Problem 15916 goproblems.com

Add / View flags


Author	mal	Created	2012-03-15
Difficulty	8 dan (history)	Source	inspired by problem 15914 by Asplenium
AVG solve time	99 sec	Stars	N/A
User attempts	49 / 302	Collections	Prevent the Connection
Genre	life and death ⓢ	Your attempts	N/A
Similar problems
Created	2012-03-15
Source	inspired by problem 15914 by Asplenium
Stars	N/A
Collections	Prevent the Connection
Your attempts	N/A

(;AB[pp]AW[or]AW[qq]AB[qp]AW[pq]AB[lr]AB[lq]AB[lp]AB[lo]AB[ln]AB[lm]AW[kr]AW[kq]AW[kp]AW[ko]AB[jp]AB[jn]AB[im]AB[iq]AB[hq]AB[gp]AB[fp]AB[ep]AB[eq]AB[er]AB[es]AW[gq]AW[fq]AW[fr]AW[fs]AW[hr]AW[ir]TR[kr]TR[kq]TR[kp]TR[ko]C[Black to kill the marked stones]AP[goproblems] (;B[ks];W[js] (;B[hs] (;W[is];B[gs];W[gr] (;B[ls]C[RIGHT]) (;B[jq];W[ls];B[mr]C[RIGHT]) (;B[mr]C[works (see comment by Bass)RIGHT])) (;W[ls] (;B[ms];W[mr];B[ks]) (;B[mr]C[RIGHT] (;W[jq];B[gr]C[RIGHT]) (;W[is];B[gs];W[gr];B[jq]C[RIGHT])))) (;B[jq];W[ls];B[mr];W[gs];B[jr];W[is]) (;B[ls];W[gs]) (;B[gs];W[ls];B[mr];W[jq])) (;B[hs] (;W[ks] (;B[ls];W[is];B[gs];W[gr]C[CHOICE]) (;B[gr];W[is];B[gs];W[ls])) (;W[ls]C[mistake by white] (;B[mr];W[ms];B[ns];W[ks];B[nr];W[is];B[gs];W[gr]) (;B[ms];W[ks] (;B[nr];W[is];B[gs];W[gr]) (;B[mr];W[is];B[gs];W[gr]) (;B[mq];W[is];B[gs];W[gr])))) (;B[gs];W[ls] (;B[ms];W[ks];B[mr];W[gr];B[is];W[js];B[jq];W[jr]C[black cannot play h1 to reduce white's eye-space]) (;B[mr] (;W[ms]C[White connects out (and the throw in at L1 will not help you)CHOICE]) (;W[gr]C[wrong play by white (thanks to piccolo) If white plays this while you are trying to solve the problem I have messed up with the interface.];B[is];W[js];B[jq];W[jr]C[black cannot fill in at h1]))) (;B[jr];W[ls] (;B[ms];W[ks];B[mr];W[jq];B[hs];W[is];B[gs];W[gr]) (;B[mr];W[ks];B[ms];W[jq];B[hs];W[is];B[gs];W[gr]) (;B[js];W[jq];B[hs];W[ks];B[gr];W[is];B[gs]) (;B[ks];W[js] (;B[jq];W[mr]) (;B[ms];W[jq];B[hs];W[is];B[gs];W[gr];B[ks]))) (;B[is];W[js] (;B[gs];W[gr]C[black cannot fill at h1]) (;B[ls];W[hs])) (;B[ls];W[ks] (;B[jq];W[jr]) (;B[jr];W[jq];B[gs];W[gr];B[is];W[js]) (;B[js];W[jr]) (;B[is];W[hs] (;B[jr];W[jq];B[gs];W[js]) (;B[gs];W[jq] (;B[js];W[gr]) (;B[gr];W[js]))) (;B[hs];W[is];B[gs];W[gr]) (;B[gs];W[gr];B[is];W[js]C[black cannot fill in at h1])) (;B[js];W[ks] (;B[hs];W[ls]C[white escaped]TR[ko]TR[kp]TR[kq]TR[kr]) (;B[jr];W[ls]TR[ko]TR[kp]TR[kq]TR[kr]C[The marked stones connect out.])) (;B[jq];W[ls] (;B[mr];W[jr];B[hs];W[is];B[gs];W[ks];B[gr];W[ms]TR[kr]TR[kq]TR[kp]TR[ko]C[those were not the stones you wanted to capture]) (;B[ms];W[jr];B[ks];W[gs])))