(;SZ[19]AW[nm]AW[om]AW[pn]AW[ko]AW[mo]AW[no]AW[po]AW[jp]AW[mp]AW[op]AW[jq]AW[pq]AW[qq]AW[kr]AB[ol]AB[pm]AB[qm]AB[on]AB[oo]AB[ro]AB[np]AB[qp]AB[kq]AB[lq]AB[mq]AB[nq]AB[rq]TR[on]TR[oo]C[How can black make use of the marked stones?]GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]KM[0.00]PW[White]PB[Black] (;B[pp];W[oq] (;B[qr];W[ps]) (;B[or];W[ps])) (;B[oq];W[pp]) (;B[qr];W[pr] (;B[pp];W[oq] (;B[ps];W[nn] (;B[or]C[RIGHT]) (;B[oo];W[or];B[nr];W[on];B[os]C[RIGHT])) (;B[or];W[ps])) (;B[rr];W[nn]) (;B[oq];W[pp])) (;B[pr];W[qr] (;B[or];W[nn]) (;B[pp];W[oq];B[or];W[nn])))