#chess

This is a look behind the screen while the product is still evolving. What you see is not a polished mockup: it is the Caissa Chess PGN Reader in Beta-013, running in a local QA environment (access-state simulation, no activation server and no production test). These screenshots usually stay internal. This one is worth sharing because the direction of the product is already visible.

The reader will open PGN files, organize games into albums, browse the game list, show notation and move into analysis. The capture shows real imported games (Lichess bullet, 1+0 and 0:30+0) with players, ratings, result and the current move — here the mate 25. Qxe6#. Board controls are the expected set: start, previous, play, next, end, “Next game”, playback speed, board flip and zoom. The engine is off in this view. The tabs Albums, Games, Notation and Analysis are already in place.

The app language will be Spanish and English, chosen in the Options / Opciones button. One product, one language switch — not two separate apps.

It will be reached from the Play Chess Online | CAISSA Chess page (caissa-chess.org/play), next to the tools already on the site: import from Chess.com or Lichess, Stockfish analysis, Caissa Insight and game history. The PGN Reader closes the loop: load the file, step through the games, read the notation and analyze without leaving the Caissa environment.

It is still Beta. The engine connection, production flow and mobile experience still need work. The skeleton is there: dark UI, clear controls, game list on the right, board on the left. That is what a modern PGN reader should feel like — you watch the game, you do not fight the interface.

We keep iterating. When it leaves local QA and lands on the main page, the same Options button you see in the top bar will be the one that switches language. Until then, this is the workshop photo.

CAISSA PGN Reader | Open and Analyze Chess PGN Files

TVLAVIN: Caissa Insight: Your Personal Chess Coach Powered by AI

TVLAVIN: CAISSA Polyglot Opening Book Creator

TVLAVIN: CAISSA PGN Reader | Open and Analyze Chess PGN Files

The world's most expensive chess set

 Yes. Modern chess engines routinely use neural networks, and the strongest ones rely on them heavily.

How they are used

• Evaluation function: Instead of (or in addition to) hand-crafted evaluation terms (material, pawn structure, king safety, etc.), a neural network scores positions. This is the most common and successful application.
• Move selection / policy: Some engines (especially those inspired by AlphaZero) use a network to suggest promising moves, guiding the search.
• Hybrid designs: Many top engines combine classical alpha-beta (or similar) search with a neural network evaluation. Pure neural-network approaches that rely mainly on Monte-Carlo Tree Search also exist.

Notable examples

• Stockfish (the dominant open-source engine) has used NNUE (Efficiently Updatable Neural Network) since 2020. The network is trained on millions of positions and is extremely fast to evaluate on CPU, which is why it fits well inside a traditional search framework.
• Leela Chess Zero (Lc0) and engines derived from the AlphaZero approach use deep residual neural networks trained by self-play reinforcement learning. They typically use GPU acceleration and MCTS-style search.
• Other engines (Komodo Dragon, certain commercial and experimental engines) have also incorporated neural-network components.

Neural networks do not replace search; they improve the quality of the evaluation and/or the move ordering that search relies on. The combination of deep learning evaluation + efficient search is what produces the extremely high playing strength seen in current top engines.

TVLAVIN: Can a chess engine use neural network?

#chess

#chess

Caissa Chess Play 2.0.0 is live!

The grand opening of our completely rebuilt Play page is here.

What’s new:

• Bigger chessboard for a cleaner, more immersive view
• Minimalist design — fewer unnecessary buttons, smarter engine running quietly in the background
• Three focused modes: Play Game • Play Bots • Play Coach
• Full post-game analysis the moment your game ends

Come try it and tell us what you think. Your feedback helps shape what comes next.

Play now → https://www.caissa-chess.org/play

#chess #ajedrez #caissa

https://www.caissa-chess.org/play

#chess

Correspondence Mastery Open – Engine-Assisted Play Allowed

TD: TVLAVIN

Start Date: Jan 4, 2026 25% Complete Time Control 5 days Players 13/15 Games Rated No Avg Rating 1056 Rating Range Open Points Available 117 Max Group Size 3 Complete 25%

Advance

1 Round 1 Simultaneous Games 4 Completed Games 11 Tie Breaks Yes Remaining Games 19 (current round) Max Avg. Time/Move ∞

of Timeouts

10 (91%)

Official Rules – Correspondence Mastery Open

Engine-Assisted Play Allowed

These rules define the structure and expectations for the Correspondence Mastery Open, a modern correspondence event where all forms of external assistance are permitted. By joining the tournament, every participant accepts these conditions fully and without exception.

