Super...

aha. :) nice.

1. O-O# 

buuuuuuuuuuuu...castling mate...LOL

stupid and not realistic puzzle....

I do whish you some divident, although in this economy you may have to think about wich bank you choose.  [This is a note responding Quote #300.]

I wouldn't call it dumb. I think it was fantastic!   [responding to Quote #324]

lloll 

I've lost count of the number of comments which ask - "how do you even know castling is possible ?"

For those of you who like technical 'stuff', there's a simple way of working it out - look at the FEN string for the puzzle. If you click on 'Solution' then a button marked 'FEN/PGN' appears towards the bottom-left of the diagram. Click on that button & a pane opens with the PGN data in it & amongst this is the FEN - it looks like this:-

[FEN "8/8/8/8/4p1p1/4pkN1/7P/4K2R w K - 0 1"]

It's a complete description of all the pieces on the board along with the player who's due to move next (w=White), castling information (K=White/Kingside castling available; Q=White Queenside; k&q=Black etc.), then En Passant (the hyphen means no pawns are E.P.), then the number of half-moves (I think this relates to the 50-move rule) & finally the number of the next move.

So the FEN information clearly shows that Kingside castling for White is possible !

The fact is we all got caught out on this one but at least we should know better next time    

haha!

Ha, brilliant! I didn't even consider castling. No complaints, on the contrary, it wakens up the mind to consider more.

Extraordinarily unrealistic way of getting this right. Overall, a good one.

Yea, this is the most TROLL PUZZLE EVER XD

Sorry mr. Einstein but this happens just inside your head. I doubt in the whole chess history that this position will ever be reached without a castle. And to castle with mate, pfew.

Anyway, I like this puzzle because it beaten me. 

Last

Well since I already posted 3 games in this topic (post #253) where there was a very late castling it is already documented that it can happen in real games. In two of those games the castling happened in move 48 (without a check mate), in the third game the castling happened in move 31 giving a check mate.

***

Want more documentation? Look here:

Paul Morphy vs Alonzo Morphy 1850, (without Queen's rook) ending with 18. 0-0# :
http://www.chessgames.com/perl/chessgame?gid=1238144

Edward Lasker vs George Alan Thomas, 1912,
the game could have ended with either
18. Kd2# or with 18. 0-0-0#
Lasker chose to play 18. Kd2#
http://www.chessgames.com/perl/chessgame?gid=1259009

Lodewijk Prins vs Lawrence Day, 1968, ended with 31... 0-0-0#
http://www.chessgames.com/perl/chessgame?gid=1037399&kpage=1

how on earth am i supposed to know that white didnt castle ???????