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Questions tagged [rules]

Questions relating to the rules of chess

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1 vote
2 answers
63 views

Is the RS method actually a convention? If so, what can be written in it that is not in 16.1 and 16.2?

The RS Agreement is mentioned in paragraph 16.3 of the Code. But in such a context that I want to cry. ... then the Retro-Strategy (RS) convention should be applied: whichever castling is executed ...
2 votes
3 answers
280 views

What are the castling & e.p. conventions, and how are they used?

Castling & en passant are often called "conditional moves". In the chess problem world, we frequently hear about the castling & e.p. conventions. What are these exactly, and how are ...
6 votes
4 answers
4k views

Do the rules of chess state that a Bishop+King can be sufficient mating material?

A famous recent example of this ending happened last year between Carlsen and Firouzja. Here, Firouzja time ran out, so Carlsen won [Title "Alireza Firouzja-Magnus Carlsen, World Blitz Championship,...
6 votes
3 answers
2k views

Does a chess position exists where one player has insufficient material, and at the same time has a forced mate in 2?

I was thinking about the USCF and FIDE rules on flagging when the opponent has insufficient material. I think I came up with a scenario with the USCF-rule where the best move would be to let the clock ...
5 votes
1 answer
514 views

Touch move and capture sequence

When considering the touch move rule, I am still unclear about the legal sequence for a capture. Example, White intends to capture a rook on a8 with a rook on a1 (open file). Does White have to touch ...
8 votes
1 answer
2k views

Touch move rule loophole

When I touch two pieces simultaneously, how will the touch move rule apply? How is this rule used for this situation? I could not find any resources to do with this situation.
2 votes
5 answers
28k views

King facing king on same line or column

Just returned to chess after 40 years (yes I know). I have a memory of being taught that the kings could not face each other on the same line or column. Chess Titans computer game doesn't seem to ...
12 votes
2 answers
2k views

If I accidentally knock over a rook with my elbow while reaching for another piece, do I have to move the rook?

According to the official FIDE rules for over-the-board (OTB) games, does the above description warrant the touch move rule?
10 votes
2 answers
2k views

Is it OK to adjust your opponent's pieces, and what if he objects?

With all the questions lately about pieces being knocked off the board, being forced to adjust a fallen piece, etc., it made me think of this common scenario. Players often adjust more than their own ...
5 votes
3 answers
543 views

Why is this position stalemate?

Why is this position stalemate? I'm new to chess and I played white.
19 votes
4 answers
4k views

Is Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?

According to the Wikipedia article on the Légal trap, in the match after which the trap is named, Légal employed a psychological trick to encourage his opponent to capture the queen, blundering mate: ...
8 votes
2 answers
3k views

When was the last time a chess rule was modified?

I am talking about legal moves and draws, I mean when does every rule about draw and legal move change, like when does en passant, castling change, when does fivefold repetition threefold repetition ...
6 votes
3 answers
4k views

Is castling possible with a pawn promoted to a rook?

I was thinking about some rules and I came up with a really nice question. Is it possible to castle with a pawn promoted to a rook? If the rules are followed-neither the king or the new rook has ...
21 votes
5 answers
5k views

How can you castle legally in Chess960 when the castling rook is on the king's destination square?

According to the FIDE Laws of Chess: 4.4 If a player having the move: 4.4.1 touches his king and a rook he must castle on that side if it is legal to do so 4.4.2 deliberately touches a rook and ...
70 votes
2 answers
17k views

When (if ever) was it a rule that pawn promotion was optional?

I'm reading a very old chess book ("The Chess Pocket Manual" by G.H.D. Gossip, copyright 1894), and I find this passage in it's section on "The Laws of Chess": When a Pawn has reached the eighth ...
7 votes
1 answer
968 views

Is there a Fairy Chess Piece that Combines the Gnurider and Queen?

In fairy chess a Gnu moves like both a Camel and a Knight. A Camel moves three squares in one direction (either horizontally or vertically) and then one square perpendicular to that direction. A ...
1 vote
0 answers
44 views

Tournament director overruling the main arbiter

Spawned from this question. In short, the tournament director shouldn't overrule the arbiter, but then, you shouldn't smoke either. Also, an arbiters decision might get overruled by a special ...
2 votes
1 answer
80 views

Is there any Chess piece that takes up more than one square on the board?

