Game 1: IM Kayden Troff - GM Gata Kamsky
Kamsky brings out the Leningrad Dutch, which his opponent likely was not fully prepared for, judging by the novelty on move 7. Black makes a strategic exchange sacrifice and then takes over the initiative and outplays his opponent. I found both the opening discussion and the idea and execution of the positional exchange sacrifice very useful to see.
Game 2: GM Gregory Kaidanov - GM Conrad Holt
It's always difficult to face your own favorite defense as White, so this game was personally important, as I've struggled to come up with a good reply after 1...c6.
Game 3: GM Melik Kachyan - GM Alex Onischuk
This is an excellent example of a solid Caro-Kann Classical, whose main line goes out quite far (around move 20). Black neutralizes White's threats and plays solidly, although White perhaps could have tried for a little more towards the end.
Game 4: GM Alejandro Ramirez - GM Alexander Ivanov
The opening phase is very interesting, morphing from a Hedgehog to a Symmetrical English to a Benoni structure. White has a comfortable game afterwards, although not a winning advantage. The explosion of tactics starting on move 19 comes from what appears to be just a small Black inaccuracy. White aggressively pushes the passed pawn he wins as a result and leverages other associated tactical opportunities to ram home the point.
Game 5: Sarah Chiang - IM Anna Zatonskih
Zatonskih transposes into a Modern Dutch Stonewall formation by move 6, after starting off with a Slav defense. Her opponent appears unfamiliar with some key positional ideas, such as the importance of not opening the f-file and trying to maintain a knight on e5. Despite this, White manages to stay equal after Black fails to follow up on a few opportunities. In the resulting equal double bishop endgame, Black simply outplays her opponent in an instructive manner.