invalid problem set
Previous
|
Next
|
|
|
life and death
|
|
+2
|
|
Next
|
Problem | 18440 |
Created | 2014-12-04 |
Source | Tsumego Pro Android |
Rating | |
Difficulty | 7 dan |
Average Solve Time | 62 secs |
User Attempts |
12 / 89 |
Solve Ratio Rating | 2 dan |
| rating history |
Save the marked stones. Assume Black will win any ko fight.
(;AB[bc]AB[cc]AB[cb]AW[dc]AW[ec]AW[fc]AB[ed]AB[dd]AB[de]AB[df]AW[dg]AW[dh]AW[cf]AW[cd]AW[bd]AW[bf]AB[cg]AB[ch]AB[ci]AB[ck]C[]TR[cd]TR[bd]TR[be]TR[bf]TR[cf]AW[be]AB[ce]AP[goproblems]
(;W[fg]
(;B[ff]C[CHOICE]
(;W[gf];B[ge]
(;W[fe];B[fd];W[gd];B[ee];W[he];B[gg]C[Please don't play unnecessary ko]
(;W[eg];B[hf];W[ef]C[RIGHT])
(;W[hf];B[eg]C[Please don't play ko]
(;W[eh];B[fh];W[fe]C[only ko])
(;W[fe]C[koNOTTHIS])
(;W[fh];B[eh]))
(;W[fe]C[NOTTHIS]))
(;W[ef]
(;B[fd]C[CHOICE];W[gd]C[RIGHT])
(;B[fe];W[fd];B[ee];W[he];B[gd];W[hd];B[gc];W[gb];B[hc];W[ic];B[hb];W[ib];B[eg];W[ha];B[ef];W[eh]C[RIGHT]))
(;W[fd];B[ef]
(;W[fe];B[gg];W[hf];B[eg])
(;W[eg];B[hf];W[gg];B[fe])
(;W[gg];B[fe];W[he];B[gd])))
(;W[ef];B[ee];W[eg];B[fe];W[gf];B[ge];W[he];B[gd];W[hd];B[gc];W[gb];B[hc];W[ic];B[hb]LB[fb:A]LB[ib:B]C[miai])
(;W[fe];B[ef];W[gf];B[eg];W[eh];B[fh]))
(;B[ge];W[fe];B[fd];W[gd];B[ff];W[ef]C[RIGHT]))
(;W[ff];B[eg]
(;W[eh];B[fe]
(;W[ge];B[fg]C[Black escapes])
(;W[ef];B[ge]))
(;W[ef];B[eh];W[di];B[dj]))
(;W[fe];B[ef];W[fg];B[eg];W[eh];B[ff];W[gf];B[fh])
(;W[ef];B[fe]
(;W[fd];B[ee];W[ge];B[ff];W[gg];B[fg];W[fh];B[eh]
(;W[di];B[fi];W[gh];B[dj];W[ei];B[ej];W[eg];B[eh])
(;W[ei];B[di];W[eg];B[eh]))
(;W[ge];B[ff]))
(;W[fd];B[ef]C[];W[fg];B[ff];W[gf];B[eg];W[eh];B[fh];W[gg];B[ei]))
Toggle next/previous buttons