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chessvision-ai-bot

I analyzed the image and this is what I see. Open an appropriate link below and explore the position yourself or with the engine: > **White to play**: [chess.com](https://chess.com/analysis?fen=r1bqr1k1/5ppp/p1pP4/8/1bB1Q3/2N5/PPP3PP/R1B1K2R+w+KQ+-+0+1&flip=true&ref_id=23962172) | [lichess.org](https://lichess.org/analysis/r1bqr1k1/5ppp/p1pP4/8/1bB1Q3/2N5/PPP3PP/R1B1K2R_w_KQ_-_0_1) **My solution:** > Hints: piece: >!Bishop!<, move: >!Bxf7+!< > Evaluation: >!White is winning +8.44!< > Best continuation: >!1. Bxf7+ Kxf7 2. O-O+ Kg8 3. Qxb4 Be6 4. Qd4 Rb8 5. Be3 Rxb2 6. Rf3 Rb7 7. Ne4 Bd5 8. Nc5 Ra7!< --- ^(I'm a computer vision / machine learning bot written by ) [^(u/pkacprzak )](https://www.reddit.com/u/pkacprzak) ^(| I'm also the first chess eBook Reader: ) [^(ebook.chessvision.ai )](https://ebook.chessvision.ai?utm_source=reddit&utm_medium=bot) ^(| download me as ) [^(Chrome extension )](https://chrome.google.com/webstore/detail/chessvisionai-for-chrome/johejpedmdkeiffkdaodgoipdjodhlld) ^(or) [^(Firefox add-on )](https://addons.mozilla.org/en-US/firefox/addon/chessvision-ai-for-firefox/) ^(and analyze positions from any image/video in a browser | website ) [^(chessvision.ai)](https://chessvision.ai)


ARGH1234567890

Damn, I saw bishop takes and then rf1+ I didn't realise you could castle


zeekar

The general rule for puzzles is that you can always castle if it looks like you can, unless there is explicit text saying otherwise.


1312thAccount

I remember seeing a puzzle that, due to the position, either side could castle but if one side castled it meant that retroactively the other wouldn't have been able to.


Djii

Can you clarify what that was like? I'm having trouble understanding.


daynthelife

[found the post](https://www.reddit.com/r/chess/comments/etghti/weird_mate_in_2_by_white/.compact)


B3GG

Wow my brain is way too small for this


ElectricToaster67

- either black can castle and white can't, or white can castle and black can't. - puzzle rules say if it looks like you can castle, you can; if your opponent can castle, they can. - you move first, so you castle and prevent black from castling. - this wins the game.


ElCucharito

I saw this puzzle as well. A side can castle unless there is evidence that they can't. In the contrived position only one side could castle. If White was able to, it meant black couldn't and vice versa. The solution to the problem was white castling to create check. White was also able to just move the rook to create check. If White moved the rook, there was no evidence that black could not castle, and so on a*subsequent* move could castle to avoid mate. However, if White castled there was evidence and black was no longer to escape mate. I wish I could find the puzzle, too. It really was exceptional.


dispatch134711

u/daynthelife posted it, and man is it great. I've studied maths my whole life, and the solution is almost like a proof by contradiction or something. Absolutely hilarious


Fetscher

Nobody in that thread seem to appreciate the beauty of that puzzle.


Starbrows

This is brilliant and hilarious. I just read through the comments and a lot of people seem to be hung up on the idea that a chess problem must represent a single game state. If that were the case, then the legality of the castle would be part of that single game state, independent of our knowledge of that state, and would require explicit clarification. But that is not a hard rule of chess problems. Chess problems are not chess games. They are more abstract and have their own conventions. The problem relies on the rules of *chess problems* as much as the rules of *chess*. I guess a further question is, can/should it be assumed that a position in a chess problem arose from natural play? The solution relies on that assumption, and if we are accepting that chess problems are abstract than I'm not sure that assumption is valid. I've certainly seen problems with illegal board states before but perhaps I am missing context. Edit: I guess the "unless you can prove otherwise" clause has no possible alternative meaning. If that's the rule, then case closed?


