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The venue of the finals of the Dutch Open National Championship 2021 were the Dutch headquarters of title sponsor Deloitte in the port of Rotterdam. Deloitte is a consulting firm headquartered in London and active in 100 countries.
The 21-year-old Warmerdam dominated the finals. Warmerdam comes from Tegelen, studies economics in Tilburg and is coached by Loek Van Wely. In 2018 became an International Master and in 2021 he became a Grandmaster.
Warmerdam won the mini-match against Swinkels 2-0, and he won both mini-matches against Lai and Pruijssers with 1.5-0.5 to finish the tournament with 5.0/6.
On the last day of the tournament he easily demolished Swinkel's Stonewall and won in only 24 moves.
Warmerdam,Max (2608) - Swinkels,Robin (2523) A90
Deloitte Dutch Championship 2021 Rotterdam (6.1), 03.12.2021
1.d4 e6 2.c4 f5 3.g3 Nf6 4.Bg2 d5 5.Nf3 Bd6 6.0–0 0–0 7.Nc3 c6 A suitable opening for the Dutch Championship but in this game Black's Stonewall turned out to be brittle.
8.Qc2 Ne4 9.Rb1 Nd7 10.b4 The white plan looks much more dynamic than the cumbersome and time-consuming occupation of the square e5 which textbooks recommended in the 1960s.
10...b6 11.b5 Qc7 12.Bb2 In some previous games White tried 12.Bd2.
12...Bb7 13.Rfc1 Nxc3 13...c5!?; 13...Rac8!?
14.Qxc3 cxb5 Black wanted to exchange queens, but...
15.c5 The exchange on c5 would now open the diagonal a1-a8. This is not pleasant for Black but bearable.
15...b4? 15...bxc5 16.dxc5 Nxc5 and g7 is protected.
16.Qxb4 Even stronger was 16.Qe3 After 16...bxc5 17.Qxe6+ Kh8 18.dxc5 Nxc5 the engines indicate 19.Qh6 which creates really ugly threats.
16...Be7 16...bxc5? 17.dxc5 Nxc5 18.Bd4+–
17.Qd2 17.Qc3!
17...Rfc8 Better was 17...Rfe8 to be able to defend the e-pawn.
18.Qe3 Qc6 Better was 18...Nf8 19.Ba3 though White is still clearly better.
19.cxb6 Qxb6 20.Bc3 Less precise is 20.Ba3 Rxc1+ 21.Qxc1 Bxa3 22.Rxb6 Bxc1 23.Rxb7 Nf6 24.e3 Ne4. White is better but Black can still fight.
20...Qa6 Time for the finishing touch:
21.Rxb7 Qxb7 22.Qxe6+ Kf8 23.Ne5 Sxe5 24.Lxd5 1–0
Max Warmerdam with the winner's trophy