My favourite chess problem
Many years ago, searching for the Internet over chess problem, I bumped into a very interesting piece.
Find it on the bottom as a FEN row, clicking on it the board will also appear.
The task is: white mates in one!
Can't be too hard, I thought, but scrolling over the possibilities the solution just didn't come up.
I check everything once more, then again, and again, and once I found another way that was hidden for me before. The solution also hid there. It became my favourite chess problem then, but of course, it's true, there are many many beautiful problems out there.
This was the first problem I submitted to the server. Some players can solve it, some don't. Some believe there is no valid solution.
So, check this problem if you want. And enjoy.
The following list contains all the stories gathered from here and there.
Click on any of them.
Saying the truth, mis-writing a move in correspondence chess can be fatal for the game.
But it depends, if the miswritten move is still valid or not fully valid. For example if the check mark (+) is missing, our opponent can reject the move, and can send it back to us for correction.
But if we have two knights, one can move to e4 and the other one can move to e5, mis-writing 12.Ne4 to 12.Ne5 can be fatal, and there is no way to proof we wanted to move the other knight.
This is a problem, that can be solved in server based correspondence chess, that this club offers.
By default the server is very indulgent in accepting moves, it accepts invalid moves if they are still unambiguous, adds check and capture marks, doesn't require the move number, etc. This is for reducing the number of rejected moves, but it results that some miswritten moves are not rejected, and are accepted as a different move.
Those players who manually compose their move messages, and therefore sometimes miswrite their moves may find the StrictMode setting useful.
If they turn it on, the server will accept only fully valid, complete moves exactly as shown in the next example:
Move 1234 12.Nd2-e4
In strict mode the server requires the move number, one dot as white and three dots as black, the piece letter (even at pawns), the from square, the capture mark or hyphen, the target square, and the check mark if needed. If any of these parts is missing, or the whole move is invalid the server rejects the move.
This way the chance that a miswritten move can be valid as an other move is lowered quite dramatically.
Post Your Notice|
Voice your opinion about this page to the other visitors.
For easier printing of this page there is a printer friendly version of it:
To suggest this page someone:
Send to a friend
To view this page with another font size: