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life and death
flag problem... (2) Well Constructed (2) Needs Fixing Invalid Duplicate
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Problem 14071
Created 2010-10-27
Name Unexpected lizard
Source Osakataro [7d] vs. nulachier [6d], Igs. 27.10.10.
Rating
Difficulty 13 kyu
Average Solve Time 79 secs
User Attempts
1328 / 3494
Solve Ratio Rating 6 kyu
rating history
This position comes from the game between Osakataro[7d] and nulachier[6d] on Igs. (27.10.10). White (Osakataro) missed this move in the actual game, and finaly lost by 17.5 points. Had he seen it, he would have turned the tables.
(;AB[bc]AB[bd]AB[cd]AB[dd]AB[dc]AB[ed]AB[ee]AB[ef]AB[df]AB[cg]AB[bg]AB[ch]AB[dh]AB[eh]AB[di]AB[cj]AB[bj]AB[bk]AB[ak]AB[al]AB[am]AB[bm]AB[bn]AB[cn]AW[bf]AW[cf]AW[dg]AW[eg]AW[fg]AW[fh]AW[fd]AW[ec]AW[eb]AW[db]AW[cb]AW[cc]AW[bb]AW[fb]AW[gc]AW[gb]AW[hb]AW[hd]AW[ei]AW[ej]AW[dj]AW[ck]AW[bl]AW[cm]AW[cl]AW[dn]AW[co]AW[bo]AW[ao]AW[an]AW[do]AW[dm]AW[fi]AW[dk]AB[ci]AW[bi]C[White to find a ko]C[6d]IWSZ[15]AP[goproblems]
(;W[ah]
(;B[af]
(;W[ag]
(;B[ae];W[aj];B[ai]C[Ko !RIGHT])
(;B[be]C[];W[ae];B[ce];W[af];B[ad];W[aj];B[ai]C[Ko !RIGHT]))
(;W[ae]
(;B[ag];W[aj];B[ai]C[Ko !RIGHT])
(;B[bh];W[ai];B[be];W[ag]C[RIGHT])))
(;B[ag];W[af];B[ce];W[aj];B[ai]C[Ko !RIGHT])
(;B[bh]C[Black's mistake];W[ai]
(;B[ag];W[af];B[aj];W[ai];B[ce];W[ah];B[ae];W[bi]C[RIGHT])
(;B[af];W[ae]C[RIGHT];B[be];W[ag]C[RIGHT]))
(;B[aj]C[Black's mistake]
(;W[ag];B[ce];W[bh]C[RIGHT])
(;W[bh]
(;B[af];W[ae]C[RIGHT])
(;B[ag];W[af];B[ai];W[bh];B[ce];W[ah];B[ae];W[bi]C[RIGHT]))
(;W[ai]
(;B[af];W[ae]C[RIGHT])
(;B[ag];W[af];B[bh];W[ai];B[ce];W[bi];B[ae];W[ah]C[RIGHT])))
(;B[ai];W[aj]C[RIGHT]))
(;W[bh])
(;W[aj])
(;W[ai];B[af])
(;W[ag];B[ah]
(;W[af];B[ai])
(;W[ai];B[af]))
(;W[ae];B[ag])
(;W[af];B[ai]))
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