Questions tagged [retrograde-analysis]
Retrograde analysis is the method of deducing information by working backwards from a given position or outcome. This information can be about past positions of the same game, or may contain forward content, such as optimal play.
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About how to compose retrograde analysis problems
Are there any books or articles devoted to composing retrograde analysis problems? It seems that you would need some techniques beyond ones for standard problems.
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Creating the current position having the rest of the game
It's a question a friend of mine brought up and I found intriguing.
Let's say you have the records of a game from a certain move to the end, using standard notation (i.e. Qf6).
Either assuming random ...
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I can't figure out how to find tactics
Why is it hard for me to find tactics?
For example, I want to take their queen, but I don't know how can I get to specific back steps, unless I play normally (it would take time).
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Which White piece moved only once?
Here is a chess problem that uses retrograde analysis. I’ve also posted it on the “France-Echecs” chess forum, which is in French of
course, and on my blog.
[FEN "3qk3/3pp3/8/8/8/3PP3/1PP2PP1/...
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What is the result? (Rules + puzzle)
[EDITED to include followup - EDIT 2 to include definition of position]
This is in part a genuine question on the FIDE Laws of Chess, and in part a small puzzle to solve.
Suppose that during a long ...
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Can it be proven that 11. 0-0-0+ is legal in this position?
Because the chess site this was on takes its puzzles from real games and gives the move numbers, potential solvers knew that the following position was reached after exactly 10 moves by each player.
[...
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Are there any legal positions known to be impossible to come to in a normal game? [duplicate]
There are some fairly obvious ways to set up a chess board that cannot possibly happen: both kings simultaneously in check would be one.
There are some positions that seem impossible in a normal ...
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Is there retrograde analysis puzzle like "Point on the incorrectly drawn chess piece"?
Does anybody know a nice chess puzzle, where question states: "Exactly one piece is drawn incorrectly on this diagram, another piece must be drawn on it's position. Find incorrectly drawn piece."? One ...
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How is this position possible in a normal game of chess?
A friend of mine gave me this problem. It goes like this.
In a normal game of chess, the white player checks the black's king with a rook and a bishop as in the following image.
8/8/8/8/8/7k/8/...
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Beautiful retrograde analysis problem by Alexsey A. Troitsky
I saw this beautiful, subtle & accessible problem a couple of days ago, and wanted to share it with you folks. (It's by the ground-breaking endgame theorist who e.g. invented the "Troitsky line" ...
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Problem: reconstruct the game
In the following position, each side has made exactly 4 moves (8 in total).
[fen "rnbqkbnr/pp3ppp/2p1p3/8/4P3/8/PPPP1PPP/RNBQK1NR w KQkq - 0 1"]
I need to find what these moves were.
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About retrograde analysis
Raymond Smullyan wrote some great books with Retrograde Analysis chess puzzles. I know of two, are there others?
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Identify a problem where a potentially winning move draws because of the 50 move rule
I'm trying to recall a particular chess problem. It's related to retrograde analysis. All what I can remember is this: it's an endgame where there is only one way to reach the position, and during ...
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Could a chess engine do retro analysis?
If I took a legal chess position, to what extent could an engine work out the previous moves? [in some other board games such as Othello such game reconstruction is done easily with an engine.]
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