Who is behind this

I kept losing to the same three players at my club

Every one of them had a pattern. The same opening every game, the same collapse under time pressure, the same reply when I pushed on the queenside. I could feel it, but I could not prove it.

So I wrote something that could. Chess Stalker is that tool. No company behind it, just one person who plays at your level.

Ink portrait of David Menéndez
David MenéndezFounder & sole developer · GijónFIDE 1700
Why trust this one

The engineering

Systems engineering first, a software engineering degree on top of it. I wrote the analysis logic, the site and the database queries myself, so when something breaks there is nobody to wait for.

Ingeniero Técnico Informático de Sistemas
Universidad de Oviedo
Graduado en Ingeniería Informática del Software
Universidad Internacional de La Rioja

The security

Matters most for you

It is why the site stores an email address and nothing else, why there is no search history tied to your name, and why payments never touch my servers.

Máster Universitario en Ciberseguridad
Universidad Internacional de Valencia

The teaching

I trained as a secondary school teacher, and it changed how I built this. A number on its own teaches nothing, so every figure here comes with what to do about it on the board.

Máster en Formación del Profesorado, Educación Secundaria
Universidad Camilo José Cela

The chess

FIDE 1700

Club player, not a titled one. I say it because it matters: I built this for the rating range I actually play in, where preparation still decides games and nobody has a second to scout for them.

I compete less than I would like.
Two small daughters, and they win that argument every weekend.

And what I will not claim

Three limits, stated before you pay for anything.

The Twin Bot approximates an opponent’s openings and strength. It is not a replica of how they think.
Analysis quality depends on how many games exist. Under 50 games, treat the profile as a hint, not a verdict.
No tool wins the game for you. This one tells you where to look before you sit down.

Write to me directly

There is no support team to route you through. The address below reaches me, and I answer my own mail.

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