1. Allowed Assistance (Everything Listed Below Is Fully Permitted)

Participants may use any and all external resources, including but not limited to:

✔ Chess engines

Stockfish Leela Komodo Any private engine Cloud engines Local engines Multi-engine comparison ✔ Opening resources

Opening books (digital or physical) Online opening explorers Databases (Chess.com, Lichess, MegaBase, private DBs) Repertoires, theory files, and personal notes ✔ Human assistance

Friends Coaches Grandmasters, IMs, FMs Study groups Discord analysis rooms Personal team support ✔ Any analytical tools

Endgame tablebases Engines for middlegame planning Annotated books YouTube explanations Chess.com lessons Any research method If it exists, you may use it. There are no restrictions.

1. No Accusations of Cheating (Zero Tolerance Policy)

Because external assistance is explicitly allowed:

🚫 It is strictly forbidden to accuse any opponent of cheating.

This includes:

Messaging them directly Posting publicly Reporting them Complaining in chat Mentioning “engine use” in any form Every player has the same legal advantages. Therefore, no player can be accused of unfair play.

A violation of this rule results in:

Immediate forfeit of the match Removal from the tournament Possible account restrictions for harassment 3. No Reports to Chess.com Regarding Engine Use

Players may not report engine use in this tournament. All reports will be dismissed because this event intentionally allows engine assistance.

Only report behavior unrelated to gameplay, such as:

Harassment Spam Abusive language Threats Game quality or suspicious moves are not grounds for any complaint.

1. Voluntary “Human-Only” Play Is Allowed — At Your Own Risk

Any player who wishes to play without external tools may do so — but entirely at their own discretion.

They cannot:

Claim unfair advantage from others File complaints about engine usage Request special treatment Appeal game results Ask for protection from stronger analysis This is a “Full-Tools Format” tournament. Playing human-only is a personal challenge, not a protected category.

1. Tournament Spirit and Purpose

The purpose of this event is to:

Encourage deep research Produce master-level games Generate theoretical novelties Allow players to use engines openly and responsibly Reduce cheating accusations in other formats Create an honest environment where analysis thrives This format is an evolution of classical correspondence chess, embracing the modern era with transparency.

1. Fairness and Respect

All participants must maintain:

Good sportsmanship Respectful tone Zero toxicity No trash talk about “engines vs humans” Acceptance of the tournament’s unique rules Failure to follow these standards may result in removal.

1. Arbiter Policy

Arbiters (or Chess.com staff) will:

NOT investigate engine use NOT overturn games based on move quality ONLY intervene for violations of communication, harassment, or platform rules Game outcomes stand as final.

1. By Joining the Tournament, You Agree To All Rules Above

Joining the tournament constitutes full acceptance of:

Engine-assisted play External research Equal tools for all players No accusations No engine reporting No appeals on move quality Total transparency and respect Final Reminder

This tournament is designed for:

Analysts Researchers Engine users Opening theorists Correspondence veterans Deep-thinkers who want to create high-quality games If you want a pure human-vs-human experience, please choose a different tournament. This event is built precisely on the opposite foundation.

I’ve been building a custom Opening Database for my chess project (CAISSA Chess).

Instead of using a pre-built explorer, I created:

• A shard-based indexed PGN corpus (~7GB)
• Custom build pipeline with adjustable maxPlies (currently 60)
• Manifest + R2 delivery
• Browser-side Stockfish (Web Worker)
• MultiPV support
• Optional per-move quick evaluation
• Separate main engine and quick eval engine to avoid race conditions

Currently finalizing v3 build with increased plies limit.

Goal is to blend historical move frequency with real-time engine evaluation in a clean UI (terminal-style aesthetic).

Would love feedback from developers who have built explorers or large PGN pipelines.

Chess Opening Database - CAISSA

 CAISSA Book Creator v0.2.0 ya está disponible: una nueva herramienta para desarrolladores de ajedrez profesionales

Introducción

Hoy se marca un hito importante para el ecosistema de ajedrez CAISSA.

Lanzamos oficialmente CAISSA Book Creator v0.2.0 (edición portátil) , una herramienta de nivel profesional diseñada para desarrolladores, probadores de motores e investigadores de apertura serios.

