(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[White]PB[Black]AW[ap][cp][dp][ep][fp][bq][fq][fr][fs]AB[cq][dq][eq][ar][br][ds][es]LB[an:0][bn:1][cn:2][dn:3][en:4][fn:5]C[FORCE
how many different first moves kill this group? click on the number]PL[W]
(;W[dn]CR[dn]
;B[dm]CR[dm]C[RIGHT
now you can play with the options]
(;W[er]CR[er]
;B[dr]CR[dr]
(;W[bs]CR[bs]C[RIGHT])
(;W[cs]CR[cs]
;B[cr]CR[cr]
;W[bs]CR[bs]C[RIGHT
]))
(;W[cs]CR[cs]
;B[bs]CR[bs]
(;W[dr]CR[dr]C[RIGHT])
(;W[er]CR[er]
;B[dr]CR[dr]
;W[cr]CR[cr]C[RIGHT])
(;W[cr]CR[cr]
;B[dr]CR[dr]))
(;W[bs]CR[bs]
;B[cs]CR[cs]
(;W[er]CR[er]C[RIGHT])
(;W[dr]CR[dr]
;B[er]CR[er]
;W[cr]CR[cr]C[RIGHT])
(;W[cr]CR[cr]
;B[dr]CR[dr]))
(;W[cr]CR[cr]
;B[dr]CR[dr])
(;W[as]CR[as]
;B[bs]CR[bs])
(;W[dr]CR[dr]
;B[er]CR[er]
(;W[cs]CR[cs]
;B[cr]CR[cr])
(;W[cr]CR[cr]
;B[cs]CR[cs]))
(;W[aq]CR[aq]
;B[cs]CR[cs]))
(;W[an]CR[an]C[wrong. after getting the correct answer, you can explore options])
(;W[bn]CR[bn]C[wrong. after getting the correct answer, you can explore options])
(;W[cn]CR[cn]C[wrong. after getting the correct answer, you can explore options])
(;W[en]CR[en]C[wrong. after getting the correct answer, you can explore options])
(;W[fn]CR[fn]C[wrong. after getting the correct answer, you can explore options]))
adum