Chess Wiki
Chess Notation and Tools Wiki
FEN, PGN, ratings, clocks, analysis workflows, and practical chess utilities.
Advanced Algebraic Notation in Chess: Meaning and Examples
Reconstruct Advanced Algebraic Notation from a position reconstructed from notation; preserve the state fields and test what the record cannot tell you.
ToolsA Complete Chess Game Analysis Checklist
Analyze a chess game step by step: capture context, replay without an engine, mark critical moments, compare candidates, inspect tactics and strategy, verify, and plan.
ToolsCandidate Move Tracker: A Practical Chess Guide
Use Candidate Move Tracker from Candidate Move Tracker input/output contract; audit the input, output and edge case before trusting the workflow.
NotationCheckmate in Notation in Chess: Meaning and Examples
Reconstruct Checkmate in Notation from a position reconstructed from notation; preserve the state fields and test what the record cannot tell you.
ToolsChess Clock Time-Control Builder: A Practical Chess Guide
Use Chess Clock Time-Control Builder from Chess Clock Time-Control Builder input/output contract; audit the input, output and edge case before trusting the workflow.
NotationChess Engine Centipawns in Chess: Meaning and Examples
Reconstruct Chess Engine Centipawns from the legal-move test; preserve the state fields and test what the record cannot tell you.
NotationChess Rating Vocabulary in Chess: Meaning and Examples
Reconstruct Chess Rating Vocabulary from the legal-move test; preserve the state fields and test what the record cannot tell you.
NotationChess Repertoire Definition in Chess: Meaning and Examples
Reconstruct Chess Repertoire Definition from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsInteractive Chessboard Setup Quiz
Test board orientation, queen and king squares, pawn ranks, and the complete back-rank order with an interactive chessboard setup quiz.
NotationECO Opening Codes in Chess: Meaning and Examples
Reconstruct ECO Opening Codes from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsElo Chess Ratings: A Practical Guide
Understand how Elo ratings estimate expected results, how game outcomes change ratings, why K-factors and provisional systems vary, and how to use rating trends wisely.
ToolsElo Rating Calculator for Chess
Calculate expected score, rating change, and estimated new chess Elo after a win, draw, or loss with an adjustable K-factor.
ToolsEndgame Tablebase Workflow: A Practical Chess Guide
Use Endgame Tablebase Workflow from Endgame Tablebase Workflow input/output contract; audit the input, output and edge case before trusting the workflow.
ToolsExpected Score Calculator: A Practical Chess Guide
Use Expected Score Calculator from Expected Score Calculator input/output contract; audit the input, output and edge case before trusting the workflow.
NotationFEN Active Color Field in Chess: Meaning and Examples
Reconstruct FEN Active Color Field from the legal-move test; preserve the state fields and test what the record cannot tell you.
NotationFEN Castling Field in Chess: Meaning and Examples
Reconstruct FEN Castling Field from castling rights stored in FEN; preserve the state fields and test what the record cannot tell you.
NotationFEN Piece Placement in Chess: Meaning and Examples
Reconstruct FEN Piece Placement from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsFEN Position Editor: A Practical Chess Guide
Use FEN Position Editor from FEN Position Editor input/output contract; audit the input, output and edge case before trusting the workflow.
ToolsFEN in Chess: How to Read and Use a Position
Learn how to read all six FEN fields, decode piece placement, side to move, castling and en-passant data, validate a position, and share it correctly.
NotationFullmove Number in FEN in Chess: Meaning and Examples
Reconstruct Fullmove Number in FEN from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsGame Review Worksheet: A Practical Chess Guide
Use Game Review Worksheet from Game Review Worksheet input/output contract; audit the input, output and edge case before trusting the workflow.
NotationGlicko versus Elo in Chess: Meaning and Examples
Reconstruct Glicko versus Elo from the legal-move test; preserve the state fields and test what the record cannot tell you.
NotationHalfmove Clock in FEN in Chess: Meaning and Examples
Reconstruct Halfmove Clock in FEN from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsIncrement Choice Guide: A Practical Chess Guide
Use Increment Choice Guide from Increment Choice Guide input/output contract; audit the input, output and edge case before trusting the workflow.
NotationLong Algebraic Notation in Chess: Meaning and Examples
Reconstruct Long Algebraic Notation from a position reconstructed from notation; preserve the state fields and test what the record cannot tell you.
ToolsMaterial Count Worksheet: A Practical Chess Guide
Use Material Count Worksheet from Material Count Worksheet input/output contract; audit the input, output and edge case before trusting the workflow.
ToolsMove List Comparison: A Practical Chess Guide
Use Move List Comparison from Move List Comparison input/output contract; audit the input, output and edge case before trusting the workflow.
ToolsOpening Explorer Workflow: A Practical Chess Guide
Use Opening Explorer Workflow from Opening Explorer Workflow input/output contract; audit the input, output and edge case before trusting the workflow.
NotationOpening Transposition in Chess: Meaning and Examples
Reconstruct Opening Transposition from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsPerformance Rating Explanation: A Practical Chess Guide
Use Performance Rating Explanation from Performance Rating Explanation input/output contract; audit the input, output and edge case before trusting the workflow.
ToolsPGN Files: How to Read, Create, and Share Chess Games
Learn the structure of a PGN file, required game tags, algebraic movetext, comments, variations, results, FEN setup tags, import validation, export, and privacy checks.
NotationPGN Movetext in Chess: Meaning and Examples
Reconstruct PGN Movetext from the legal-move test; preserve the state fields and test what the record cannot tell you.
NotationPGN Tag Pairs in Chess: Meaning and Examples
Reconstruct PGN Tag Pairs from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsPGN Validation Checklist: A Practical Chess Guide
Use PGN Validation Checklist from PGN Validation Checklist input/output contract; audit the input, output and edge case before trusting the workflow.
NotationPrincipal Variation in Chess: Meaning and Examples
Reconstruct Principal Variation from the legal-move test; preserve the state fields and test what the record cannot tell you.
ToolsPuzzle Position Builder: A Practical Chess Guide
Use Puzzle Position Builder from Puzzle Position Builder input/output contract; audit the input, output and edge case before trusting the workflow.
NotationStandard Algebraic Notation in Chess: Meaning and Examples
Reconstruct Standard Algebraic Notation from a position reconstructed from notation; preserve the state fields and test what the record cannot tell you.
ToolsStudy Session Planner: A Practical Chess Guide
Use Study Session Planner from Study Session Planner input/output contract; audit the input, output and edge case before trusting the workflow.
ToolsChess Time Controls: A Complete Beginner's Guide
Understand chess time controls such as 10+5, increment, delay, bullet, blitz, rapid, and classical—and choose a clock setting that supports your goals.
ToolsTournament Time-Control Planner: A Practical Chess Guide
Use Tournament Time-Control Planner from Tournament Time-Control Planner input/output contract; audit the input, output and edge case before trusting the workflow.
NotationUCI Move Notation in Chess: Meaning and Examples
Reconstruct UCI Move Notation from a position reconstructed from notation; preserve the state fields and test what the record cannot tell you.
NotationWhat Is a Chess Ply in Chess: Meaning and Examples
Reconstruct What Is a Chess Ply from the legal-move test; preserve the state fields and test what the record cannot tell you.