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life and death
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Problem | 15484 |
Created | 2011-12-17 |
Source | Cho chikun's encyclopedia of life and death advanced |
Rating | |
Difficulty | 6.1 kyu |
Average Solve Time | 62 secs |
User Attempts |
474 / 1490 |
Solve Ratio Rating | 4 kyu |
| rating history |
(;AB[db]AB[dc]AB[dd]AB[ee]AB[fe]AW[eb]AW[ec]AW[ed]AW[fd]AW[gd]AW[hd]AW[hc]AW[hb]AW[ib]AB[ge]AB[he]AB[id]AB[ic]AB[jb]AB[kc]AP[goproblems]
(;B[de]C[NOTTHIS])
(;B[ie]C[NOTTHIS])
(;B[ia]
(;W[fb]C[CHOICE]
(;B[ea];W[fa]
(;B[gc]
(;W[ha]C[CHOICE];B[gb]C[RIGHT])
(;W[gb]C[CHOICE];B[ha]C[RIGHT]))
(;B[ha];W[ga]
(;B[gc];W[ja]
(;B[ia]C[RIGHT])
(;B[ka];W[ia]))
(;B[ja];W[gc])))
(;B[ha];W[ga]LB[gc:A]LB[ea:B]C[A and B miai])
(;B[gc];W[ea]
(;B[ha];W[ga])
(;B[gb];W[ga])
(;B[ga];W[ha];B[gb]C[Seki isn't enough])
(;B[fa];W[ga])
(;B[fc];W[ga])
(;B[ja]C[NOTTHIS]))
(;B[ja]C[NOTTHIS])
(;B[gb];W[ga]LB[ea:A]LB[gc:B]C[A and B miai])
(;B[ga];W[ha]
(;B[gb];W[gc];B[ea];W[fa])
(;B[gc];W[gb]
(;B[fa];W[ea])
(;B[ea];W[fa]))
(;B[fa];W[ea]
(;B[gc];W[gb])
(;B[gb];W[gc]))
(;B[ea];W[fa]
(;B[gc];W[gb])
(;B[gb];W[gc])))
(;B[fa];W[ga]LB[ea:A]LB[gc:B]C[A and B miai])
(;B[fc]C[NOTTHIS]))
(;W[gb]C[CHOICE]
(;B[ha]
(;W[ga]C[CHOICE]
(;B[fc];W[fb];B[ea];W[ja];B[ia]C[RIGHT])
(;B[ea];W[fa]
(;B[fc]C[RIGHT])
(;B[da];W[fc])
(;B[ja];W[fc])))
(;W[fa]C[CHOICE];B[fc]C[RIGHT]))
(;B[fc];W[ha]
(;B[fa];W[ea];B[fb]C[Seki is not enough])
(;B[fb];W[fa])
(;B[ea];W[fa]))
(;B[ga];W[fa]C[Alive, black cannot connect]TR[ha])
(;B[ea];W[fa]LB[fc:A]LB[ha:B]C[A and B miai])
(;B[fa];W[ea]
(;B[ga];W[fb]C[Black cannot connect])
(;B[ha];W[ga])
(;B[fb];W[fc])
(;B[fc];W[fb])
(;B[ja]C[NOTTHIS]))
(;B[fb];W[fa]LB[fc:A]LB[ha:B]C[A and B miai])
(;B[da]C[NOTTHIS])
(;B[gc]C[NOTTHIS])))
(;B[ea];W[fb]
(;B[ga];W[fa]
(;B[ia];W[ha]
(;B[gc];W[gb])
(;B[gb];W[gc]))
(;B[gb];W[gc]
(;B[ia];W[ha])
(;B[ha];W[ia]))
(;B[gc];W[gb])
(;B[ha];W[gb];B[ia];W[ja];B[ia];W[ha]))
(;B[fa];W[ga]LB[ia:A]LB[gc:B]C[A and B miai])
(;B[gb];W[ga]LB[gc:A]LB[ia:B]C[A and B miai])
(;B[gc];W[ia]
(;B[ga];W[fa];B[gb]C[Seki: not enough])
(;B[gb];W[ga])
(;B[fa];W[ga]))
(;B[ia];W[fa]
(;B[gc]
(;W[ha]C[CHOICE];B[gb]C[RIGHT])
(;W[gb]C[CHOICE];B[ha]C[RIGHT]))
