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.
Questions related to the Norwegian Grandmaster and current World Champion Magnus Carlsen.
Games played by demonstrably skilled players such as FIDE IMs and GMs, or those of similar strength pre-FIDE.
Questions concerning the mathematics of the game of chess, or chess-related mathematical pursuits.
Correspondence chess was traditionally played using postal mail, nowadays it's more common to use dedicated servers. Time limits are usually measured in days.
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…
Endgames where each side has a king, a rook, and possibly some pawns
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…
For questions about the Alpha Zero chess engine, currently the strongest chess engine there is, using artificial intelligence rather than minimax algorithms.
The chess pieces have been assigned point values to serve as a general guide as to their relative worth.
a standard notation for recording a particular chess position, including the location of pieces, which side is to move, what castling rights are available, etc.
Questions dealing with how to defend against attack, and how to choose moves that are defensive in nature. Note 'defensive' does not mean passive.
The pawn endgame arrives at the end of the game when there are only pawns and kings on board. The play focuses on trying to promote a pawn or preventing an opponent from promoting a pawn.
Questions about the United States Chess Federation. The non-profit governing organization for US over-the-board chess.
a timing device used to keep games moving. When a player's time runs out, she faces some penalty, frequently the loss of the game. For questions about time controls or time management…
the ability of a chess player to calculate variations in a given position.
Best practice (http://en.wikipedia.org/wiki/Best_practice) is the best way of doing something or the recommended way of doing something in a high-quality manner.
The practice of putting something together before a chess game or tournament into a state where it is ready for action. Preparation is usually used in reference to openings, as one can "prepare an ope…
For questions about annotated chess games and the symbols used when annotating chess games.
Questions concerning cheating in various forms, for example using a chess computer in tournaments or throwing a game.
For questions about the lichess.org website. Please note that we are NOT Lichess support; some questions are simply not answerable by us.
For questions about algorithms used in computer chess software.
a variation of the Sicilian defense. This defense is characterized by the moves 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.Nxd4 Nf6 5. Nc3 a6.
Garry Kasparov was the World Chess Champion from 1985 to 2000. He is often cited as one of the strongest players in the history of the game, if not the strongest.
the chess opening characterized by white's opening move 1. c4.
Viswanathan Anand was FIDE world champion 2000-2002 and undisputed world champion 2007-2013.
the opening that begins with the moves 1. e4 e5 2. f4, an aggressive sacrifice less popular today than in chess' romantic attacking era.
a chess variant in which the positions of the pieces are decided by lot. The point of Chess960 is to stress understanding and calculation, not memorization.