11228 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?
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!
Does anyone know of a chess variant where periodic boundary conditions are used?
I certainly hope not!
Of course, it makes sense only for rows. For example, 1. b3 b6 2. Bc1-h4 would be a valid opening.
I sincerely hope you come down soon.
Why would this be such a bad idea?
For all I know, it's a wonderful idea (if only I understood it).
1. Qxe8 (wrapping around through the bottom) wins by force.
What is a periodic bundary condition?
I guess that gets to the heart of the matter, yes...
Maybe they lock the door to the room every now and then so you can't go to the bathroom?
Periodic boundary conditions mean that rows wrap around and it is legal to move from column a to h, and back. You can move off the edge of the board and enter on the other side. So, for example, if your bishop is on a3, it can move to h4, g5, f6, etc.. A knight on a3 could additionally move to h5 and g4. Only horizontal wrapping makes sense, of course.
The term periodic boundary conditions comes from physics, and you can read the introduction on Wikipedia to get an idea how it is used there. In effect, it would make the board infinitely long (horizontally), with the position repeated every 8 columns. No corners and no absolute center squares.
Here is an illustrative example of a valid periodic game: 1. b3 e5 2. Bc1xd8, where the bishop goes Bc1-b2-a3-(wraps around the periodic boundary on the edge of the board)-h4-g5-f6-e7-xQd8.
O, I get it. So sort of like those super unrealistic plane flying games, where your plane goes off the screen on one end and comes out on the other end?
It's a very interesting idea, despite my joke about 1.Qxe8#. I wish I knew people in the real world who played chess so I could try a game.
The weatherman said it had something to do with colliding fronts.
Exactly. A good, down to Earth illustration.
Cylinder Chess, where the a-file connects in the same orientation to the h-file, is one example. The Fairy-Max engine can play this under WinBoard.
Another example is one particular brand of Circular Chess. This is usually described as Chess on an annulus of 4 squares radially, and 20 squares along the circumference, with complex rules for crossing through the hole in the center. Similar to the board depicted here:
If you think about it, this is equivalent to a 10x8 Moebius board, where you connect the left and right edge of the board in reverse order (rank 1 to rank 8, 2 to 7 etc.)
games without rooks
by wargame1942 a few minutes ago
8/27/2014 - The Middle And Final Resting Place
by pika9 a few minutes ago
What will Nakamura's excuse be at Sinquefield 2014?
by oxoxvc 3 minutes ago
andriod app update pushed out yesterday
by alien_roger 10 minutes ago
I broke 1800!
by VULPES_VULPES 10 minutes ago
Glitch - group disabled
by PLAVIN79 11 minutes ago
ADMIN -- Someone deleted the "Egalitarian Troll Society"
by EscherehcsE 14 minutes ago
11/24/2007 - Magnificent Mate in 7
by RevLev 17 minutes ago
Seeing Killer Moves 1 Second Too Late
by chess_jawa 20 minutes ago
Positional (calm) player vs tactical (sharp) one
by Goob63 21 minutes ago
Why Join | Chess Topics |
Help & Support |
© 2014 Chess.com
• Chess - English
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!