(;AB[br]AB[cr]AB[dr]AB[eq]AB[fp]AB[fq]AB[gr]AB[hr]AB[fs]AW[hs]AW[is]AW[ir]AW[gq]AW[hq]AW[fo]AW[go]AW[iq]AW[ep]AW[dq]AW[do]AW[cq]AW[bq]LB[io:T]LB[bq:1]C[White plays 1. Does black need to defend at A2 or kan he play tenuki (J5)?FORCE]AP[goproblems]
(;B[io]
(;W[ar]
(;B[es]
(;W[bs];B[cs]C[RIGHT])
(;W[cs];B[bs]C[RIGHT])
(;W[gs];B[fr]C[RIGHT])
(;W[fr];B[gs]C[RIGHT])
(;W[ds];B[cs]C[RIGHT])
(;W[gp];B[gs]C[RIGHT]))
(;B[er];W[gs]
(;B[bs];W[ds])
(;B[ds];W[bs]))
(;B[gs];W[es]
(;B[er];W[fr])
(;B[ds];W[fr]))
(;B[fr];W[bs]
(;B[cs];W[es])
(;B[es];W[cs]))
(;B[ds];W[bs]
(;B[er];W[gs])
(;B[gs];W[er]))
(;B[cs];W[gs]
(;B[es];W[fr])
(;B[fr];W[es]))
(;B[bs];W[ds]
(;B[er];W[gs])
(;B[es];W[fr]
(;B[gs];W[er])
(;B[er];W[gs]))
(;B[fr];W[es])
(;B[gs];W[es])
(;B[cs];W[gs]
(;B[es];W[fr])
(;B[fr];W[es])))
(;B[as];W[bs]
(;B[er];W[gs])
(;B[es];W[cs])
(;B[cs];W[gs]
(;B[fr];W[es])
(;B[es];W[fr])
(;B[as];W[aq]
(;B[es];W[fr])
(;B[fr];W[es])))))
(;W[gs];B[fr]
(;W[es];B[ar]C[RIGHT];W[gp];B[er]C[RIGHT])
(;W[ar];B[bs]
(;W[ds];B[es];W[gp];B[cs]C[RIGHT])
(;W[es];B[ds];W[gp];B[er]C[RIGHT]))
(;W[bs];B[ar]C[RIGHT]))
(;W[fr];B[er]
(;W[ar];B[gs]C[RIGHT])
(;W[gs];B[ar];W[fr];B[gr]C[RIGHT]))
(;W[es];B[ar]
(;W[fr];B[er];W[gs];B[fr]C[RIGHT])
(;W[gs];B[fr];W[gp];B[er]C[RIGHT])
(;W[er];B[ds]
(;W[gp];B[fr]C[RIGHT])
(;W[gs];B[fr]C[RIGHT])))
(;W[bs];B[ar]C[RIGHT]))
(;B[ar]C[not necessary.]))