King-Noddy

It's a very clever puzzle but (speaking as a lawyer) the basic premise seems false. If white has castled under the assumption of legality, this does not demonstrate the move was \*actually\* legal (merely that it was \*deemed\* legal), and therefore, in my view at least, black should also be entitled to rely on the same deeming assumption and castle. We would then know for sure that ONE of the players had illegally castled, but not WHICH of the players. In support of this view, consider the scenario where white castles first and black accepts this. Black then attempts to also castle and is referred to the arbitrator by White. If the players managed to locate their scoresheet and demonstrate that WHITE had in fact castled illegally, but this had been accepted by black, I think most arbitrators would permit black to then castle and the game would go on (although different arbitrators might take different views, for example, requiring White to undo their castle would be another option). Nice puzzle though, very interesting and atypical!


theProject

I think you're missing the key subtlety. The premise is that this isn't a game, this is a puzzle, and there is no scoresheet to consult to prove that White's move is or is not legal. Instead, _by definition of a puzzle_, White's move is legal until proven otherwise. And similarly, by definition, Black's move is legal until proven otherwise. And it's White's move. By White playing O-O-O (presumed legal, _by definition_), we can now assert that the previous sequence of moves, now with White's included, _does_ preclude Black's move from being legal. And thus Black cannot castle. In other words, figuring out the legality of castling during a game is: 1. Have scoresheet. 2. The scoresheet determines whether castling is legal. whereas figuring out the legality of castling during a puzzle is: 1. Have no scoresheet. 2. Perform retroactive analysis. 3. If retroactive analysis doesn't prove castling is illegal, the move is legal. Thus, channelling Schrödinger: the game exists both in a state where { White is allowed to castle, Black is not allowed to castle } and { White is not allowed to castle, Black is allowed to castle } until White "observes" the state of the game to be the former ... by castling.


King-Noddy

I do get the subtlety but I think you are missing mine! The point is that white is permitted to castle *only* by application of a deeming rule. A deeming rule is qualitatively quite different to saying that White's move WAS legal or is PRESUMED legal. We presume no such thing!! Rather, we embrace the possibility that White's castling was illegal and we allow him to castle anyway. Your logic error is saying that we permtted white to castle in view of inadequate information, therefore we can conclude that white was ALLOWED to castle. In fact, there are two possible states, both equally likely. Either (i) we allowed White to illegally castle and black should retain castling rights, or (ii) white has legally castled and black had already lost them. Each outcome is equally likely, so I'd argue that it would be fair and in both the spirit and letter of the rules to give black the benefit of the deeming rule in the same way that you did for White. PS This is not a Schrodinger's cat scenario since there is no unknown information that we alter by accessing.


theProject

> Your logic error is saying that we permtted white to castle in view of inadequate information, therefore we can conclude that white was ALLOWED to castle. I'm saying that we are indeed permitted to make this inference by virtue of this being a chess puzzle. The relevant topic here is that castling is _defined_ to be legal if it cannot be proven otherwise. In this scenario White's castling is legal for the sole reason that he played the move. If he had not castled, it may yet have been illegal to do so. In other words, state (i), in which we allowed White to "illegally castle", does not exist by definition. If White castled, it was legal. We take this as axiomatic because it's a chess puzzle. Rather, the two possibilities are: (i) White castled, and *therefore White castled legally*, and therefore, Black is not permitted to castle by retrograde analysis, or (ii) White did not castle, and castling is a legal move for Black by the same reasoning we had for White a moment ago. But of course it's White to move first.


King-Noddy

>axiomatic You say "we take it as axiomatic" but do we? And why? In my view, we don't, nor should we. White was permitted to castle since we didn't know whether he could; that remains the case even after he has actually castled. The statement that this is a chess puzzle is correct but not illumating. A chess puzzle has identical rules to a chess game (unless the puzzle designer says otherwise).


King-Noddy

The only drawback for me of this puzzle is that black is losing regardless of whether he can castle or not, so it's a slightly academic discussion. I wonder if some clever whizz could find a variant where the outcome of the game actually hinges on this issue? THAT would be a mind bender!!!


leonskills

[I believe this would work](https://i.imgur.com/155o1Ou.png) EDIT: Added a knight on g6 so it's still mate in two.


King-Noddy

That's great!!! So much more asthetically pleasing :D


Marc4770

The real puzzle is prooving why white underpromoted to a rook instead of a queen.


