(;GM[1]FF[4]AP[Drago:4.21]SZ[19]CA[UTF-8]C[Lecture 27 4-4 corner attachment joseki (Part 3) *Always look at the former branch first.* Made by lovelove @L19 http://www.lifein19x19.com/forum/viewtopic.php?f=15&t=7273];W[dp];B[fq];W[cm] ;B[dq]C[Black plays this move to get sente.];W[cq] (;B[cr]C[Bad move when white has a large night's extension.];W[cp] ;B[er]C[White better]) (;B[cp] (;W[do]C[Right response] (;B[bq] ;W[cr]C[Black has no more good follow-ups.]) (;B[cr];W[bq];B[er];W[br];B[bs] ;W[co]C[Joseki, black has settled in sente and white saved her corner.])) (;W[cr];B[co];W[eq];B[ep];W[dr] ;B[do]C[White split shape]) (;W[co];B[bp];W[bq];B[do];W[ep];B[bo];W[cn];B[eq];W[eo] ;B[br]C[Tesuji, black has corner.])))