(;CA[ks_c_5601-1987]AB[pd][pj]AW[dd][dp]C[Lecture 4 White's common overplay against sanrensei (Part 1) Made by lovelove @L19 http\://www.lifein19x19.com/forum/viewtopic.php?f=15&t=7273] AP[MultiGo:4.4.4]SZ[19]AB[pp]MULTIGOGM[1] ;W[qn]LB[qo:A][nq:B]C[Approaching this side in sanrensei usually appears in handicap games. Black should play on A to attack white stones in a comfortable position. Black B will too easily give white a base while senrensei getting broken.] (;B[qo];W[pn];B[np];W[rj]LB[qi:A][qk:B]C[This is a overplay. Responding on A is what white wants. Black should play B to punish.] (;B[qi];W[ri] (;B[rh];W[qh]C[Black in trouble.]) (;B[qh];W[pk];B[ok];W[pl]C[White is settled too easily.])) (;B[qk];W[rk];B[rl]LB[rm:A][ql:B]C[White has two main responses here. I'll explain about A in this lecture.] ;W[rm];B[ql];W[sl];B[qi]C[This is a important move to keep white unsettled.];W[ri] ;B[qh];W[rh];B[qg]LB[ro:A][rg:B]C[White only has one eye. Both A and B will not help white making another eye.] (;W[ro];B[rp]C[T6 area is a false eye. White needs to run away.];W[nn];B[so];W[rn] ;B[kp]) (;W[rg];B[qf];W[rf];B[re];W[ro];B[rp]C[Still white group can't make two eyes inside.] ;W[nn];B[so];W[rn];B[kp]))) (;B[nq];W[rp];B[qq];W[ql]))