3 fold repetition of any position is a draw also.
Any more odd rules?
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Oct 31, 2018
0
#3
Sometimes this one confuses people
In the position shown below the black king and rooks haven't moved. Which statement is true?
A) Black can castle kingside.
B) Black can castle queenside.
C) Black can castle on either side.
D) Black can't castle.
Oct 31, 2018
0
#4
Sometimes this one confuses people
In the position shown below the white rook is pinning the black knight.
Is it legal for the white king to capture the bishop?
A) Yes
B) No
Oct 31, 2018
0
#5
Sometimes this one confuses people
In the position shown below black will move the pawn to e5. After that move which statement is true?
A) Only the f pawn can capture en passant
B) Only the d pawn can capture en passant
C) Either pawn can capture en passant
D) Neither pawn can capture en passant
Oct 31, 2018
0
#6
Unintentional, but all the answers are B.
First question.
Black can castle queenside because the king doesn't move through check (the rook moves through an attacked square but that's ok).
Second question.
White can't capture the bishop because it would put his king in check. You can think of it as which king would be captured first.
Third question.
En passant can be thought of as "capture a pawn that moved twice as if it only moved once." You can also remember "en passant only happens on the 6th rank for white (and 3rd rank for black).
Oct 31, 2018
0
#7
This one sometimes confuses people
What is the earliest move number that white could correctly claim a draw by 3 fold repetition?
Oct 31, 2018
0
#8
2.Qe7, 4.Qe7, and 10.Qe7 are identical positions.
So the answer is that 10.Qe7+ is the 3rd time that position has been reached and white can claim a draw. Remember that the repeated positions don't have to occur on consecutive turns.
(in a tournament games sometimes it's required that you write down Qe7 without actually playing it, stop the clock, and claim the draw).
Oct 31, 2018
0
#9
This one seems to frequently confuse people...
B+N can checkmate, but white must do it before black can claim a draw by 50 moves.
What is the earliest move number on which black can claim a draw in the game below?
Oct 31, 2018
0
#10
The last capture was move 44...Kxf5
You can think of this as move zero.
45.Kd4 is the first half of move one in our 50 move count (remember in chess moves come in pairs)
45...Ke6 is the completion of move one in our 50 move count.
and so on
Therefore on black's 94th move a draw can be claimed (again sometimes the requirement is that you write it down without actually playing it, stop the clock, and claim a draw).
The answer "95" is wrong because that will be the 51st move.
You can calculate this easily by adding 50 to what I call "move zero" i.e. the last pawn move or capture.
Alternatively you can calculate this easily by adding 49 to what I called move one in the above description.
Nov 1, 2018
0
#13
@Stiggling . That second q u shown is quite interesting. I fully agree w/ the rules of chess and understand that the game would be over once the king is taken. Regardless it would still be interesting if players could commit suicide (and would probably be interesting if u could ONLY equalise in the same/next move I.e. the game is declared as a win for opponent if u fail to capture king otherwise a draw via the kings taking each other out)
Thank you, Stiggling! Very interesting. Useful, too. When you say 3-fold repetition doesn’t have to be consecutive, you are referring to repetition of the whole board, right?
Also, I heard someone recently mention 5-fold repetition. What’s that about?
Also, I heard someone recently mention 5-fold repetition. What’s that about?
When castling the rook can move "through check" but not the king. An interesting story about Viktor Korchnoi. He was already a grandmaster when he objected to his opponent castling with his rook "going through chess." He was informed it was legal. He didn't know.
Is this story true? I don't know. Some such stories aren't. But it's a good story.
dantewitt wrote:
...
Also, I heard someone recently mention 5-fold repetition. What’s that about?
Also, I heard someone recently mention 5-fold repetition. What’s that about?
That is the competition rules in FIDE's Laws of Chess. Here it says that a 5-fold repetition is a draw (as opposed to the 3-fold repetition which is only a draw if it is claimed).
BlueKnightShade wrote:
dantewitt wrote:
...
Also, I heard someone recently mention 5-fold repetition. What’s that about?
Also, I heard someone recently mention 5-fold repetition. What’s that about?
That is the competition rules in FIDE's Laws of Chess. Here it says that a 5-fold repetition is a draw (as opposed to the 3-fold repetition which is only a draw if it is claimed).
A rule with a lot of recent history.
Until 2014, neither repetition nor lack of progress were grounds for automatic draw. The players were allowed to claim draw from 3rd repetition, but if neither of them wanted to claim, or noticed to claim at right time and right manner, or were certain enough to risk making the claim - because
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9.5 |
If a player claims a draw as in Article 9.2 or 9.3 he may stop both clocks. (See Article 6.12.b) He is not allowed to withdraw his claim. |
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a. |
If the claim is found to be correct, the game is immediately drawn. |
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b. |
If the claim is found to be incorrect, the arbiter shall add three minutes to the opponent’s remaining thinking time. Then the game shall continue. |
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then the game could go on indefinitely and no one else was allowed to stop the game.
From 1st of January, 2014, fivefold repetition was an automatic draw - but only if it was created by "consecutive alternate" moves. Otherwise still no limit on the number of repetitions - except now automatic draw for no progress in 75 moves.
It is only since 1st of July, 2017, that fivefold repetition is automatic draw under the same conditions that threefold repetition is claimable - same positions regardless of different moves in between.
I know about en passant, castling (on both sides), no castling from or through check, draw after 50 moves without a capture or a pawn move, stalemate, and pawn promotion.