# 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 needs to make retrograde analysis of the given position and find, which from all pieces is drawn incorrectly.

I really would like to find such a puzzle.

P.S. I would rather like to find Old puzzle like this than to see you creating a new one, because:

1. I understand that it is easy to create a simple puzzle like this. But this would be too simple.

2. When you try to create it, it is easy to miss some combination. Meanwhile old puzzles are checked "by time".

But if you really would like to try to create a nice puzzle like this - you are welcome.

• I don't understand what you're looking for. A diagram that, when one piece is replaced, becomes a chess puzzle? Your example is a legal position, so I'm not sure what it's intended to demonstrate (and my Russian isn't nearly good enough to go figure it out at the source site). Jun 5, 2014 at 14:53
• @HenryKeiter, 1. Yes, if I understood you correctly. 2. My diagram is illegal position if I am not mistaken, otherwise please show me any example of 2 last moves. Jun 5, 2014 at 14:56
• Example last two moves: starting position is `"8/8/8/8/8/1kp5/Rn3Q2/KR6 w - -"`: `1.Qxb2+ cxb2+` Jun 5, 2014 at 15:01
• @HenryKeiter, you are right. Thank you. THis is a reason why I don't try to create a more or less interesting puzzle by my own. I corrected the picture, hope not it is not legal position:) Jun 5, 2014 at 15:06
• You'll need something at `a3` as well, or else it's still just `1.Qxb2+ axb2+` from the starting position: `"8/8/8/8/8/pkp5/Rn4Q1/KR6 w - -"`. Jun 5, 2014 at 15:08