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Questions tagged [rules]

Questions relating to the rules of chess

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12 answers
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Why is it illegal to castle with both hands?

I was watching the match between Ian Nepomniachtchi vs Hikaru Nakamura and Nakamura used both hands to castle. Why is it illegal to castle using both hands? What's wrong with that?
tah's user avatar
  • 1,131
89 votes
7 answers
25k views

When is castling possible?

Is castling possible if any of the squares involved in the castling are under attack, or is this a problem only if the squares moved through by the king are under attack and not the ones moved through ...
Binoj Antony's user avatar
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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 ...
patbarron's user avatar
  • 3,684
57 votes
3 answers
25k views

Can a piece pinned to my king put the opponent's king in check?

I was playing a game with a friend online. A situation came up where he put me in check with his bishop, and I moved my rook to block it. His king was on the g file and my rook was on g2. The website ...
ken's user avatar
  • 581
48 votes
8 answers
12k views

What are pros and cons around banning castling?

Vladimir Kramnik has proposed on chess.com that castling be banned for the good of the game. What are the kinds of objective points that might be made for & against this idea? Based on these, do ...
Laska's user avatar
  • 13.1k
46 votes
4 answers
15k views

Arbiter ignored cheating, and I signed the scoresheet. Did I lose my right to object?

I am currently playing in an ELO tournament. Today, while I was playing, my opponent occasionally got up and walked around. At first, I did not care much. Then, I realized that some people were ...
padawan's user avatar
  • 1,110
44 votes
2 answers
47k views

I made an illegal move. What happens?

Especially in blitz or bullet games, it is possible that a player makes an illegal move, for example castles through check. If the opponent does notice the illegal move, then as far as I know the ...
Armen Tsirunyan's user avatar
42 votes
1 answer
11k views

When was it possible for a player's king to be attacked by 3 of the opponent's pieces?

According to the current FIDE Laws of Chess: 3.9.1 The king is said to be 'in check' if it is attacked by one or more of the opponent's pieces, even if such pieces are constrained from moving to ...
Brian Towers's user avatar
  • 99.4k
36 votes
2 answers
27k views

Is taking the opponent's king an illegal move?

In competition blitz games, making an illegal move and then pressing the clock forfeits the game if the opponent claims the illegal move as long as they do not make a new move, as a new move would ...
Pep's user avatar
  • 1,354
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 ...
PhishMaster's user avatar
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33 votes
5 answers
17k views

Game ended with a handshake

In a amateur game, black offered a handshake and white shook hands with him and neither spoke any word and the game ended. Later they had a dispute whether the game is a draw or a win for white. Black ...
Zuriel's user avatar
  • 9,101
33 votes
7 answers
6k views

How should an arbiter handle copying moves from another game?

In 2004 the British illusionist, Derren Brown, despite being a very poor chess player scored +4 -3 =2 against 9 strong chess players including scoring 2/4 against 4 grandmasters in a simul. Of course ...
Brian Towers's user avatar
  • 99.4k
32 votes
4 answers
200k views

Is it possible to checkmate with knight and king against king?

I would like to clarify two things: Is it possible to checkmate with only a knight and a king against a lone king? What will happen when one side has a king and knight and the other has just a king, ...
BlueBerry - Vignesh4303's user avatar
32 votes
4 answers
4k views

When capturing en passant, is a position possible such that there is a pin over the square of the taken pawn, rather than the taking pawn?

I am trying to write a simple chess program, and as part of this I am writing methods to find all valid moves. I can detect pins and have no trouble leaving out the moves that would result in the ...
11684's user avatar
  • 1,296
32 votes
2 answers
97k views

What is the correct pawn promotion procedure?

This may be a frivolous question, as I believe that most chess players are good sportsmen, but I was wondering: what is the technically correct procedure for promoting a pawn to a queen? Do you ask ...
firtydank's user avatar
  • 5,785
31 votes
6 answers
4k views

Rules: en passant and draw by triple repetition

A question of rulebook pedantry: One can claim a draw when the same position occurs the third time, the same player having the move. Two positions are not the same if the earlier allows a capture en ...
thb's user avatar
  • 4,569
28 votes
1 answer
13k views

When en passant is the only legal move

Consider the following position: 8/7p/5K1k/8/7p/7P/5PP1/8 w - - 0 1 1. g4 hxg3 In the above postion, White plays g2-g4. The only legal move is hxg3, en passant. I heard someone say that since the en ...
Andrea Mori's user avatar
  • 1,184
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 ...
Sandrine Lorin's user avatar
27 votes
4 answers
34k views

Why is castling through and out of check prohibited?

