12913 Players currently online!
Man vs. Machine - good luck!
Turn-based games at any time!
Vote for the best move to win!
Do you have what it takes?
Backgammon, Yatzy, and more!
Sharpen your tactical vision!
Get advice and game insights!
Learn from top players & pros!
View millions of master games!
Your virtual chess coach!
Perfect your opening moves!
Test your skills vs. computer!
Find the right private coach!
Can you solve it each day?
Bring it all together!
Beginners, start here!
Make friends & play team games!
News from the world of chess!
Search all Chess.com members!
Find local clubs & events!
Who's the best of your friends?
Read what members are saying!
I found two problems that are identical, except for the FEN notation on one is (probably) incorrect. One allows for castling, while the other one does not. I could not find the game itself in any databases to verify this though.
The two tactics are #0020871 (The seemingly correct one) and #0024504 (The one that does not account for castling)
The ability to castle does not change the correct line of the tactic, only makes the second best line able to hold a draw. Thanks for making an amazing site!
u da man, big dog.
Also problems 0021425, 0022065, and 0025410 are all the same. Credit to Igor Randjelovic for finding them. Problem 0021425 seems to have the best information in the source data. It includes the players names and the event.
Beyond the specific problems you point out, no one running the site has yet to answer my simple and more fundamental question of why castling options are not given when you work a problem (as they are at chesstempo, e.g.)??
There is actually a really crappy problem on TT that the answer is castling queenside, but there are hardly any pieces left on the board. Just a nasty trick of a puzzle. It seems like it would make sense, and I have honestly tried castling on a problem, but since it was not an option, was allowed another guess.
lost game b4 it started
by AussieRookie a few minutes ago
Popular song lyrics 🎶 that best describes chess moments 💥
by AussieRookie 7 minutes ago
CHESS BOOKS WILL THEY IMPROVE YOU OR ME?
by fiolmattias 9 minutes ago
by uscftigerprowl 10 minutes ago
8/30/2016 - All Things Are Connected
by lasal2 10 minutes ago
Using the knight
by CrimsonKnight7 20 minutes ago
by balajiarunachalam 40 minutes ago
White to move and draw
by n9531l 40 minutes ago
what is kasporavs strength right now?
by AussieRookie 41 minutes ago
Chess.com's Weekly Study: August 28th 2016
by n9531l 42 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2016 Chess.com
• Chess - English
Try the new Chess.com!
We are working hard to make Chess.com available in over 70 languages. Check back over the year as we develop the technology to add more, and we will try our best to notify you when your language is ready for translating!