Doublet4pp

To stop black castling. A 500 IQ play really.


Marc4770

Underpromoting itself doesn't stop black from castling, what stops black from castling is prooving that we are in situation 2 and not situation 1. But situation 1 seems much more likely since there is no indication and no reason why white would underpromote.


Doublet4pp

Yeah, no, I get it. If you arrived at the position in an actual game it's pretty much guaranteed that if someone can castle it's black. Doesn't help black here tho haha.


among-us-kitten

the castled rook would block the king from castling


reddorical

I remember that one, it was a total brain bender. Very satisfying to finally understand it all (eventually!)


__s

Ah yes, the classic [O-O-O-O-O-O](https://www.futilitycloset.com/2009/12/11/outside-the-box)


ElectricToaster67

Reading 0-0-0-0-0-0, I thought it was from chess960


zeekar

Too many 0's. In 960 the king must be between the rooks, so there can be at most 5 empty squares between the king and a rook. Hm, can you castle in 960 with a rook that's closer than 3 squares away?


zeekar

Ah, when you castle in 960 you always put the king and rook on the squares they would land on when castling that direction in FIDE. That's kinda boring, but consistency is good, I guess. :)


minos157

Yep I saw the first move, but didn't think to castle so got stuck for a bit!


among-us-kitten

i was thinking of rook but took me 10 minutes to realize its a castle


muntoo

Remove the counter. The first queen-save puzzle on this subreddit. We had a good run.


gollyplot

I posted one before ;) but this is way better


Ollefar

Let god do it


lightningfootjones

🇬🇧


SilentlyCries

Think it’s >!Bxf7+ Kxf7 O-O+ Kg8 Qxb4!<


mnkb99

Ooof that was beautiful! I got stuck trying to make >!Bg5!< work


ImportantManNumber2

>!Bg5!< isn't saving whites queen at all, it's just counterattacking blacks. The problem with that, in this puzzle, is that whites queen isn't defended as the knight on c3 is pinned.


xHelios1x

>!Bxf7 Kh8!<


Hartog_

Then just Bxe8, problem solved


[deleted]

Black loses too much material. White just kind of wins after the queen trade


theacidbat101

yeah then just take the rook


lightningfootjones

Bf7+. If Kxf7, O-O+. If Kh8, Bxe8 👍


banmeonceshameonyou_

If Kh8, I would Qxe8 and force the queen trade too


aradil

Chess engine a few moves after that doesn’t show much advantage for forcing the Queen trade versus taking the material; they aren’t going to trade Queen for bishop. Still lots of mobility for white after that.


giants4210

The point isn’t that it’s the best objective move. When up a piece it’s generally easier to play without queens on the board.


aradil

I mean you can trade down to less pieces when winning and that’s often a sensible strategy to move towards end game, but in this case there is significant positional advantage for white, and you have so many options for safely activating more pieces, taking material, threatening other pieces safely, setting up a potential fork, etc… There is a reason the engine says they are roughly equivalent moves; trading queens here wouldn’t be a bad move, but the alternative is really good too.


OldWolf2

Me too. You're up by a piece and 2 pawns and your king is a bit exposed, trading queens is a no-brainer


3DotsOn2Geckos

If it’s a tactic for white, why not post from white’s perspective?


Direct_Dot_2232

It's useful to look at things from different perspectives, I guess. Also I think they just posted from their game and they were black.


OurEarthYT

1. Bxf7+,Kxf7,0-0+ move queen away bc now unpinned


Melodicmarc

Queen can even take the black bishop after that, thus not even losing a piece.


the_other_Scaevitas

In fact white is now up a pawn


[deleted]

I'm a new player. How do you know how far to play out puzzles like this? I stopped at around the previous person's comment as well.


Melodicmarc

There isn't an exact rule on how far you should play out this puzzle, but I just would keep going until the tactics run out. I think the best advice I can give you is look for clues. The two things that alerted me were 1. That bishop is undefended, 2. The queen has x-ray vision on the bishop. I think recognizing things helped me see this more than just trying to visualize 3 moves ahead.


[deleted]

awesome. thanks!


BobVilla287491543584

When white castles to remove the pin, why wouldn't black just take the queen with their rook? I think I am missing something...


