A double check is a move in which one moves and gives check, while also revealing a check from a piece behind it. A double check can also be created through promotion and en passant.
Questions tagged [double-check]
6 questions
13
votes
2 answers
Why is offering draw not recorded but giving a check recorded?
In recording a game, one typically does not record offering draws (if yes, how and is it required?) while one does indicate that a particular move gives a check by using + (or ++ for double checks).
I am wondering if this is logical. In fact, it is…
Zuriel
- 8,749
- 6
- 39
- 93
7
votes
2 answers
What is the longest possible sequence of double checks?
The record for the most mutual checks in a legal position is known. But what is the record for double checks? There is one rule-threefold repetition applies. Four criteria exist-promoted pieces allowed and not along with forced, Black defends, and…
Rewan Demontay
- 16,942
- 4
- 65
- 109
3
votes
1 answer
Is it possible to block a double check?
Is it possible to block a double-check, or is your only option to move the king? (I'm trying to code a chess game, to then go on to code a chess AI, and this would really help me)
Melvin
- 133
- 3
2
votes
2 answers
If a pawn promotes to a checking piece while also revealing a check, it is a double check?
I'm writing a chess engine just for fun, and during the validation of movement generation, I found some positions in Perft Results that differ from what my engine is producing.
As an example, take the below position.
[FEN…
Welyab Paula
- 345
- 1
- 6
0
votes
3 answers
Escaping a double check
Escaping a double check
The answer to Is it possible to block a double check? says
Moving the king is the only way to escape a double check. There is no possible other move that will block both checks.
But in the following situation, is it allowed…
Weather Vane
- 135
- 4
-4
votes
1 answer
Has promotion with double check ever happened in a professional game?
Promotion is common in many games, and is sometimes comes with check. But something I have never seen in a game is a promotion that comes with double check like this example illustrates.
[FEN "8/3QPk2/8/8/8/8/8/8 w - - 0 1"]
1. e8=Q++
Has this…
Rewan Demontay
- 16,942
- 4
- 65
- 109