MasterInChess
Learn chess openings. Play them. Improve faster.
MasterInChess combines a modern opening system with interactive training:
- Understand openings with clear structure
- Play against MICOS CAP (4 levels)
- Analyze your moves with evaluation and best move
MICOS Sub Groups
The 166 MICOS Sub Groups are one of the cornerstones of mastering chess openings, offering a structured approach to learning.
Tactical Courses by MICOS Opening Groups
Over 100.000 Tactics to solve and learn for each of the Opening Groups. Rating 1600 – 2800 with solutions. Each Database from Real Games increases in Rating. Tactical Courses with Encyclopedia of Tactical Themes.
Master the Endgame - Multiple Courses
Practical Annotated Guide to Rook Endgames – Pandolfinis Endgame Course and 4.500 Essential Endgames to Master. You will be well prepared for any endgame. Read our books to master all endgame positions.
Master the Checkmates to be champ of the game
Every strong move in chess begins with seeing the end of the game.
These puzzles with solution will sharpen your:
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Pattern recognition
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Calculation
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Endgame awareness
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The ability to spot winning chances in practical play
Use our Chess Tools
MICOS CAP – Chess Analysis Program
Play, analyze and improve your openings — all in one board.
Additional tools include:
Rating Calculator, FEN ↔ PGN Converter and more.
Chess Books Library
Enhance your Practical Skills with insights from our Chess Library with 400+ Chess Books. Covering Chess Openings, Chess Players, Tactics, Endgame books and Insights books.
The Official MICOS — Certified and Protected
🔒 MICOS is Copyright Protected
The MasterInChess Openings System (MICOS™) is officially registered and protected under international copyright law.
MasterInChess Openings System (MICOS™) – 2026 Edition.
MasterInChess Openings System (MICOS™) – Sub Groups 2026 Edition.
Every MICOS Code, Opening Group and Sub Group is part of a structured, verified move-order–based classification system designed as a modern alternative to the ECO system introduced by Chess Informant in 1974.
📘Explore MICOS in action with 100 Chess Opening Traps by MICOS – Vol. I:
