Questions relating to check

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2
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2answers
107 views

Is it true that at any time only one piece can put king in check

I am writing a simple chess game in which I have to determine the end game conditions. My algorithm requires the piece that is putting the opponent king in check, and checks the following: King ...
-3
votes
2answers
105 views

Discovered check when winning [duplicate]

Is it ok to put your own king in discovered check as you take the other king? (Does the taking of the other king even count as a move, or is the checkmate the last move?) Edit: When thinking about ...
1
vote
0answers
49 views

Has anyone ever (beautifully!) escaped check with checkmate? [duplicate]

I was wondering if this beautiful situation has ever happened in a real-life game, especially in a competition. Has anyone ever escaped check with checkmate? That is: has anyone ever, after being ...
1
vote
3answers
96 views

why is the definition of check not circular

If you want to determine whether a player is in check I think you would: 1.1) determine every legal move of the opposition; 1.2.) determine whether such a move threatens our king (i.e. could 'take' ...
0
votes
3answers
126 views

Minimum sets of pieces required for checkmate?

What are the minimum sets of pieces required for checkmate when the opponent has no other piece that the king?
2
votes
2answers
97 views

Chess challenge #8: British knockout championship

The British Knockout championship is taking place now as a warm-up to the London Chess Classic that starts this Friday. There have been very interesting games (especially the ones played by Nicholas ...
2
votes
4answers
1k views

What happens if a player mistakenly thinks they have been checkmated?

A quote from Wikipedia: The objective is to 'checkmate' the opponent's king by placing it under an inescapable threat of capture. Suppose two players (A and B) play the game using the old ...
0
votes
1answer
60 views

Need to say check if we are giving [duplicate]

I want to give check to black and is it necessary to say check to other player?
1
vote
2answers
263 views

Moving a piece out of the way for check

I was recently told you cant move a piece out of the way of a second piece to allow the second piece to put the other player in check. Example- I have my queen, my castle and their king in a row. I ...
1
vote
2answers
210 views

It's not check but the next move is checkmate

I have 5 pieces left and my opponent only has his king. It is my opponent's turn and his king is not in check but everywhere his king moves is checkmate. Who wins?
3
votes
2answers
212 views

Theoretical limit for the number of consecutive checks?

The known record for the longest sequence of consecutive checks in a legal position without promoted pieces, is 37. See http://timkr.home.xs4all.nl/chess/check.html Is there a theoretical limit ...
1
vote
1answer
92 views

About unusual forced mates

Are there 'legitimate' chess positions were say white can force a mate by sacrificing 4 of its pieces in succession one after the other? Can this be done even if white has less material than black?
10
votes
2answers
2k views

He has two queens. I have one. Is it proper chess etiquette to check him non stop just to avoid losing?

I am losing a game. My only option is to check my opponent non stop. I have no chance to checkmate him. I am only hoping to force a draw. Is this proper chess etiquette?
-1
votes
2answers
123 views

Kings and check

Is it ever legal for a king to put the other king in check, even if after the king is taken by the opposing king, the king doing the taking puts himself into check?
1
vote
2answers
282 views

Can a rook put an opponent's king in check as a result of castling?

Earlier in my game I had moved my king 1 space to right of its original position. Later in the game, after my opponent castled he placed his rook correctly which resulted in the rook being directly ...
10
votes
1answer
6k views

When you check someone, do you have to say “check”?

Yesterday I was playing with a friend, I was almost out of time, he checked me, didn't say anything, I didn't see the check as i was in a hurry to make my move. And I was mated. Computers don't let ...
2
votes
3answers
192 views

Help with discovered checks

I'm new to chess and I've found that while certain tactics come relatively easily to me(double fork), certain others are quite harder. I've been missing out on a lot of opportunities to take ...
4
votes
5answers
808 views

Can the King be attacked by a pinned piece?

A computer chess game does not permit moving the white King to d2 presumably because it's attacked by the black Knight which I suspect is correct, but the Knight can't actually attack that square ...
14
votes
12answers
2k views

Is it ethical to tell your opponent how you are going to checkmate him?

I play online chess, 3 days per move and i like to tell my opponents how i'm going to checkmate them, if they will never win, so that i won't waste time continuing the game. And I like to be told if i ...
3
votes
1answer
308 views

Is the king actually in check if the attacking piece cannot be moved? [duplicate]

Black was in a position to take a white bishop with the king. The white bishop was protected by a white knight. However, if the white knight was moved it would expose the white king to the black ...
4
votes
3answers
27k views

Can the king capture his attacker?

Can the king get out of check by capturing his attacker? For example, if the queen comes right in front of the king, can the king capture the queen, or must another piece capture the queen?
9
votes
3answers
3k views

Is it possible to castle while checkmate?

I am new to chess gaming; please answer this for me: Is it possible to castle while checkmate? Thanks in advance.
13
votes
3answers
5k 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 ...
6
votes
1answer
180 views

Yusupov - Spiridonov training question

One of the lessons on the Chess.com site uses the Yusupov - Spiridonov match, with Black to play after 1.Nf6+: [fen "5rk1/pb3p1p/1pr5/8/2P1p1N1/qPQ1P3/4B1PP/3R2K1 w - - 0 1"] 1.Nf6+ The "correct" ...
10
votes
3answers
13k 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 ...
44
votes
5answers
4k 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 ...