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GM Sipke Ernst is a Grandmaster and FIDE Trainer who has been a member of the Dutch National Team. His peak Elo is 2606.
Published by ChessBase
The Super Solid Slav Defence
We get the Slav after the moves 1.d4 d5 2.c4 c6. This video course will focus on 3.Nf3 Nf6 4.Nc3 and now dxc4, but the white alternatives leading up to the mainline are also discussed in great detail.
Attacking the Taimanov with g4 in 60 Minutes
In this 60-minute video course you will learn how to anticipate Black's developing schemes, and you will become acquainted with typical sacrifices that white can use to gain a powerful initiative.
by Sipke Ernst
The flexible Open Spanish
In this opening Black opts for active piece play and is not afraid to fight for the initiative from an early stage. One of the many good features of this opening is that Black is often the side which controls the pace of the game.