I have seen pieces that can take multiple other pieces at once, but never seen a piece that takes up more than one square.
2 votes
0 answers
88 views

What makes a draw "prearranged"?

A prearranged draw, if proven (how?), will earn the players a -:-. Now consider this situation: Today, big kids tournament by our club/school. Two players from the same school are paired, 1.e4 e5 Draw....
8 votes
3 answers
566 views

Who has the edge in "gg chess"?

These days, "gg" (good game) is frequently what folks say at the end of a game. At major chess events, at the end of a drawn game, the players & arbiter arrange the pieces in the ...
-1 votes
2 answers
625 views

Why don't Hikaru, Fabi & Nepo buy out Liren so the 3 of them have a playoff to face Gukesh? [closed]

Edit on opinion-based close vote: It's most likely. 1 of my assumptions is wrong. I mean to ask which of the assumptions are wrong. However, if none of the assumptions are wrong, then I think this ...
-4 votes
1 answer
67 views

What happens if drawn matches are decided by black wins (if any)? [closed]

In some round robins or swiss, there are score tiebreakers based on black wins, like the 2022 Accentus Chess960 tournament and the 2023 USCC. Never mind those. My question is for knockouts. Obviously ...
-1 votes
1 answer
30 views

What are some cases where a drawn match went to the player w/ more black wins?

In some round robins or swiss, there are score tiebreakers based on black wins, like the 2022 Accentus Chess960 tournament. Never mind those. My question is for knockouts. Obviously this doesn't work ...
2 votes
2 answers
124 views

Can Winning a Game in a First Rated Tournament Result in a Lower Rating than Not Playing?

I'm curious about a specific scenario in chess rating systems, particularly for a player attending their first rated tournament. Is it possible that for an unrated player, winning a game in their ...
34 votes
3 answers
7k views

Should a player be forced to move a piece that he has picked up after a spectator knocked it off the board?

While anyone can answer this, I do have official FIDE arbiters in mind. I am following a discussion on chess.com about the worst way you have lost a game. Someone related this story: This didn't ...
27 votes
3 answers
12k views

How did castling originate?

Castling to me has always seemed like such a huge leap in terms of game play that I've always wondered how it came to be. Does anyone know the history behind how and why castling came to be?
5 votes
1 answer
458 views

How are some FIDE rated tournaments organizing 3 classical games per day?

58th Begonia Open 2024 was a FIDE rated tournament held in March 2024 in Ballarat, Australia. The tournament consisted of 7 rounds and on one of the days there were 3 rounds of classical chess a day. ...
3 votes
1 answer
652 views

How many illegal moves are allowed in Classical, Rapid & Blitz?

As of Jan-2024, I see that 2 illegal moves are allowed in chess and the 3rd one results in a lose of the game by the one who made those. FIDE 7.4b After the action taken under Article 7.4.a, for the ...
10 votes
4 answers
2k views

Why is taking notes that encourage oneself illegal in chess?

In Round 9 in the US Chess Championship 2015 Men, Wesley So (2794) was forfeited by the arbiter in his game against Akobian (2622) since So took notes that were not chess-related but contained "...
-2 votes
3 answers
210 views

How isn't a time management extension cheating / unethical?

An extension was released 3 years ago in 2021Feb: Hikaru and GothamChess Tell You to MOVE (Time Management Extension). After a certain amount of elapsed time, you get notified by a voice of Hikaru ...
0 votes
0 answers
67 views

Ethics of scratch boards in puzzles

Re these questions: would a board for calculating "non-blindfold" help GMs in slow games? Ethics of scratch boards in live games There is a built-in feature of a 'scratch board' in ...
4 votes
4 answers
134 views

would a board for calculating "non-blindfold" help GMs in slow games?

I have often wondered, how would it be if the rules were different and you could calculate on a "non-blindfold" board during slow games. For example, you could picture each player in the ...
5 votes
4 answers
10k views

When is it possible to carry out the "En Passant" manoeuvre?

This manoeuvre is a form of pawn capturing technique. When a player’s pawn jumps two spaces on a first move, that piece can then be taken from the side as the opposing pawn moves into the moving pawn’...
2 votes
2 answers
110 views

Do endgame tablebases only handle legal positions?

