invalid problem set
Problem | 5835 |
Created | 2005-01-16 |
Source | a game. |
Rating | |
Difficulty | 6 dan |
Average Solve Time | 68 secs |
User Attempts |
203 / 1753 |
Solve Ratio Rating | 3 dan |
| rating history |
(;AB[lq]AB[lp]AW[mq]AW[mp]AW[no]AW[op]AB[mo]AB[mn]AB[ln]AB[kn]AW[lo]AW[ko]AB[jn]AW[jp]AW[hp]AW[in]AW[hn]AW[go]C[Black to capture the marked stones.]AB[lr]AB[hq]AB[mr]AW[nr]AW[oq]TR[ko]TR[lo]AW[fq]AP[goproblems]
(;B[jo];W[kp]
(;B[ip]
(;W[iq]
(;B[io]
(;W[jq]
(;B[hr]
(;W[kr]
(;B[ir]
(;W[jr]
(;B[ls];W[ks];B[is];W[ns];B[js];W[ms];B[kq]C[RIGHT])
(;B[ks];W[ls]
(;B[ms];W[js];B[is];W[ls]C[two-step ko])
(;B[is];W[js];B[ms];W[ns]C[ko]))
(;B[js];W[ks]
(;B[is];W[ms])
(;B[ls];W[is];B[hs];W[ns];B[js]C[direct ko])
(;B[ms];W[is];B[hs];W[ns]))
(;B[ms];W[ks];B[is];W[ns];B[js]C[seki]))
(;W[ks];B[jr];W[kq];B[js]C[RIGHT])
(;W[js];B[jr]C[RIGHT])
(;W[ls];B[jr]C[RIGHT])
(;W[kq];B[ks]C[RIGHT]))
(;B[jr];W[ir]
(;B[kq];W[js])
(;B[is];W[js]
(;B[hs];W[kq])
(;B[kq];W[hs]))
(;B[js];W[is]
(;B[ks];W[ls])
(;B[ls];W[ks]))
(;B[ks];W[js]))
(;B[ks]
(;W[js]
(;B[kq];W[ls])
(;B[ls];W[kq])
(;B[ir];W[ls];B[jr]C[RIGHT])
(;B[jr];W[ir])
(;B[is];W[ls];B[ms];W[ks]
(;B[kq];W[ns])
(;B[jr];W[ir])
(;B[ir];W[ns])))
(;W[jr];B[ls];W[js];B[is];W[ns];B[ir]C[RIGHT])
(;W[ir];B[js]
(;W[jr];B[is]C[RIGHT])
(;W[is];B[kq]C[RIGHT])
(;W[ms];B[is]C[RIGHT];W[ns];B[ls]C[RIGHT])))
(;B[js];W[ls]
(;B[ks];W[kq];B[ms];W[ns];B[ls];W[is])
(;B[ms];W[ns];B[ks];W[kq];B[ls];W[is])
(;B[jr];W[ms])
(;B[ir];W[ms])))
(;W[ir];B[is]
(;W[js];B[hs]
(;W[kr];B[kq]C[RIGHT])
(;W[jr];B[ks];W[ms];B[kr]C[RIGHT])
(;W[kq];B[kr]C[RIGHT])
(;W[ks];B[kr]
(;W[jr];B[ls]C[RIGHT])
(;W[ms];B[jr]C[RIGHT])))
(;W[kr];B[js]
(;W[ks];B[kq]C[RIGHT])
(;W[ms];B[ks];W[ns];B[ls]C[RIGHT])))
(;W[jr];B[is]
(;W[js];B[ks]
(;W[ms];B[kr];W[ns];B[ir]C[RIGHT])
(;W[kr];B[ls];W[ns];B[ir]C[RIGHT]))
(;W[kr];B[ls];W[ns];B[js];W[ks];B[ir]C[RIGHT];W[ms];B[kq]C[RIGHT])
(;W[ks];B[js]
(;W[ls];B[kr]C[RIGHT])
(;W[kr];B[ls]C[RIGHT])))
(;W[js]
(;B[kr]
(;W[jr];B[ks];W[ms];B[is];W[ns];B[ir]C[RIGHT])
(;W[ks];B[jr];W[ir];B[kq];W[is];B[hs]C[RIGHT]))
(;B[ir];W[jr];B[ks]
(;W[ms];B[kr]C[RIGHT])
(;W[kr];B[ls]C[RIGHT])))
(;W[is];B[ir];W[jr];B[ks];W[js]C[RIGHT]))
(;B[ir];W[hr];B[gq];W[gr];B[gp];W[fp])
(;B[jr];W[hr];B[gq];W[gr];B[gp];W[fp])
(;B[gp];W[hr]
(;B[gq];W[gr])
(;B[ho];W[gr])))
(;W[jr];B[jq];W[kq];B[kr];W[jq];B[ir];W[js];B[is];W[ks];B[ls]C[RIGHT])
(;W[ir];B[jq]C[RIGHT])
(;W[kq];B[kr];W[jq];B[ir]C[RIGHT]))
(;B[jq];W[io]
(;B[kq];W[ip])
(;B[ir];W[ip]))
(;B[kq];W[io];B[jq];W[ip]))
(;W[io];B[iq]C[RIGHT]))
(;B[iq];W[ip])
(;B[io];W[ip]))
(;B[ip];W[jo]
(;B[io];W[iq];B[jq];W[ho])
(;B[iq];W[io]))
(;B[kp];W[jo])
(;B[io];W[jo];B[ip];W[iq];B[jq];W[ho])
(;B[jq];W[ip]
(;B[jo];W[kp])
(;B[kp];W[jo])))
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