The May clinic features games with the Queen's Gambit Declined Exchange Variation from the Tiger Chess Themed Training Tournaments on Lichess. The starting position was the one that arises after the moves 1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.cxd5 exd5 5.Nc3 Be7 6.Bg5 c6 7.Qc2 O-O 8.e3 Nbd7 9.Bd3 Re8 10.O-O Nf8, which is considered a key opening position. This features in two Tiger Chess courses, the White 1.d4 Repertoire course (in which 11.h3 is recommended for White) and the Building an Opening Repertoire course in which it is recommended for Black.

Both sides have chances in this line and it is rich in strategic and tactical ideas. One of the key plans for White is a minority attack with b2-b4-b5. Dandanmian brought this off in one of his games and here he had a winning idea (see diagram):

 

White to play found 21.Ba6!, winning the rook on c8 because 21...Ra8 is met by 22.Bb7. Black struggled on for some moves but the position is hopeless.

Nigel Davies