I believe this is called an "X-ray," which is where a piece indirectly attacks or defends a square through another piece. (In other words: something else is in the way. But if that "something" moved out of the way, then the piece would be able to "see" that square.)
In this case, the rook indirectly defends the otherwise unprotected knight through the queen because it controls the same file. And since the queen obviously has to move, the knight is not in any danger.
Ah. Thank you so much. That makes perfect sense. I decided to lock this concept away (even though I simply stumbled upon it) as a future tool and just wanted to 'name' it to help solidify the idea for me. X-ray. Nice!
Thank you, Nathaniel! I'm in there daily doing 75 a day plus on chesspecker.org for woodpecker doing 50 more a day!
https://youtube.com/playlist?list=PLQKBpQZcRycoUWCHk9EY8AFNn4j0CpPWQ&si=MHFwSGsiC6Ha51gz
here’s a playlist, a long playlist
it might help?
Hey nice forum folks!
I don't want to solve this puzzle. I simply want to identify what this may be called. Queen stepped in front of my Knight so it can take it. So I moved the Rook over to stop it. This may not even be a good move but in describing this, it is to PROTECT the piece behind, not get at it to take it Soooo, a block? Nothing? hahah!