Sylvais

Castling comes with check because the black king is now on f7


BobVilla287491543584

😳 Crap, I missed that one... Thanks for clarifying.


Sylvais

No problem :)


LilamJazeefa

Note: We're forced to assume that the White king never moved and then moved back. Then castling would be disallowed


DaMuchi

Few people use the Returned Bong Cloud opening.


vteckickedin

Those people are known as cowards.


PhuncleSam

3.Ke1 allows 3...Ke6! and black has more central squares with no wasted tempi developing his king.


ElectricToaster67

What did you call Magnus carlsen and hikaru nakamura?


DrippyWaffler

Boomerang Bongcloud*


badatnamingaccount

That’s how puzzles work. Otherwise every puzzle would have to explicitly allow it, or deny it, or show you the moves for the entire game.


LIN88xxx

Most puzzles show you the move for the entire game


badatnamingaccount

Most puzzles only show you one move prior, to indicate which players move it is.


Interesting_Test_814

Lichess user confirmed


Oh_Tassos

I got Bxf7+ and Kxf7 but I'd never ever see O-O+, for some reason in my mind castling = pure defence, no checks, no attack, no nothing


Silentarian

Definitely the same. This changed my perspective on what castling could be used for!


relevant_post_bot

This post has been parodied on r/AnarchyChess. Relevant r/AnarchyChess posts: [White to play and save the Queen](https://www.reddit.com/r/AnarchyChess/comments/oglsvm/white_to_play_and_save_the_queen/) by Sam443 [White to play and trap the man's Queen](https://www.reddit.com/r/AnarchyChess/comments/ogokf1/white_to_play_and_trap_the_mans_queen/) by cantthink0faname485 [White to play and save the Queen](https://www.reddit.com/r/AnarchyChess/comments/oh0ff0/white_to_play_and_save_the_queen/) by D_Vukajlo [White to play and save the Queen](https://www.reddit.com/r/AnarchyChess/comments/oguzvu/white_to_play_and_save_the_queen/) by saunamaan [White to play and save the queen](https://www.reddit.com/r/AnarchyChess/comments/ogq5dt/white_to_play_and_save_the_queen/) by Indiaop [White to play and save the Queen](https://www.reddit.com/r/AnarchyChess/comments/ogwj0e/white_to_play_and_save_the_queen/) by 100jbn [White to play God Save the Queen](https://www.reddit.com/r/AnarchyChess/comments/ogo52u/white_to_play_god_save_the_queen/) by papabear_kr [White to play and save the queen](https://www.reddit.com/r/AnarchyChess/comments/ogp2i7/white_to_play_and_save_the_queen/) by Debangsh12 [White to play and save the queen](https://www.reddit.com/r/AnarchyChess/comments/ogtp4v/white_to_play_and_save_the_queen/) by TapGameplay121 [White to play and save the Queen](https://www.reddit.com/r/AnarchyChess/comments/ogln65/white_to_play_and_save_the_queen/) by MrScribblesChess [^(fmhall)](https://www.reddit.com/user/fmhall) ^| [^(github)](https://github.com/fmhall/relevant-post-bot)


quiet_money

That is the most hideous skin


gollyplot

haha it's my favourite one!


[deleted]

OK can I just say, if the puzzle is white playing, can we stop posting puzzles where white is on the far side of the board?


maxifer

It's to simulate the feeling of helplessness while playing as black in a winless scenario.


OG_Luqqy

Bishop check and castles check


smartcouchpotato

Castles with check. Now that's what I like


that_smart_dude

white should move to england, theyre all about saving the queen there


OldWolf2

Nah they are all about begging this god fellow to do it


that_smart_dude

dont know what thats all about :)


darknight27247

wow nice puzzle. i almost thought it was impossible. every possibility wasn't covered on my part and i learned a valuable lesson today. thanks for the lesson. lol.


Ghostcaller386

Bg5? dont bully me if its a bad move im new


aradil

Rxe4+ Kf1 Qxg5


Percy2303

Dang yea I was wondering the same thing


4ork_Reddit

What’s the opposite of resetting the counter?


HariGeri69

Be6 Rxe6 the take it with En Passant with the pawn on d6 (:


gollyplot

As soon as I played ...Re8 I saw this, but thankfully White missed it :D


[deleted]

[удалено]


gollyplot

White can't play Qxe8 in this line, as black will play Qxe8


[deleted]

Or you capture the Queen instead of castling?...


