
(;W[ha];B[ia]
(;W[ka]C[RIGHT])
(;W[ga];B[ka])
(;W[ib];B[ka];W[ja]C[ko, white takes first]))
(;W[ib];B[ka]
(;W[ha];B[ia]
(;W[ja]C[ko, white takes first])
(;W[ga];B[jc]))
(;W[ia]C[RIGHT]))
(;W[ia];B[ib]
(;W[ha]C[RIGHT])
(;W[ja];B[ka])
(;W[ka]C[RIGHT]))
(;W[ja];B[ka])
(;W[ka]C[RIGHT]))
(;W[gc];B[hc]
(;W[gb];B[ka]
(;W[ib];B[ia])
(;W[ha];B[ia])
(;W[ia];B[ib];W[ha]C[RIGHT]))
(;W[ib];B[ia]
(;W[gb];B[ka])
(;W[ka];B[gb]))
(;W[ia];B[ib]
(;W[gb];B[ha])
(;W[ha];B[gb])
(;W[ja];B[ka])
(;W[ka];B[ja]))
(;W[ja];B[ia]
(;W[ka];B[gb])
(;W[gb];B[ka])
(;W[ib];B[ka]))
(;W[ka];B[ia]
(;W[ja];B[gb])
(;W[gb]C[RIGHT])))
(;W[hc];B[gc]
(;W[gb];B[jc]
(;W[ka]C[RIGHT])
(;W[ib];B[ia]
(;W[ka];B[ic])
(;W[ic];B[ka])
(;W[ha];B[ka]))
(;W[ia];B[ib]
(;W[ha]C[RIGHT])
(;W[ja];B[ka])
(;W[ka]C[RIGHT]))
(;W[ja]C[RIGHT])
(;W[ha];B[ia]
(;W[ga];B[ka])
(;W[ib];B[hb]
(;W[ic];B[ka])
(;W[ga];B[ka])
(;W[ka];B[ic]
(;W[ga];B[ja])
(;W[ja];B[ga]C[ko, black takes first])))
(;W[ka]C[RIGHT])))
(;W[ib];B[ia]
(;W[ka];B[gb])
(;W[gb];B[jc]
(;W[ka];B[ic])
(;W[ic];B[ka])
(;W[ha];B[ka])))
(;W[ia];B[ib]
(;W[gb];B[jc]
(;W[ha]C[RIGHT])
(;W[ja];B[ka])
(;W[ka]C[RIGHT]))
(;W[ka];B[ja];W[gb]C[RIGHT])
(;W[ha];B[gb])
(;W[ja];B[ka]))
(;W[ja];B[ib]
(;W[gb];B[ha];W[ka]C[RIGHT])
(;W[ka];B[ia];W[gb]C[RIGHT])
(;W[ha];B[ia]
(;W[ka];B[gb])
(;W[gb];B[ka]))
(;W[ia];B[ka]))
(;W[ka];B[ja]
(;W[ib];B[ia];W[gb];B[jc]
(;W[ha];B[ic])
(;W[ic]C[RIGHT]))
(;W[ia];B[ib];W[gb]C[RIGHT])
(;W[gb]C[RIGHT]))
(;W[ha];B[gb])
(;W[jc];B[ib]))
(;W[jc];B[ib])
(;W[ha];B[gb])
(;W[ja];B[gb]
(;W[gc];B[hc]
(;W[ib];B[ia]
(;W[ha]C[ko, white takes first])
(;W[ka];B[jc]))
(;W[ia]C[RIGHT])
(;W[ka];B[ia]))
(;W[hc];B[gc]
(;W[ia];B[ka];W[ib]C[RIGHT])
(;W[ib];B[ia];W[ha]C[ko, white takes first])
(;W[ka];B[ia]))
(;W[ib];B[ia]
(;W[ka];B[jc]
(;W[gc];B[hc])
(;W[hc];B[gc])
(;W[ha]C[ko, white takes first]))
(;W[gc];B[hc]
(;W[ka];B[jc])
(;W[ha]C[ko, white takes first]))
(;W[hc];B[gc]
(;W[ha]C[ko, white takes first])
(;W[ka];B[jc]))
(;W[jc];B[hc])
(;W[ha]C[good ko for white, but still a ko.]))
(;W[ia]C[RIGHT])
(;W[ka];B[ia]
(;W[gc];B[hc])
(;W[hc];B[gc])
(;W[jc];B[ib])
(;W[ib];B[jc]
(;W[hc];B[gc])
(;W[gc];B[hc])
(;W[ha]C[ko, white takes first])))
(;W[jc];B[ia])
(;W[ha];B[ia]))
(;W[ib];B[ia]
(;W[gb];B[ka]
(;W[hc]C[RIGHT])
(;W[gc];B[hc])
(;W[ha];B[hc]
(;W[ga];B[jc])
(;W[ja]C[ko, white takes first])))
(;W[gc];B[hc]
(;W[ka];B[gb])
(;W[gb];B[ka]))
(;W[hc];B[gc]
(;W[gb];B[ka])
(;W[ka];B[gb]))
(;W[ja];B[ka])
(;W[ka];B[gb]
(;W[gc];B[hc])
(;W[hc];B[gc])
(;W[ja];B[jc]
(;W[hc];B[gc])
(;W[gc];B[hc])
(;W[ha]C[ko, white takes first]))))
(;W[ia];B[ib]
(;W[ka]C[RIGHT])
(;W[ja];B[ka])
(;W[ha];B[gb])
(;W[gb];B[gc]
(;W[ha]C[RIGHT])
(;W[ja];B[ka])
(;W[ka]C[RIGHT]))
(;W[gc];B[hc]
(;W[gb];B[ha])
(;W[ha];B[gb])
(;W[ja];B[ka])
(;W[ka];B[ja]))
(;W[hc];B[gc]
(;W[gb];B[jc]
(;W[ha]C[RIGHT])
(;W[ja];B[ka])
(;W[ka]C[RIGHT]))
(;W[ha];B[gb])
(;W[ja];B[ka])
(;W[ka];B[ja];W[gb]C[RIGHT])))
(;W[ka];B[gb]
(;W[ja];B[ia]
(;W[gc];B[hc])
(;W[hc];B[gc])
(;W[ib];B[jc];W[ha]C[ko, white takes first])
(;W[jc];B[ib]))
(;W[hc];B[gc]
(;W[ib];B[ia])
(;W[jc];B[ib])
(;W[ja];B[ia])
(;W[ia];B[ib];W[ja]C[RIGHT]))
(;W[gc];B[hc]
(;W[ib];B[ia])
(;W[ja];B[ia])
(;W[ia];B[ib];W[ja]C[RIGHT]))
(;W[ib];B[ia]
(;W[gc];B[hc])
(;W[hc];B[gc])
(;W[ja];B[jc]
(;W[ha]C[ko, white takes first])
(;W[hc];B[gc])
(;W[gc];B[hc])))
(;W[ia];B[ja]
(;W[ib]C[RIGHT])
(;W[gc]C[RIGHT])
(;W[hc]C[RIGHT])
(;W[jc];B[ib])
(;W[ha];B[ib]))
(;W[ha];B[ia])
(;W[jc];B[ib])))
(;W[jc];B[ic])
(;W[ha];B[ia]))
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