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Posted by Eswo 2 days ago

Chess puzzle I found in my dad's old book(ardoedo.it)
164 points | 45 commentspage 2
anArbitraryOne 6 hours ago|
I got it down to one, and then remembered I'm not a great chess player
etothet 10 hours ago||
Seems like a variation of this game called Chess Peace: https://chesspeace.app
smitty1110 10 hours ago||
The solutions that look like a pinwheel are oddly satisfying, that was a fun little exercise. Thanks OP, I needed that diversion.
coarise 4 hours ago||
Pleased to find a good looking solution

    ...Q....
    .......Q
    ........
    ........
    ..Q.....
    ......Q.
    ........
    B.......
edit: Its almost the exact same solution to the one provided lol
coherentpony 10 hours ago||
> The task is to place four black queens and one black bishop on the chessboard so that there is no square not under their attack

> In other words, after arranging the five black pieces, it must be impossible to place the white king anywhere without it being in checkmate.

These two sentences mean very different things in the normal rules of chess. And if you replace the word “checkmate” with the word “check” in the second sentence it still doesn’t mean the same thing as the first sentence.

The first sentence implies that all the pieces must be defended.

Edit: Eh, I guess it depends on how you view the word “attack” since all the pieces are the same colour.

c4kar 14 hours ago||
That was an experience. Thank you
Trufa 12 hours ago||
Mildly related, if anyone want another chess minigame (I did this just in case).

https://knight-queen-game.netlify.app/

neuroelectron 11 hours ago||
I've definitely seen this puzzle before. of course I can't recall where
ra0x3 13 hours ago||
Wait, the instructions are a little ambiguous. I clicked "Solution" and it has the dark-squared bishop on a white square! XD

Should maybe update the instructions to clarify that the dark-squared bishop is not constrained to dark squares.

loganc2342 13 hours ago||
It's a black bishop, but not necessarily a dark-squared bishop. Both the black side and white side in a normal chess game get a dark-squared and a light-squared bishop, and I don't see anywhere that specifies which type this one is. It can be either one depending on where you place it.
sltkr 12 hours ago||
Also if you care that much just mirror the solution horizontally or vertically, and now your bishop is on the white square instead.
danbrooks 13 hours ago|||
The instructions likely mean that the bishop itself is black, not the square that it is on.
dwa3592 12 hours ago|||
that's exactly what happened to me. I ended up spending so much time thinking black bishop can only go to black squares. and agreed this is a bit ambiguous.
maest 11 hours ago|||
You can rotate any solution by 90 degrees, which would toggle the square colour of your bishop, so it doesn't ultimately matter.
fsckboy 8 hours ago|||
>thinking black bishop can only go to black squares. and agreed this is a bit ambiguous

sorry, "The task is to place four black queens and one black bishop on the chessboard" is not at all ambiguous.

NooneAtAll3 12 hours ago||
> The task is to place four black queens and one black bishop on the chessboard

where did you read "dark-squared"?

sdsd 7 hours ago|
I've been playing a lot of Go lately and it's lowkey ruined chess for me. I ended up uninstalling Lichess because I simple don't use it anymore. Nothing against chess, just my personal taste.

My friend code on BadukPop is EGVNY if anyone wants to play together!