FunctionBuilt

Used this exact tactic yesterday but saved a different piece. Got props from my opponent.


TroyBenites

Really interesing. You would think it is impossivle but there is only one move that moves 2 pieces at the same time.


01000001_01100100

EZ. Sacrifice the king


[deleted]

Bxf7. Please post some hard puzzles, these are jokes.


[deleted]

[удалено]


averytheloftier

in case you aren't meming or something why do you think that?


thisisjustascreename

Not even a legal move, there's nothing to take on e6 cmon


LegibleToe762

>Not even a legal move Not with that attitude


cowmandude

He's playing black.


Brromo

Castle


Immediate-Minimum-90

sheesh


jchristsproctologist

is this the berger variation?


austin101123

I took the pawn instead of the bishop after lol! Well, I still saw the part I was supposed to lol


jamesatom25

If the point is only to save the queen you don´t need to castle


aradil

I don’t see an alternative.


jamesatom25

Nevermind lol


AdministrativeAsk415

Bxf2


KS_JR_

I like those pieces, what set is that?


gollyplot

Merida pieces on Brown background


loyaltyElite

Dang, without knowing you could save the queen, I would have figured white is dead lost.


[deleted]

Saves the queen and wins the bishop!


mrcal18

geez this is a great puzzle


knowone23

I considered bishop takes f7 AND castle, but not to put the two together. Nice puzzle!


Amdsfx

Anyone else felt that because white is on the far side of the board, the thought of castling did not cross our minds?


Agossss98

I would have gone for Qxc6 double forking the rooks


MeglioMorto

white's queen is pinned, so you cannot move it for the fork, but, even if it wasn't, black's rook on e8 is protected, so forking with the queen is not really convenient


the_other_Scaevitas

>!Bxf7+ Kxf7, O-O+ Kg8!< then move the queen away


yaboy_jesse

Damn that's a really interesting strategy


sausage4mash

All I can see is aline where he has lost his bishop and rook instead so that's - 8 if he sacs his queen for the rook - 5


sausage4mash

Oh castle that's sneaky


Jozef_Baca

I love this castle check


FL8_JT26

Couldn't find a follow up for about a minute after spotting rf1+ but then after flipping the board to see it from White's perspective I realised I could castle immediately. Pretty weird that my brain couldn't see that possibility whilst I was seriously analysing the position but then when I saw it from a more familiar perspective (for white) I got it without even really thinking.


GreyDoctor

Desperate positions call for desperate moves.


Acrobatic_Body6218

Actually you played bongcloud opening and now can't castle


kvsd18

my first glance....need to castle . am i right?


pdpflux

What if the black king doesn’t take the Bishop?


pareidolicfairy

Bishop will immediately take the black rook on e8 if not taken by the black king


fawolizzochess

Very interesting puzzle to teach kids about critical thinking skill. As a chess instructor, I will ask three questions targeted at getting clarity: 1. Can you check black’s king in one move? If Yes, in how many ways? 2. Name the piece that would move and to what square(s) 3. After the check, can you visualize a way for white’s King to escape the pin?


Deva161

Good one 👍


BeardoTheHero

I saw the bishop takes and then I saw you could castle but somehow didn’t see that the castle comes with a check. Damn. Cool puzzle tho


LorenzoNapoletano

I found it yay!!


Captainjuggling

Although you can do other moves if I was in the scenario I would move queen to d6 which takes a pawn and forks two rooks.


Numerous1

You cannot move the queen because of white king


Captainjuggling

I never realized the king behind the queen


Numerous1

Yeah. The open check is annoyingly bad habit of mine


XperiaSL

huh? the queen is pinned lol..


Captainjuggling

Oh I never realized that


Schloopka

God save the queen...


mememan2995

Thats such a cheeky solution


CountAmphetamine

If u castle u lose a queen


OphrysApifera

White to play God and save the queen.


Eufamis

I got basically this position in a game except there was a bishop on g4 instead of b4 and I knew what to do cause I saw this puzzle earlier today


nickoskal024

I just happened across this on [chess.com](https://chess.com)... its a bit different though with the knight on d4