(;AB[ps]AB[pr]AB[pp]AB[qp]AB[rp]AB[pq]AW[sp]AW[sr]AW[rr]AW[qq]AW[rn]AW[qn]AW[sm]AW[pn]AW[oo]AW[np]AW[nq]AW[nr]AW[ns]C[What can Black do?]AP[goproblems] (;B[so];W[ro] (;B[sq];W[rq] (;B[qr];W[sp]MA[sq]C[Well done! R2 prevented the creation of a dead shape inside! :)RIGHT]LB[qr:A]LB[qq:A]LB[rq:A]LB[rr:A]LB[sr:A]) (;B[rs];W[qr]C[Dead shape inside! :(]) (;B[qs];W[qr]C[Dead shape inside! :(]) (;B[sp];W[qr]C[Dead shape inside! :(])) (;B[rq];W[sq]C[:(]) (;B[qr];W[sq]C[:(])) (;B[sq];W[rq];B[so];W[ro]C[:(]TR[qr]TR[sn]) (;B[rq];W[sq]C[:(]) (;B[qr];W[sq]C[:(]) (;B[rs];W[sq]C[:(]) (;B[ro];W[so]C[:(]))