The title is my question for now. I also wonder if similar legality concerns may reduce the number of input FENs as checkmates used as input to the retrograde proofing or construction process. In ...
3 votes
1 answer
184 views

How often can the initial position be repeated under FIDE tournament rules?

Recently a game was played where two GMs swapped kingside and queenside knights and then agreed a draw (and got their just dessert): How often can the starting position be repeated in a game without ...
1 vote
2 answers
308 views

Consequences of Missing a Single Game in a Rated Chess Tournament

I am participating in a rated chess tournament that spans multiple rounds, and I have a specific query regarding attendance. Suppose I have played the first 9 rounds of the tournament, but due to ...
6 votes
1 answer
635 views

Handling Illegal Moves by Both Players in a Blitz Game: Rules and Arbiter's Role

In a recent blitz chess game, a situation left me uncertain about the official rules and how they are enforced. Both players, including myself, made illegal moves, but these were not immediately ...
10 votes
1 answer
568 views

Can one make a deal with their opponent over what opening to play?

In official tournaments, are the two players allowed to talk (before or at the start) of a match to compromise on openings, eg. If white is good at the Sicilian but bad at the Caro-Kann and black is ...
12 votes
1 answer
790 views

Is the number of legal chess positions odd or even?

Is the number of legal chess positions odd or even? Two positions are not the same if they differ in castling rights (i.e. whether K or R have actually moved) or en passant capability (i.e. whether ...
4 votes
1 answer
134 views

What are the Rules of Baroque chess?

I want to do an AI project implementing a Chess agent, so can anyone please let me know the Rules of Baroque chess?
13 votes
3 answers
889 views

When has the FIDE rule against bringing the game into disrepute been invoked (if ever)?

In the current FIDE Laws of Chess article 11.1 says: 11.1 The players shall take no action that will bring the game of chess into disrepute. I have heard elderly arbiters fulminating about some ...
6 votes
4 answers
356 views

What would cause FIDE to refuse to rate a tournament which had been correctly registered for rating?

According to this statement from FIDE today: Today, on December 18, the mini-matches featuring GM Alireza Firouzja (Elo 2750) began in Chartres, France - his hometown. This seven-game tournament pits ...
3 votes
1 answer
510 views

What is the result if a player has insufficient material and the opponent plays two illegal moves?

Suppose player X has only a king. Their opponent has played two illegal moves during the game. Is it a draw or does X win?
8 votes
4 answers
3k views

Does 'dead position' consider the 75 moves rule?

In 5.2.2 of the FIDE laws it says: The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal moves. The game is said to end in a ‘...
10 votes
2 answers
3k views

Can the game end in multiple ways at the same time?

We know that a game can't end in checkmate and draw by 50 move rule. The checkmate will take precedence. But just for fun let's ask: is it possible for a game to end in both draw by repetition & ...
4 votes
2 answers
230 views

How early can you resign a game?

Imagine a situation where you are playing in a FIDE-rated tournament. You're at the board but for some reason you don't want to play anymore. Can you resign the game before it even starts, or can you ...
1 vote
1 answer
273 views

Is wearing headphones during chess games against the rules in FIDE and Chess.com?

Recently Vladimir Kramnik accused Hikaru Nakamura of cheating in online chess. He Tweeted : "It is impossible to imagine a player to be allowed to wear headphones during a game of chess." Or ...
27 votes
6 answers
13k views

Why is this a checkmate?

I'm new to chess and I'm confused about a puzzle I was practicing. As you can see my black queen has put the white king in check, but I'm confused how this is possible if a rook is right next to my ...
7 votes
2 answers
2k views

What happens if a player dies at the board? What is the ruling?

What happens if a player dies at the board? What is the ruling? I am interested in both FIDE and/or USCF rules. I seem to recall about 40 years ago, when reading my first copy of the USCF rule book, ...
1 vote
1 answer
116 views

Are there any official rules which govern the announcement of pairings for a FIDE rated tournament?

Are there any specific rules for the pairing announcement, like they have to be announced "x" hours before the start of the next round? Or does it completely depend upon the tournament ...

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