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Diagonal Chess. Board turned 45 degrees. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Anonymous wrote on 2003-08-09 UTCGood ★★★★

Charles Gilman wrote on 2003-11-16 UTCGood ★★★★
At first glance I thought the promotion limits rather odd, but now I can
see that the Queening squares are indeed harder to get to than other
promotion squares from binomial theory. It still seems slightly odd that
the Knights have been turned into Camels in all but name, although it is
a
good illustration of the connection between the two leapers' moves.

One thing to do with the 8th Pawn would be stick it on top of the left
Rook to represent a real (unbound) Knight. That way the radial linepieces
would be one bound to each square colour on the left and a single unbound
one on the right, and the oblique leapers would be the other way round.

Benjamin Scott wrote on 2005-03-06 UTCGood ★★★★
A friend and I 'invented' a variation like this independently, except we had the knights moving 'normally' -- just the pawns were different. And we didn't do pawn promotion at all. It made things a lot more interesting without having to remember a whole new set of rules. Normal chess stategy almost applies, but also keeps tripping you up as you forget which way things are going! Like the description says, one nice thing about this is that you can use a regular chess set -- important as we only had the one!

Gabriel wrote on 2012-02-22 UTCGood ★★★★
I've been toying with a similar idea for the last couple of days and
decided to google it. I'm happy to see other people have also thought of
this.

All in all, I like your initial board setup but I don't like the knight
movement change and the pawn promotion rules are hard to learn. Diagonal
chess should be casual, fun and easy, when you are bored of the normal
one!

In my current design, pawn promotion only happens at the very last square
(H8). This might seem near impossible to achieve, but my pawn movement is
also different. You can move them in either diagonal and only eat straight
forward. Exactly the opposite of the image above. This makes the game
completely different and quite fun, as you can group pawns from different
lanes together in creative formations.

I have also toyed with dropping one of the bishops instead of the 8th pawn.
The initial board setup is thus different, with a knight by each rook, the
8th pawn in the center, and the queen and bishop adjacent to the king.

Charles Gilman wrote on 2012-02-24 UTC
The idea of having the camps in opposite corners is one that keeps recurring. If you turn Raumschach on its side you will see that that too is a corner-based variant, and the Pawns move accordingly. This one must have slipped my mind when I came up with A Cornucopia of 9x9 Corner variants, or I would have credited it. Just in case this variant was a subconscious influence I have now done so. One of them uses FIDE pieces but doubling the numbers of most, including Bishops, avoids the need for an asymmetric array.

Ben Reiniger wrote on 2012-02-24 UTC
Not sure if this really belongs as a comment on this page, but here goes.
Raumshach is a bit like a diagonal game, but in higher dimensions diagonal starts to have different meanings (the colloquial 'triagonal', etc.)  I've taken to giving the number of dimensions that are 'lateral' versus those that are 'attacking'.  So Raumschach is 1-lateral and 2-attacking.  Some of the very large 3D (8x8x8) variants are 2-lateral and 1-attacking.  Most 4D variants are 2-lat and 2-att.  Ordinary chess is 1-lat and 1-att, whereas Diagonal chess is 0-lat and 2-att.

Henry Park wrote on 2014-04-13 UTCAverage ★★★
I think exchanging places of rook and bishop is better because bishop isn't colurbound and rook is colorbound in here.

Ben Reiniger wrote on 2014-04-13 UTC
Henry, I think in this game rooks and bishops move as usual (ignoring the rotation of the board).

Brian Wagner wrote on 2020-09-23 UTCExcellent ★★★★★

Very similar to Wagner Chess: https://github.com/brianthetall/wagnerChess


Fergus Duniho wrote on 2020-09-23 UTC

Very similar to Wagner Chess

Do you have a description of your game anywhere? Your link mainly goes to source code files.

[Updated to removed rating caused by a bug in the script.]


Greg Strong wrote on 2020-09-23 UTC

Also similar to Diamond Chess, from the 19th century, except for a radically different Knight move, different Pawn promotion rules, and a different setup.


Fergus Duniho wrote on 2020-09-24 UTC

Greg,

You might have rated this page five stars due to a bug in the script. This reply to you is a test to make sure the bug is fixed. It was copying the rating of the person you replied to when you made a reply.


Greg Strong wrote on 2020-09-24 UTC

Yes, that is what happened. I removed the rating. Thanks!


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