(;CA[utf-8]AB[pn][qq][nc][pd][pp]AW[dd][dp][pr][nq][kq]C[3-3 Lecture 4 3-3 invasion after enclosure *Always look at the top branch first.* made by lovelove @L19 http\://www.lifein19x19.com/forum/viewtopic.php?f=15&t=7273] AP[MultiGo:4.4.4]SZ[19]AB[qj]MULTIGOGM[0] (;W[qc]C[There is an invisible branch.];B[qd];W[pc];B[oc];W[rd];B[re] (;W[rc]C[This is not sente. White will be in trouble soon.];B[pb];W[qb];B[ob] (;W[qe];B[rf];W[od];B[pe];W[qf];B[rg];W[pf];B[oe];W[nd];B[md];W[ne];B[of];W[pg] ;B[ng]C[There is no way white can capture black's worm, unless black plays elsewhere twice. white's corner dead]) (;W[rf];B[qe];W[se];B[qg]C[white dead])) (;W[rb]C[only move];B[sd];W[sc];B[rc]C[ko])) (;AB[pd][pp][fq][dr][iq][qf]AE[kq][nq][pr][qq][pn][qj][nc]AW[dd][dp][cn][cq][jc] ;W[qc]C[Well, playing 3-3 now is bad in this board position, but don't care too much.] ;B[pc];W[qd];B[qe];W[pb];B[ob];W[qb]C[This connection is now sente.] (;B[rd]C[overplay];W[rc];B[re];W[nb];B[oc];W[oa];B[mc];W[mb];B[lc];W[lb]C[white connected]) (;B[nc]C[right response];W[re];B[rf];W[rd]C[gote life];B[fc]C[a good way for black to use thickness around top-right corner])))