(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[6.50] AW[eo][fo][dp][fp][aq][cq][dq][fq][ar][br][es][fs]AB[cn][en][fn][gn][do][go][ap][bp][cp][gp][bq][eq][gq][gr][gs]C[Black's move, your task is to kill the group of whites in the corner] (;B[dr] ;W[cr] (;B[fr] ;W[ep] (;B[er]C[Correct! RIGHT]) (;B[ds] ;W[cs] (;B[er]C[Correct! RIGHT]) (;B[bs] ;W[er]) (;B[as] ;W[er])) (;B[cs] ;W[er]) (;B[bs] ;W[er]) (;B[as] ;W[er])) (;B[er] ;W[fr]) (;B[ep] ;W[er]) (;B[ds] ;W[fr])) (;B[fr] ;W[dr] (;B[er] ;W[ds] (;B[bs] ;W[cs] ;B[ep] ;W[as]) (;B[cs] ;W[bs] ;B[ep] ;W[cr])) (;B[ep] ;W[er] (;B[cs] ;W[bs]) (;B[bs] ;W[cs])) (;B[cs] ;W[bs] (;B[ds] ;W[er] ;B[ep] ;W[cr]) (;B[er] ;W[ds] ;B[ep] ;W[cr])) (;B[ds] ;W[cs])) (;B[er] ;W[dr] (;B[fr] ;W[ds] (;B[ep] ;W[cs]) (;B[cs] ;W[bs] ;B[ep] ;W[cr]) (;B[bs] ;W[cs] ;B[ep] ;W[as])) (;B[ep] ;W[fr]) (;B[cs] ;W[ds] (;B[fr] ;W[bs] ;B[ep] ;W[cr]) (;B[bs] ;W[fr])) (;B[ds] ;W[cs])) (;B[cr] ;W[dr] (;B[cs] ;W[ds] (;B[fr] ;W[bs]) (;B[bs] ;W[as] (;B[fr] ;W[ep] (;B[cs] ;W[er]) (;B[er] ;W[cs])) (;B[cs] ;W[fr]))) (;B[fr] ;W[cs])) (;B[ds] ;W[dr] (;B[fr] ;W[cs]) (;B[cs] ;W[fr]) (;B[er] ;W[cs])))