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68

That only works in blitz time controls with no increment. If you accept games with no increment you are basically agreeing that flagging is part of the game and sportsmanlike. If you personally find it unsporting then always play with an increment and decline challenges with no increment.


53

It is not a question of ethics, but more about being courteous. Chess is a game where it is impossible to separate the joy of the game from the competitiveness/ego aspect so by declaring a forced win in N moves, you are effectively asking your opponent to resign immediately even though he hasn't seen the forced win yet owing to his lesser faculties/skill ...


47

The official FIDE laws of chess do not know about a queen check. Announcing a "queen check“ might even be considered a case of "to distract or annoy the opponent“ (11.5). Even announcing a "king check“ is not recommended. That’s for tournament chess. In informal games, it is not unusual in some groups to announce a check and a "queen ...


45

Yes. Besides making sense, it's also explicitly stated in the rules of the game: 3.9 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 that square because they would then leave or place their own king in check. No piece can be moved that will either expose the king ...


41

In blitz, time is a major factor in the game, and it is fine to try and win on time. If you used too much time, and your opponent thinks he can flag you, there is nothing wrong with that. It is part of the game.


37

Time is a resource in blitz chess, as much as or even more so than material. If it isn't unsportsmanlike to capture your opponent's material, how is it unsportsmanlike to capture their time? In blitz chess, there is often a time-endgame. Otherwise pointless checks and random-looking moves are part of this endgame. From my perspective, this is part of what ...


35

Can a piece put a king in check even though moving that piece would be an illegal move? Yes. One way to see why this makes sense is to imagine "checkless chess", a game that is just like chess, but you win by capturing the king, not by delivering checkmate, and no one is forced to move out of check. This game is exactly the same as chess except that it ...


32

Really interesting question. I think the following shows that such a situation is sort of possible, depending on how you define the pin: [StartFlipped "0"] [FEN "7k/4p3/8/2KP3r/8/8/8/8 b - - 0 1"] 1... e5 and 2. dxe6 is illegal. The check would go from being stopped by both pawns, to being stopped by neither.


29

No. Some people think it is polite to say 'gardez' to alert a player that the Q can be taken. But no rule says you have to say check nor gardez and in serious games with good players it is not done. This gardez for Qs is just a very informal rule amongst some low level players that I have not seen in actual use for 60 years but have read about as being more ...


27

The majority of the users find that insulting. Is it really insulting to [...] I can answer the question based on this excerpt alone. The answer is yes.


24

waste their time If it's clear that they are able to win within the time they have left, this could be considered bad sportsmanship. However, in those situations the number of remaining checks is usually quite low. win the game on time If that's a possibility, I'd say it's perfectly fine to play on if you're losing on the board. At the beginning of the ...


23

I can think of two questions you might be meaning to ask, given the wording of your question. Maybe neither of these is what you're after, but just in case: 1. Is it possible to castle out of check or even checkmate? Here the answer is no. If your king is in check, then castling is not a legal move. 2. Is it possible to castle while checkmating your ...


23

There are three ways to get out of check. Simply move the king away. Block the check, or place a piece in between the king and the opponent's attacking piece. Capture the piece that's checking the king. All of these cases are dependent on the fact that immediately after you make your move, the king is not in check. Therefore, you may capture the queen ...


23

In a tournament game, you are not supposed to speak at all other than to offer a draw or adjust a piece. This includes saying check. This tends to seep into casual games among more experienced players (I haven't said check in years). For players that do not compete in tournaments at all, I don't think that there is any obligation to point it out. When ...


23

Imagine a variation of chess without the rules about check and checkmate, where a player wins simply when he captures his opponent's king. In this variation, Kxd5 loses the game to exd5. Turns out, that's more or less how real chess works. The objective is to capture the opponent's king. If your king is under attack, you must deal with that threat. If there'...


