(;AW[pf]AW[qf]AB[pg]AB[ph]AB[pi]AB[oh]AW[og]AW[ng]AW[nh]AW[ni]AW[oi]AW[pj]AB[oj]AW[qi]AB[qk]AW[pl]AW[nk]AB[ql]C[Black to save his four stones.]AP[goproblems]
(;B[qj]
(;W[pk]
(;B[qh]
(;W[ri]
(;B[rh]
(;W[rg]
(;B[sh];W[si]
(;B[sg];W[sf]
(;B[rj];W[qg])
(;B[sj];W[qg]))
(;B[rj];W[sg];B[sj]C[RIGHT])
(;B[sj];W[sg];B[rj]C[RIGHT]))
(;B[si];W[qg]
(;B[rj]C[RIGHT])
(;B[sh];W[sg]
(;B[sj]C[RIGHT])
(;B[rj]C[RIGHT])))
(;B[rj]
(;W[qg]
(;B[si]C[RIGHT])
(;B[sh];W[sg];B[si]C[RIGHT])
(;B[sj];W[sh]))
(;W[sh];B[si]C[RIGHT])
(;W[si];B[sh];W[sg];B[sj]C[RIGHT]))
(;B[sg];W[qg]
(;B[rj];W[sh])
(;B[si];W[sh])
(;B[sh];W[sf]
(;B[si];W[sj])
(;B[rj];W[si])
(;B[sj];W[si])))
(;B[qg];W[sh]))
(;W[qg];B[rj]
(;W[rg];B[si]C[RIGHT])
(;W[si];B[sh];W[rg];B[sj]C[RIGHT])))
(;B[rj];W[rh])
(;B[rg];W[rh]
(;B[qg];W[rf])
(;B[rj];W[qg])))
(;W[rh];B[ri]C[RIGHT]))
(;B[rh];W[qh]
(;B[ri];W[qg])
(;B[qg];W[rg])
(;B[rg];W[qg]))
(;B[qg];W[rg]
(;B[rh];W[qh])
(;B[qh];W[rh])
(;B[ri];W[qh]))
(;B[rg];W[qg]
(;B[rh];W[qh])
(;B[qh];W[rh])
(;B[ri];W[qh]))
(;B[ri];W[qh]
(;B[rh];W[qg])
(;B[rg];W[qg])
(;B[qg];W[rg]))
(;B[rj];W[qh]
(;B[qg];W[rg])
(;B[rg];W[qg]))
(;B[rf];W[qg]
(;B[qh];W[rh])
(;B[ri];W[qh])
(;B[rh];W[qh])
(;B[rg];W[qh])))
(;W[qh];B[pk];W[qg];B[pj]C[RIGHT])
(;W[qg];B[pk];W[qh];B[pj]C[RIGHT]))
(;B[pk];W[qj])
(;B[qh];W[rh]
(;B[qj];W[qg])
(;B[ri];W[qg])
(;B[pk];W[qg])
(;B[rg];W[qg]))
(;B[rh];W[qh]
(;B[qg];W[rg])
(;B[rg];W[qg])
(;B[qj];W[qg])
(;B[pk];W[qg]))
(;B[qg];W[rg]
(;B[qj];W[qh])
(;B[rh];W[qh])
(;B[qh];W[rh])
(;B[pk];W[qh]))
(;B[rg];W[qg]
(;B[qh];W[rh])
(;B[rh];W[qh])
(;B[qj];W[qh])
(;B[pk];W[qh]))
(;B[ri];W[qh]
(;B[rh];W[qg])
(;B[qj];W[qg])
(;B[pk];W[qg])
(;B[qg];W[rg])
(;B[rg];W[qg])))