Problem	21928
Created	2018-04-18
Source
Rating

Difficulty	8 dan
Average Solve Time	23 secs
User Attempts	2 / 26
Solve Ratio Rating	4 dan
	rating history

tough

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[0.00] AW[el][gl][cm][dm][fm][bn][ho][lo][bp][cp][dp][gp][jp][kp][eq][er]AB[dj][dk][dl][em][lm][en][kn][do][eo][go][ep][iq][jq][lq][mq]TR[em][en][do][eo][ep] C[Black to safe the marked stones. It is not easy!] (;B[gn] ;W[hn] (;B[hm] ;W[gm] (;B[fk] ;W[fl] ;B[hl] ;W[gk] ;B[hp] ;W[ip] ;B[hq] ;W[fp] (;B[fo] ;W[gr] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[fo] ;W[gr] ;B[lp] ;W[ko] ;B[mo] C [RIGHT])) (;B[hl] ;W[fn] ;B[fo] ;W[gk] (;B[hp] ;W[ip] ;B[hq] ;W[fq] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[hk] ;W[gj] ;B[hp] ;W[ip] ;B[hq] ;W[fq] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]))) (;B[fk] ;W[fl] ;B[hm] ;W[gm] ;B[hl] ;W[gk] ;B[hp] ;W[ip] ;B[hq] ;W[fp] (;B[fo] ;W[gr] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[fo] ;W[gr] ;B[lp] ;W[ko] ;B[mo] C [RIGHT])) (;B[hp] ;W[ip] ;B[hq] ;W[fp] (;B[hm] ;W[gm] ;B[hl] ;W[gk] (;B[fo] ;W[gr] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[fo] ;W[gr] ;B[lp] ;W[ko] ;B[mo] C [RIGHT])) (;B[fo] ;W[gr] ;B[hm] ;W[gm] (;B[hl] ;W[gk] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[fk] ;W[fl] ;B[hl] ;W[gk] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT])) (;B[fk] ;W[fl] (;B[fo] ;W[gr] ;B[hm] ;W[gm] ;B[hl] ;W[gk] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[hm] ;W[gm] ;B[hl] ;W[gk] (;B[fo] ;W[gr] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[fo] ;W[gr] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]))))) (;B[fk] ;W[fl] ;B[gn] ;W[hn] (;B[hm] ;W[gm] ;B[hl] ;W[gk] ;B[hp] ;W[ip] ;B[hq] ;W[fp] (;B[fo] ;W[gr] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT]) (;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[fo] ;W[gr] ;B[lp] ;W[ko] ;B[mo] C [RIGHT])) (;B[hp] ;W[ip] ;B[hq] ;W[fp] ;B[fo] ;W[gr] ;B[hm] ;W[gm] ;B[hl] ;W[gk] ;B[io] ;W[in] ;B[jn] ;W[im] ;B[il] ;W[jm] ;B[jl] ;W[jo] ;B[km] ;W[io] ;B[lp] ;W[ko] ;B[mo] C [RIGHT])))