Why is castling disallowed when the king is in check or when the square the rook will be placed on is under attack? What is the rationale behind this ruling?
Alexandros's user avatar
27 votes
6 answers
12k views

What is sufficient mating material?

The FIDE chess rules describe that "The game is draw when a position is reached from which a checkmate cannot occur by any possible series of legal moves" (FIDE rule 9.6). This rules is sometimes ...
Morten Zilmer's user avatar
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?
blunders's user avatar
  • 4,147
27 votes
3 answers
24k views

What are the rules of Quantum Chess?

The game Quantum Chess, as seen in the video where Paul Rudd defeats Hawking, has no "set of rules" written down. You either have to do the in-game tutorial, watch a video on the game and pick them up....
Aric's user avatar
  • 2,091
26 votes
9 answers
14k views

Must one say "queen check" before capturing a queen?

I was playing a friend and I took her queen. She said that I didn't say "queen check" beforehand. I have never heard of this. Is it a rule?
Sean Malcolm's user avatar
25 votes
3 answers
5k views

Should you let your opponent know if they have forgotten to press their clock?

I'm in two minds here. The good sportsman says you should always let your opponent know (maybe limited to once per game). The more hard-nosed part of me says that managing the clock is part of the ...
AndyM's user avatar
  • 1,073
25 votes
1 answer
6k views

What happens if you touch a piece that cannot move?

I heard that in formal games you have to move the piece that you touch first. What if the piece cannot move, as in there are no legal moves that involve that piece? What would happen in that ...
user30315's user avatar
  • 271
25 votes
5 answers
8k views

Is it a draw by insufficient material if the board is K vs K, N & N?

It isn't possible to force checkmate with King vs. King, Knight & Knight. A checkmate position, however, is still possible to achieve, so does that mean the 50 move rule applies, or does ...
james82345's user avatar
24 votes
9 answers
17k views

Is rotating a pawn so that it faces a different direction and then moves in that direction technically permitted according to the 2018 FIDE Laws?

While browsing the Chess and Puzzling Stack Exchange sites, I've come across several instances where people have found loopholes in the rules of chess, causing these loopholes to be patched out ...
Magma's user avatar
  • 439
24 votes
3 answers
5k views

Running out of time before playing a forced move that would draw the game

What happens if a player runs out of time before playing a forced move that would end in a draw? I suspect it is a loss, but it would be fair to be a draw. 7K/6P1/8/8/8/8/1k4p1/8 b - - 0 1 1... g1=Q ...
Chaotic's user avatar
  • 351
24 votes
3 answers
7k views

Is this an incorrect draw by chess.com?

Is this an incorrect draw by chess.com? I just played a game on chess.com with the final position as below (I am black): [FEN "8/8/2b5/7P/8/2k1N3/5PP1/6K1 w - - 0 59"] My opponent's time ...
callum's user avatar
  • 351
24 votes
1 answer
6k views

The illegal moves in Carlsen-Inarkiev

In the first round of the World Blitz Championship in Riyadh. Magnus Carlsen played Ernesto Inarkiev and the game ended strangely. [FEN ""] [StartPly "53"] [Event "World Blitz ...
user1583209's user avatar
  • 20.8k
23 votes
5 answers
7k views

Should an arbiter claim draw at a K+R vs K+R endgame?

I was asked for first time to help at a non federated tournament for kids to arbitrate their games, played at 30 minutes with no increment time. It was a scholar tournament and they made mistakes as ...
user avatar
23 votes
4 answers
50k views

Can a pawn put a king in check?

I am only an amateur player, but have been playing for many years. Every now and then I come across people who are adamant that a pawn cannot put a king into check. The last person who I discussed ...
going's user avatar
  • 331
23 votes
2 answers
10k views

I was playing a tournament and some kids were talking about the game in a foreign language

I was playing and I am pretty sure that my opponent was talking about the game with his friend in another language. I don’t speak the language, but you can tell. What should I have done?
user avatar
23 votes
3 answers
6k views

Is it legal to play a move without hitting the clock?

In the game Andrey Esipenko - Nihal Sarin (2018 World Blitz Championship), after 7. Qb3 c4 8. Qc2 Sarin plays 8... Bf5, and before he hits the clock, Esipenko plays 9. Qc1, but since Nihal has not ...
Wais Kamal's user avatar
  • 3,070
23 votes
2 answers
3k views

Is it permitted to stare at a blank chessboard during a tournament game?