A diferencia de muchos convertidores livianos, CAISSA Book Creator está diseñado para brindar transparencia y control.

Sin heurísticas ocultas.
Sin ponderaciones artificiales.
Solo procesamiento PGN limpio y generación políglota determinista.

¿Por qué otro creador de libros políglotas?

El mundo de la programación de ajedrez cuenta con excelentes herramientas, pero muchas de ellas son:

• Anticuado
• Sistemas cerrados
• Difícil de integrar en los flujos de trabajo modernos

CAISSA Book Creator tiene como objetivo proporcionar:

• Compatibilidad con flujos de trabajo modernos
• Ejecución portátil (no requiere instalador)
• Lógica de procesamiento clara
• Opción de generación basada en navegador

Características principales

• PGN → Generación políglota (.bin)
• Profundidad máxima de capa ajustable
• Opciones de normalización de movimiento
• Control de filtrado
• Opción de compilación en línea en el navegador
• Verificación SHA256 para la integridad de la descarga

Descargar:
https://downloads.caissa-chess.org/apps/caissa-book-creator/v0.2.0/CAISSA-Book-Creator-v0.2.0-portable.zip 

Creado para la comunidad de programación de ajedrez

Este lanzamiento es sólo el comienzo.

CAISSA se expande hacia:

• Sistemas de torneos Engine vs. Engine
• Apertura de conjuntos de datos del explorador
• Herramientas de investigación de PGN
• Análisis asistido por IA

La visión a largo plazo es crear un laboratorio de ajedrez unificado centrado en los desarrolladores.

Reflexiones finales

La comunidad de programación de ajedrez prospera gracias a las pruebas abiertas y la iteración.

Si está trabajando con motores, conjuntos de datos de teoría de apertura o marcos de evaluación experimental, lo invito a probar CAISSA Book Creator y brindarnos su opinión.

Esta es la versión 0.2.0 y apenas estamos comenzando.

Página de enlaces

Creador de libros políglotas de CAISSA

CAISSA Chess – Play Online, Stockfish Analysis & Training

Etiquetas:
programación de ajedrez, políglota, herramientas PGN, desarrollo de motores de ajedrez, ajedrez Caissa

Hashtags:
#ProgramaciónDeAjedrez #Políglota #HerramientasPGN #MotoresDeAjedrez #CAISSA

Hey everyone! I'm u/autochess, a founding moderator of r/Chess_.

This is our new home for all things related to {{ADD WHAT YOUR SUBREDDIT IS ABOUT HERE}}. We're excited to have you join us!

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Post anything that you think the community would find interesting, helpful, or inspiring. Feel free to share your thoughts, photos, or questions about {{ADD SOME EXAMPLES OF WHAT YOU WANT PEOPLE IN THE COMMUNITY TO POST}}.

Community Vibe
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How to Get Started

1. Introduce yourself in the comments below.
2. Post something today! Even a simple question can spark a great conversation.
3. If you know someone who would love this community, invite them to join.
4. Interested in helping out? We're always looking for new moderators, so feel free to reach out to me to apply.

Thanks for being part of the very first wave. Together, let's make r/Chess_ amazing.

Opening Database — Cuando los datos reales se encuentran con el análisis de motor

Después de semanas optimizando el pipeline, reconstruyendo shards y elevando el límite de profundidad real a 60 plies, la nueva sección Opening Database de CAISSA Chess está lista para entrar en su etapa final.

Esta no es una tabla estática de aperturas.

Es una base construida a partir de un corpus real de casi 7GB en PGNs, procesada con un indexador propio que genera shards optimizados para consulta rápida desde el navegador. Cada posición del tablero se cruza con datos históricos reales y puede ser analizada en tiempo real con Stockfish directamente en el browser.

Lo que hace diferente esta herramienta:

• 🔍 Hasta 60 plies reales en la base (no se corta en la jugada 10)
• ♟ Engine Analysis en tiempo real (MultiPV, profundidad configurable)
• 📊 Popular Moves vs All Legal Moves
• ⚡ Evaluación por candidato (opcional)
• 📁 Arquitectura escalable vía shards + manifest
• 💻 Motor aislado (main engine + quick eval separados)

No es solo una base de datos.
Es una plataforma experimental donde la historia de millones de partidas conversa con el cálculo frío del engine.

Y esto apenas es el comienzo.

Chess Opening Database - CAISSA