(;B[ha];W[ga]
(;B[gc];W[ja]
(;B[ia]C[RIGHT])
(;B[ka];W[ia]))
(;B[ja];W[gc]))))
(;B[gb];W[fb]
(;B[ga];W[gc]
(;B[da];W[ea]
(;B[ja];W[ia])
(;B[ia];W[ha]))
(;B[ea];W[fa]
(;B[ia];W[ha])
(;B[ha];W[ia]))
(;B[ia];W[ha];B[ea];W[fa])
(;B[fa];W[ea];B[ia];W[ha])
(;B[ha];W[ia]
(;B[ea];W[fa])
(;B[fa];W[ea])))
(;B[gc];W[ga]LB[ea:A]LB[ia:B]C[A and B miai])
(;B[ea];W[ga]LB[gc:A]LB[ia:B]C[A and B miai])
(;B[ia];W[ga]LB[ea:A]LB[gc:B]C[A and B miai])
(;B[fc];W[gc])
(;B[fa];W[ea]
(;B[gc];W[ga])
(;B[ha];W[ia]
(;B[ga];W[gc])
(;B[gc];W[ga]))
(;B[ga];W[gc];B[ia];W[ha])
(;B[ia];W[ha]
(;B[ga];W[gc])
(;B[gc];W[ga])))
(;B[ha];W[ia]
(;B[fa];W[ea]
(;B[ga];W[gc])
(;B[gc];W[ga]))
(;B[ga];W[gc]
(;B[ea];W[fa])
(;B[fa];W[ea]))
(;B[gc];W[fa])
(;B[ea];W[ga])))
(;B[fb];W[gb]
(;B[fa];W[fc]
(;B[ga];W[ea]
(;B[ia];W[ha])
(;B[ha];W[ia]))
(;B[ea];W[ga]
(;B[ia];W[da]
(;B[ea];W[fa])
(;B[fa];W[ea]))
(;B[da];W[ia]))
(;B[ia];W[ea])
(;B[ha];W[ea]
(;B[ia];W[ga])
(;B[ga];W[ia]))
(;B[da];W[ea]
(;B[ga];W[ha])
(;B[ha];W[ga])
(;B[ia];W[ha])))
(;B[ea];W[fc]
(;B[fa];W[ga]
(;B[ia];W[da]
(;B[ea];W[fa])
(;B[fa];W[ea]))
(;B[da];W[ia]))
(;B[ga];W[ha];B[fa];W[da])
(;B[ia];W[ga];B[fa];W[da]
(;B[ea];W[fa])
(;B[fa];W[ea]))
(;B[ha];W[ga]))
(;B[fc];W[fa]
(;B[ia];W[ha])
(;B[ha];W[ia])
(;B[ga];W[ha]))
(;B[ga];W[ea]
(;B[ja];W[ia]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[ia];W[ha]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[ha];W[fa]
(;B[fc];W[ia])
(;B[ia];W[ja]LB[ga:1]LB[fc:2]LB[fb:2]LB[gc:2]C[Alive]))
(;B[fc];W[fa])
(;B[fa];W[fc]
(;B[ia];W[ha])
(;B[ha];W[ia])))
(;B[ia];W[fa]LB[fc:A]LB[ha:B]C[A and B miai])
(;B[da];W[fa]
(;B[ea];W[fc])
(;B[ia];W[ha])
(;B[fc];W[ia])
(;B[ga];W[ha]))
(;B[ha];W[ia]
(;B[ga];W[ea]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[fa];W[ea]
(;B[fc];W[ga])
(;B[ga];W[fc]))
(;B[ea];W[ga]
(;B[fa];W[fc])
(;B[fc];W[fa]))
(;B[fc];W[fa])))
(;B[fc]C[NOTTHIS])
(;B[gc]C[NOTTHIS])
(;B[fa];W[ea]
(;B[ia];W[fb]
(;B[gb];W[ha]
(;B[ga])
(;B[gc];W[ga]))
(;B[ga];W[gb])
(;B[ha];W[gb]
(;B[ja];W[ga])
(;B[ga];W[ja]))
(;B[gc];W[ga])
(;B[fc]C[NOTTHIS]))
(;B[gb];W[fb]
(;B[gc];W[ga])
(;B[ha];W[ia]
(;B[ga];W[gc])
(;B[gc];W[ga]))
(;B[ga];W[gc])
(;B[ia];W[ha]
(;B[ga])
(;B[gc];W[ga])))
(;B[fb];W[gb]
(;B[fc];W[ia]
(;B[ga];W[ha]
