A brief introduction to the opening, taken from Sam Collin's Understand the Chess Openings
"The Dutch is three systems bundled into one. The first, the Stonewall, is marked by black pawns on c6, d5, e6 and f5, a structure not without defects but which also offers unusual advantages, like solidity, restriction of the white e4-break (an important tool in the Dutch) and a central space advantage.
The Leningrad sees the fianchetto of the black dark-squared Bishop, coupled with ...d5. Black aims for the ...e5 break, which could equalize instantly, but in the meantime creates a nasty hole on e6.
The final system, the Classical, creates fewer weaknesses but confers correspondingly fewer benefits - the black plan on attack with Qe8-h5 and a rook-lift to the h-file looks a little primitive against precise play, so the modern interpretation relies more on restraint (...a5) and exchange (...Ne4)."
Botvinnik played the Dutch and so should you!
Dutch defence Open
I'm gonna start this tournament if we can get 20 players. The new rounds will have 3 players, 1 game at a time per player and one advancing to the next round.