A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

For questions related to (world) records in chess, e.g. the longest game (in moves or in duration), highest obtained rating, longest mate in n puzzle, etc.
The evaluation of a given position
113 questions
PGN stands for Portable Game Notation. This is a file format for storing chess games (both the moves and various header data such as players' names) that is easily read by people while also easy for …
112 questions
Questions relating to castling
109 questions
Questions concerning the overall configuration of pawns in a game, e.g. what pawn structure features should be sought or avoided, when to alter the structure, how to work with one's pieces in a given …
104 questions
Questions relating to the Knight
95 questions
For all questions related to the World Chess Championship: its holders, contestants, history, etc.
95 questions
Notation refers to any formalized method of recording chess games so they can be replayed and shared later. Common notations include algebraic, figurine algebraic, descriptive, and the digital PGN fo…
86 questions
A gambit is an opening where one player sacrifices material - usually a pawn, but sometimes multiple pawns or even a piece - in order to gain some positional advantage, e.g. a lead in development or m…
86 questions
Questions related to techniques for promoting pawns, or the promotion itself.
81 questions
Questions concerning the mathematics of the game of chess, or chess-related mathematical pursuits.
80 questions
Questions relating to check
78 questions
For questions about various time controls. See also the tag time-management.
77 questions
A semi-open defense with a well-earned reputation for producing solid positions that are sometimes a bit stodgy. The usual move order is 1. e4 c6 2. d4 d5.
74 questions
Questions relating to the Bishop.
73 questions
Questions relating to the Queen
73 questions
A blunder is a move that is a mistake that leads to losing material (e.g. a pawn or a piece) more or less without any compensation.
73 questions
Questions relating to well-known chess players.
70 questions
Tablebases are databases that contain complete, exhaustively calculated moves and variations for a given collection of chess positions. E.g. the Nalimov tablebases contain full solutions for all endga…
70 questions
The French Defense begins with 1. e4 e6 2. d4 d5. Black plans to play a solid setup and contest white's center with moves like c5 and Nc6. The biggest drawback to the French Defense is that black's …
70 questions
Universal Chess Interface (UCI) is the interface protocol used by most of the major chess engines.
68 questions
A chess game is said to end in stalemate when the player to move has no legal move and his king is not in check.
67 questions
Questions regarding the written rules, or the unwritten customs, that concern proper behavior in the world of chess.
67 questions
1. e4 is White's most common first move (except at the top grandmaster level). It tends to produce open games.
67 questions
Games played by demonstrably skilled players such as FIDE IMs and GMs, or those of similar strength pre-FIDE.
66 questions
Question relating to sacrificing material in chess
65 questions
Certain games are famous and well known among chess players, e.g. the Immortal game.
65 questions
Chessbase is a popular chess software for saving games, searching game databases and analysing games using a chess engine.
64 questions
Questions relating to the King
63 questions
Questions relating to learning about chess or analyzing positions on the chessboard. Not to be confused with the concept of an "endgame study", a kind of chess puzzle which doesn't have it's own tag y…
63 questions
The King's Indian Defense (or "KID") is a semi-closed opening starting with 1. d4 Nf6 2. c4 g6 3. Nc3 d6. Black develops with Bg7 and O-O and then either e5 or c5 depending on white's setup. The KID…
61 questions
The Ruy Lopez (or Spanish Game) is the chess opening which begins with the moves 1. e4 e5 2. Nf3 Nc6 3. Bb5.
61 questions
1. d4 is one of White's two most common first moves. It tends to produce closed games.
60 questions
Retrograde analysis is the method of deducing information by working backwards from a given position or outcome. This information can be about past positions of the same game, or may contain forward c…
59 questions
A concept in chess that involves targeting one of the opponent's pieces or a construct of them. For example, one can attack the opponent's king or pawn structure.
58 questions
For questions about the lichess.org website. Please note that we are NOT Lichess support; some questions are simply not answerable by us.
58 questions
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