(;B[da];W[gc])
(;B[ja];W[gc]))
(;B[gc];W[ga]))
(;B[ia];W[fc])
(;B[ha];W[fc]
(;B[ia];W[ga])
(;B[ga]))
(;B[ga];W[fc])
(;B[da];W[fc]
(;B[ga];W[ha])
(;B[ha];W[ga])
(;B[ia];W[ha]))))
(;B[ga];W[ea]
(;B[ia];W[gb]
(;B[ha];W[fa]LB[fc:A]LB[ja:B]C[A and B miai for life])
(;B[fb];W[ha]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[fa];W[fb]C[Black cannot connect])
(;B[fc];W[fa]TR[ha]C[If black connects white captures and lives])
(;B[gc]C[NOTTHIS];W[ha]
(;B[fa];W[fb])
(;B[fb];W[fc])
(;B[fc];W[fb])))
(;B[fb];W[gb]
(;B[ja];W[ia]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[ia];W[ha]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[ha];W[fa]
(;B[fc];W[ia])
(;B[ia];W[ja]LB[ga:1]LB[fc:2]LB[fb:2]LB[gc:2]C[Alive]))
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[ha];W[gb]
(;B[fb];W[fa]
(;B[fc];W[ia])
(;B[ia];W[ja]LB[ga:1]LB[fc:2]LB[fb:2]LB[gc:2]C[Alive]))
(;B[fa];W[fb])
(;B[ia];W[fa]LB[fc:A]LB[ja:B]C[A and B miai for life])
(;B[fc];W[fa]
(;B[ia];W[ja])
(;B[da];W[ia])))
(;B[gb];W[fb]
(;B[gc];W[ia]C[seki])
(;B[ha];W[ia]
(;B[gc];W[fc])
(;B[fa];W[gc]))
(;B[fa];W[gc])
(;B[ia];W[ha]
(;B[fa];W[gc])
(;B[gc]))
(;B[ja];W[gc]
(;B[ia];W[ha])
(;B[ha];W[ia])))
(;B[fa];W[gb]
(;B[ia];W[fb]C[Black cannot connect])
(;B[fb];W[fc])
(;B[ha];W[fb])
(;B[fc];W[fb]
(;B[ia];W[ha])
(;B[ha];W[ia]))
(;B[gc]C[NOTTHIS];W[fb])
(;B[ja];W[fb]
(;B[ia];W[ha])
(;B[ha];W[ia])))
(;B[ja];W[gb]
(;B[ia];W[fa]LB[fc:A]LB[ha:B]C[A and B miai for life])
(;B[ha];W[ia]
(;B[fb];W[fc])
(;B[fa];W[fb])
(;B[fc];W[fb]))
(;B[fb];W[ia]
(;B[fc];W[fa])
(;B[fa];W[fc]))
(;B[fc];W[fb]
(;B[ha];W[ia])
(;B[ia];W[ha]))
(;B[gc]C[NOTTHIS])
(;B[fa];W[fb]
(;B[ia];W[ha])
(;B[ha];W[ia])))
(;B[gc];W[gb]
(;B[ia];W[ha]
(;B[fa];W[fb])
(;B[fb];W[fc])
(;B[fc];W[fb]))
(;B[fb];W[fc];B[fa];W[ha])
(;B[ha];W[ia]
(;B[fb];W[fc])
(;B[fa];W[fb])
(;B[fc];W[fb]))
(;B[fa];W[fb])
(;B[fc];W[fb]))
(;B[fc];W[gb]
(;B[ia];W[fa]TR[ha]C[If black connects white captures and lives])
(;B[ja];W[fb]
(;B[ha];W[ia])
(;B[ia];W[ha]))
(;B[fb];W[fa])
(;B[fa];W[fb]
(;B[ia];W[ha])
(;B[ha];W[ia]))
(;B[ha];W[fa]
(;B[ia];W[ja])
(;B[da];W[ia]))
(;B[gc];W[fb])))
(;B[ha];W[ga]
(;B[ea];W[fb]LB[gc:A]LB[ia:B]C[A and B miai])
(;B[gb];W[ia]
(;B[fa];W[fb]
(;B[ea];W[gc])
(;B[da];W[ea])
(;B[ha];W[gc]
