(;AW[ar]AW[br]AW[cr]AW[dr]AW[er]AW[es]AB[fs]AB[fr]AB[fq]AB[eq]AB[dq]AB[cq]AB[bq]AB[aq]C[can black kill white? please choose YES or NO.FORCE]LB[dd:YES]LB[df:NO]AP[goproblems]
(;B[df]AB[cs]AW[bs]LB[cs:1]LB[bs:2]C[even if black play in c1, white can make eyes.RIGHT])
(;B[dd]))