One way of invading this moyo is to come in to the 5-2 point.
(;
AB[qj][pp][nq]
LB[ro:A]
C[Please play at 'A' to start. FORCE]
;W[ro];B[rp]LB[qn:x][qo:y][qp:z]C[Note: Other black replies of x, y and z, are not considered here.]
;W[qp]
(;B[qq];W[qo];B[rq]
(;W[ql]C[RIGHT])
(;W[po]
(;B[op];W[ql]C[RIGHT CHOICE])
(;B[ql];W[op];B[pq];W[nn]C[RIGHT CHOICE])))
(;B[qo];W[qq];B[rq];W[po];B[qn];W[pq];B[op];W[rn];B[rr];W[qm];B[pn]
(;W[pm];B[on];W[om];B[rl];W[nn];B[oo];W[rm];B[nm];W[nl];B[mm]
(;W[rk]C[RIGHT CHOICE])
(;W[ok]C[RIGHT]))
(;W[om];B[on];W[nn]C[RIGHT])))