Long-winded Motivation I have recently noticed during my own tournament games that I am not infrequently closing my eyes, or at least looking away from the board, when engaged in in-depth calculation ...
ETD's user avatar
  • 23.5k
22 votes
8 answers
11k views

Can a player in check win, by checkmating the opponent, while not getting themselves out of check?

Consider a player who is in check. Suppose they can make a move that would checkmate the opponent, but would not stop themselves from being in check. Would that be a legal move? For example, in the ...
user32279's user avatar
  • 245
22 votes
5 answers
7k views

What stops me from pumping up my rating by playing a 200 game match against a much weaker (>400 point difference) player?

This question is inspired by this extract from a question about minimum rating gain: One of the top 10 players in the world (say Magnus Carlsen), wants to increase his rating to 3000. He has a good ...
Brian Towers's user avatar
  • 99.4k
22 votes
3 answers
5k views

Am I allowed to call the arbiter on my opponent's turn?

My opponent, in their turn, was distracting me making annoying sounds. However, the arbiter said that I should wait until it's my turn when I called them. Is this correct?
double-beep's user avatar
  • 4,350
22 votes
4 answers
4k views

When and why was the notation changed from descriptive to algebraic?

When I was young I used to play chess with the the old form of notation KB<number> (King Bishop square number), even books used to have the same notation, then later found that everyone was ...
Binoj Antony's user avatar
  • 3,371
22 votes
5 answers
1k views

How quickly must a move be completed?

I was playing in a tournament once, during a sequence of captures, my opponent could recapture my Knight about 4 different ways. He just removed it and carried on thinking. What should I have done?
AndyM's user avatar
  • 1,073
22 votes
1 answer
8k views

Is there a specific penalty for intentionally damaging chess pieces or the board?

If a player intentionally damages a chess set (e.g. breaks a piece in two, cracks the board, etc.), is there a specific penalty under FIDE rules? I'm not talking about moving pieces around ...
Robert Columbia's user avatar
22 votes
2 answers
7k views

A player falls asleep during the game and his friend wakes him -- illegal?

I witnessed this: a player who burnt the candle at both ends fell asleep during the game and his friend woke him up. His opponent vehemently objected. How should this have been handled? I do not ...
releseabe's user avatar
  • 775
22 votes
1 answer
20k views

Why is it illegal to move into check?

In chess, it is against the rules to move into check, or to not move out of check. But why? Obviously, if you went against this rule, you'd immediately lose. But it seems strange to make it illegal to ...
Winston Ewert's user avatar
22 votes
2 answers
3k views

The history of the 175-move draw rule

The U.S. Chess Federation piloted a 175-move draw rule in the fourth edition of its Official Rules. This interesting rule ended a game automatically after 175 moves, whether or not either player had ...
thb's user avatar
  • 4,569
21 votes
5 answers
5k views

Why does a touched piece not have to move in online play?

There is a rule of playing the game of chess that a touched piece of one's own should be the one to move. I have always been taught by professional trainers from early childhood that this is the ...
MichalRyszardWojcik's user avatar
21 votes
9 answers
66k views

Why is the king powerless and the queen powerful?

Historically, real kings were powerful (Alexander the Great, Napoleon Bonaparte etc.) and women were powerless. The game of chess began in Asia, some say, and the women were definitely powerless there....
Lynob's user avatar
  • 5,784
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 ...
Brian Towers's user avatar
  • 99.4k
21 votes
3 answers
3k views

Ambiguity in notation resolved by +

In the board position both knights can move to e4. To distinguish which knight moved one would normally write Nce4 or Nfe4. However in this special situation only Nce4 is check. Would it be ...
user1583209's user avatar
  • 20.8k
21 votes
2 answers
8k views

Why can't the king castle in this position?

In a video I'm watching (requires register), it has this setup. [FEN "r3k2r/pp1qn1pp/2p2p2/8/3P4/5N2/PP2QPPP/2R1R1K1 b kq - 0 1"] [startflipped ""] The instructor says: The king ...
garci560's user avatar
  • 685
21 votes
1 answer
3k views

Is there a "touch-promote" rule?

When a pawn is moved to the promotion square, can one change one's mind about what piece to promote to? Say I: Push a pawn to the promotion square Remove it Grab an additional queen (do not yet place ...
B.Swan's user avatar
  • 3,498

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