The Theory Tax: Notes from Vietnam's Chess Boards, 2026

Saigon, November 2026.

On move two, he lifted his bishop to g5.

The man across the board had played the Slav Defence for twenty years. He placed his hand on the c-pawn and then stopped. His hand hovered above the board for some thirty seconds, longer than the whole of his previous game. Only four people remained in the room: two players, a referee bent over the scoresheet, and me. The mechanical clock ticked on steadily, until the player with the black pieces reclaimed his pawn and made a move that was in no book he had ever read.

I did not record the position. I recorded the pause.

In the chess halls of Hanoi and Saigon in the closing months of 2026, people learned the game by word of mouth. Foreign opening books could be counted on the fingers of one hand, and their price was quoted in gold. No computers, no databases, no rating table you could look up in three minutes. A club player who wanted 1.d4 and then 2.c4 had to carry an entire library inside his head: the Slav Defence with 2...c6, the Semi-Slav with the 4...c6 complex, the Queen's Gambit Accepted with 2...dxc4, and the Orthodox 2...e6. Four branches, hundreds of lines each, all of them to be memorised before the game began.

That price had a name. In the halls, people called it the theory tax.

Late in 2026, Vietnam's national team was preparing to travel to the Olympiad in Moscow. At that level the theory tax was paid in full; world champion Garry Kasparov had no choice but to memorise. But one level down, where thousands of people sat at boards every evening, where the prize was a pack of cigarettes and the honour was the right to keep your seat, players looked for ways to avoid the tax.

They switched to system openings.

The London System: 1.d4, then Nf3, Bf4, e3, Bd3, c3, Nbd2. The Colle: 1.d4 d5 2.Nf3 Nf6 3.e3, waiting for the e4 break. The Torre: adding Bg5 to pin the knight on f6. The Trompowsky: 1.d4 Nf6 2.Bg5, developing the bishop before the c-pawn. The Richter-Veresov: 1.d4 Nf6 2.Nc3 d5 3.Bg5. Two more eccentric cases sit in the same drawer: the Catalan with 3.g3, and the Blackmar-Diemer Gambit 1.d4 d5 2.e4, a wager the toughest players in the hall still warned each other against.

What all these systems share is a shortage of forced lines and plenty of room for a plan. A player need not remember the nineteenth move of a game somebody played in Europe in 2026. He only needs to know where his pieces belong.

From my experience watching club games throughout 2026, this repeated itself so often that it became a rule: players of system openings rarely win with the position. They win with the clock.

The real value of a system opening lies not in the position it produces, but in the thinking time it takes away from the opponent.

The second move of the Trompowsky is no better than the second move of the Catalan. But it places the opponent in a question he has never prepared for: play ...d5, ...Ne4, or ...c5? Three choices, none of them clearly wrong, and all three cost twenty minutes. Thirty minutes of a man who has never seen this position is worth more than thirty minutes of a man who knows the entire Slav by heart.

That is why these systems survive at club level, and why they almost never appear in elite tournaments. Up there, a player has a week to prepare for an opponent. Down here, he has ten minutes before he presses the clock.

But the story the halls tell does not quite match the story on the board.

People say club players avoid 2.c4 to dodge the heavy body of theory. That is true, but only half true. The Trompowsky and the Torre do not arise from 1.d4 d5 at all; they appear after 1.d4 Nf6, an entirely different move order. And the Catalan, filed under theory-dodging, is itself the system that begins with 2.c4 — precisely the move players claim to be avoiding. The labelling alone reveals that people do not quite understand what they are avoiding.

And nobody has data. Not a win rate, not a game sample, not a single line of statistics showing how often these systems score in Vietnamese club play. All we have are accounts, and accounts always belong to the teller. Whoever sells the medicine calls the disease dangerous; whoever teaches you how to meet the Trompowsky says the Trompowsky is spreading. In Saigon in 2026 that market lived in handwritten notebooks and photocopied sheets passed between clubs, and the seller always said his remedy was the most urgent.

More telling still: the theory tax does not vanish when a player changes openings. It changes shape. Memorisation can be bought, copied, learned in three weeks. Understanding cannot. A player who abandons the Slav for the London still has to know where his bishop will live over the next twenty moves, still has to know when the e4 break is strong and when it is a hole. The difficulty is not erased; it is moved from the page to the head.

At club level nobody called these evening players a golden generation. But the true death of a golden generation comes when we stop remembering it, and here people stopped remembering long ago.

Outside the hall it was already dark. There was no crowd. There never had been. An empty stand still has an echo — you only need to be quiet enough to hear it. That echo is the sound of a game nobody is waiting on, the sound of a loser quietly folding his pieces into the box, the sound of handwritten notebooks passed from hand to hand until the ink fades.

We look for the sound of the stand that year and find our own youth in the noise.

A move can fade with time, but applause in memory never grows old. Generations will pass, and the poem about them will keep being written. What remains to ask lies elsewhere: if a perfect game leaves no memory in anyone, was it ever really played?