Barcza system transposes between the Kings Indian Attack, Reti and Catalon lines depending on how black plays. The idea behind it is to try to transpose into the line that provides the greatest practical and theoretical advantage.
Aman Hambleton's (GM, Chessbrah) King's Indian Attack as White, distilled from his rating speedrun into 10 core lines. One universal setup - always 1.e4, then d3, Nd2, g3, Bg2, O-O, h3, Kh2 - meets everything Black plays: e5, Caro-Kann, French, Sicilian, Scandinavian, Petrov.
Aman Hambleton's (GM, Chessbrah) King's Indian Defense as Black, distilled from his rating speedrun into 10 core lines. One universal setup - ...g6, Bg7, d6, Nf6, O-O - answers everything White throws at it: 1.e4, 1.d4, Trompowsky, London, Austrian Attack, Four Pawns, Fianchetto.
The undoubtedly best version of the Dutch, I couldn't find any other Dutch course which covered all of the positions that I see in my games so I made my own with inspiration from GM Arturs Neiksans & HangingPawns YT
I usually play the catalon with ppKpB move order, but it can also be played with a pppBK move order. This course is a study of how sidelines change with a pppBK move order.
I’ve had some trouble with a line in the Slav where the f3 knight can become pinned. I created this study to enable targeted arena sparring to address the weakness.
One of the big down sides of the Catalan is, no matter what move order you choose, you spend a lot of time with black taking you into other openings: KID, Dutch, modern, Slav, QGA, Englund gambit, Albin counter gambit, etc. This course gives some basic lines for catalan and most of that other stuff.
The Vienna Game: Simple & Aggressive (Trimmed 0.1%)
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I found Vienna game an easy yet reliable opening with much less theory compare to other lines, and we will get playable positions, both dynamic and positional. I have played it against Strong GMs with success, hopefully you will enjoy it too!
Lately when playing the Pirc defense against the 150 attack, I actually find myself enjoying castling into the attack and then defending wiht a number of counterintuitive moves my opponent doesn't expect me to find. Once white becomes so over extended, the rest of the gaem is usually pretty easy.
Do you like the Vienna Game? If your opponent responds with Nf6, the Vienna Gambit is probably the most natural way to continue.
But here is another, more obscure gambit.
I am only a low Elo player, and this course is more like a notebook where I write down the main line and other possibility
Enjoy