20

Double check is a fine tactic. An example would be a bishop lined up on the same diagonal as the king with a rook or knight in the way blocking the check. The rook or knight moves giving check to the king and also uncovering the check from the bishop. The king must move since there is no way to block two different lines or take two different pieces at the ...


20

Both recording checks and draw offers are personal preference, and neither is required in your notation. I actually do record both checks as "+" or "++", and draw offers as "(d)". I know I am not the only one to note draw offers as I have friends, who do the same. I also record times. The purpose of the notation is so you, or the arbiter, can play back ...


19

You can find some examples in the following game collection: Games where check is answered with checkmate. Among those games, Nigel Short vs Alexander Morozevich, Russia - The Rest of the World (2002) is the only one that meets the qualification top players. This was a rapid game. The most entertaining example is the following: [FEN ""] [Event "...


19

According to the FIDE Laws of Chess: Appendix C. Algebraic notation C.12 The offer of a draw shall be marked as (=) As with a number of the laws regarding recording of the moves this is not strictly enforced by arbiters. I did once play in a tournament in which a very junior arbiter delivered a short harangue to us players telling us to record draw ...


18

Those are just the rules of the game. You could absolutely try to make the case that moving into check in such a situation should be legal, but playing by those rules wouldn't be chess anymore (it would be some variant). You could also ask why stalemate is a draw and not a win, even though the latter result would make more sense in a real battle. These are ...


18

I will answer from a different perspective: why Racing Kings (RK) has a rule to allow black a chance to draw, and why the same logic doesn't apply to chess. What is Racing Kings (RK)? Background for those unfamiliar with RK: Both sides start with all pieces (no pawns), arranged on the first 2 ranks of the chessboard, white on the right, black on the left. ...


17

You can move your other piece to make your queen attack the king in a normal position such as: 4r3/8/8/2QB1k2/p5q1/3K4/8/8 w - - 0 1 1.Bf3+**[Discovered-Check] (1.Be4+**[Double-check]) But you are forbidden to do so if the piece you move will put your own king in check, such as: 3r4/8/8/2QB1k2/p5q1/3K4/8/8 w - - 0 1 1.Bf3**[illegal-move] Here both ...


15

I would say this is not only insulting but unethical. Chess is a game that is intended to be a test of thought and concentration. It is unfair for a player to disrupt his opponents thought processes by drawing attention to any particular line of play as it may distract him from pursuing his intended strategy. Now you may think that the play is forced from ...


15

Yes, of course he can; you're indeed in check. Imagine if checks didn't exist--then on the next move, if your king hasn't moved, he could just take your king with his rook.


15

There is a rules in chess called Threefold repetition rule. This rule states that you can claim a draw if you are about to repeat the the position for a third time. This subsumes a situation called perpetual check which also leads to a draw. So what you did in your game wasn't a case of extortion or abusing a flaw in the game - it was completely by the ...


14

What you are describing is Perpetual Check: http://en.wikipedia.org/wiki/Perpetual_check It is covered in the rules of chess and the result of such a game is a draw. It is up to your opponent to try and avoid this situation if he thinks he can win. Conversely, if you might lose you should try to get into some kind of draw situation to avoid a loss. ...


13

If it is your opponent's turn to move and none of your opponent's pieces can move other than his king, and the king would be in check on any square it could move to, we would call that stalemate. In case of stalemate, neither player wins – the game is drawn. Here are a few examples: A simple one with just 3 pieces on the board with Black to move: Here, ...


13

The important part is that you and your friend agree on what to say and when. If you both agree that queen check (or gardez) is a nice thing to say, then go ahead and say it. I suggest taking the time before your next game to clear this up. Also, if you play any friends of your friend then ask them too what they prefer. That being said, if your friend want ...


12

The king can capture the enemy queen, as long that does not place it in check from another piece.


12

Your "checkless" chess AI would run into problems with the stalemate rule. It would consider the poaition with white king on a6, white pawn a7, black king a8, a win for White because wherever Black moves his king it will get captured. In standard chess, of course, the position is a draw.


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