(;B[ga];W[ea])
(;B[ea];W[ga]))
(;B[gc];W[ea]))
(;B[fb];W[fa])
(;B[da];W[fb]LB[gc:A]LB[ea:B]C[A and B miai])
(;B[ea];W[fa]
(;B[fc];W[fb])
(;B[da];W[fb])
(;B[fb];W[da])
(;B[gc];W[fb]))
(;B[fc]
(;W[fb])
(;W[fa]C[CHOICE];B[fb];W[gc]C[CHOICE]))
(;B[gc];W[ea]
(;B[fb];W[fa])
(;B[fa];W[fb]))
(;B[ja];W[ea]
(;B[fb];W[fa])
(;B[fc];W[fa];B[da];W[gc])
(;B[gc];W[fa])
(;B[fa];W[fb])
(;B[da]C[NOTTHIS])))
(;B[fa];W[ia]
(;B[ea];W[fb])
(;B[gb];W[fb]
(;B[ea];W[gc])
(;B[da];W[ea])
(;B[ha];W[gc]
(;B[ga])
(;B[ea];W[ga]))
(;B[gc];W[ea]))
(;B[fb];W[ea]
(;B[gc];W[gb])
(;B[fc];W[gb])
(;B[gb];W[fc]
(;B[ha];W[gc]C[Black cannot connect inside])
(;B[ja]C[NOTTHIS])
(;B[da]C[NOTTHIS]))
(;B[da];W[gb])
(;B[ja];W[gb]))
(;B[fc];W[fb])
(;B[gc];W[fb])
(;B[ja];W[fb])
(;B[da];W[ea];B[gb];W[fb]))
(;B[fb];W[gb]
(;B[ea];W[fa]LB[fc:A]LB[ia:B]C[A and B miai])
(;B[fa];W[ea]LB[fc:A]LB[ia:B]C[A and B miai])
(;B[fc];W[ia]
(;B[ea];W[fa])
(;B[da];W[fa]))
(;B[da];W[ea]LB[fc:A]LB[ia:B]C[miai])
(;B[gc];W[fc]
(;B[da];W[ea])
(;B[ia];W[fa])
(;B[ea];W[fa]))
(;B[ia];W[fc]
(;B[fa];W[ea])
(;B[ea];W[fa])))
(;B[fc];W[fb]LB[ea:A]LB[ia:B]C[miai])
(;B[gc];W[fb]LB[ea:A]LB[ia:B]C[Miai])
(;B[da]C[NOTTHIS])
(;B[ia];W[fb])
(;B[ja];W[fb]))
(;B[da]C[NOTTHIS];W[ea]
(;B[ia];W[ha]
(;B[fb];W[gb]
(;B[fa];W[fc])
(;B[fc];W[fa])
(;B[ga]C[NOTTHIS])
(;B[gc]C[NOTTHIS];W[fa]))
(;B[gb];W[fb]
(;B[ga];W[gc])
(;B[gc];W[ga])
(;B[fc]C[NOTTHIS])
(;B[fa]C[NOTTHIS]))
(;B[gc]C[NOTTHIS];W[gb]
(;B[fb];W[fa])
(;B[fc];W[fb])
(;B[fa];W[fb])
(;B[ga]C[NOTTHIS]))
(;B[fc]C[NOTTHIS])
(;B[ga]C[NOTTHIS])
(;B[fa]C[NOTTHIS]))
(;B[ja];W[ia]
(;B[ga];W[gb]
(;B[fb];W[fc])
(;B[fa]C[NOTTHIS])
(;B[fc]C[NOTTHIS])
(;B[gc]C[NOTTHIS])
(;B[ha]C[NOTTHIS]))
(;B[gb];W[ga]
(;B[fa];W[fb])
(;B[fb];W[fa])
(;B[fc];W[fb])
(;B[gc];W[fb]))
(;B[gc];W[gb]
(;B[fb];W[fa])
(;B[fc]C[NOTTHIS])
(;B[ga]C[NOTTHIS])
(;B[fa]C[NOTTHIS];W[fb])
(;B[ha]C[NOTTHIS]))
(;B[fb];W[gb]
(;B[ga];W[fc])
(;B[fa];W[fc])
(;B[fc];W[ga])
(;B[ha]C[NOTTHIS])
(;B[gc]C[NOTTHIS];W[fa]))
(;B[fc];W[fb]
(;B[gb];W[gc])
(;B[ga];W[gb])
(;B[gc];W[gb])
(;B[fa]C[NOTTHIS])
(;B[ha]C[NOTTHIS]))
(;B[fa];W[fb]
(;B[gb]C[NOTTHIS];W[gc])
(;B[ga]C[NOTTHIS])
(;B[gc]C[NOTTHIS]))
(;B[ha]C[NOTTHIS])))
(;B[ja]C[NOTTHIS]))
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