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This item is a game information page
It belongs to categories: Orthodox chess, 
It was last modified on: 2008-06-27
 By Graeme C Neatham. Delta88 Chess. Chess on a Trigonal Board. (11x8, Cells: 88) [All Comments] [Add Comment or Rating]
Anonymous wrote on 2008-11-30 UTCExcellent ★★★★★
I have to correct myself: The tower has the can-mate property in the corner
on this board. The mate picture looks like

White King d1 Tower c3; Black King a1 or a2. This mate can be enforced.

Therefore I correct my previous rating to 'excellent' for a working
chess variant on a trigonal board.


Anonymous wrote on 2008-11-28 UTCPoor ★
I have thought of trigonal variants with similar pieces for years, but did
not ever publish a game. The reason is that even the advantage of a tower
does not win the game, the endgame king + tower vs. king is only a draw. I
turns out that the trigonal king is not as good as the square king in
assisting a mate; the reason is the rounded envelope of the fields he

So winning by the FIDE rules makes the game 'poor'. It could be improved
by allowing a win by bare king.


David Cannon wrote on 2008-04-29 UTCExcellent ★★★★★
Hi Graeme!  I'm delighted to see this variant.  I've been mucking around with a few trigonal boards myself, so I'm glad to see you cut the trail for me.  Just one comment: I notice that you've made the Queen a combination of Spire and Bishop.  That makes the Queen scarcely more powerful than the Tower (a Rook-like piece).  Have you considered a Spire-Tower combination for the Queen?  That would make a much more powerful piece worthy of the name, in my opinion.  You could still keep the present Queen, but perhaps change her name to something else.

And by the way, could we get a Zillions program to play this game?

Keep up the good work!

Joshua Morris wrote on 2007-08-30 UTCGood ★★★★
Interesting idea.  I've often wondered what a triangular Chess might look like.

Also:  Oww, my brain!

Sam Trenholme wrote on 2007-08-27 UTCExcellent ★★★★★
I like seeing variants move beyond the usual square and hexagon boards. Another interesting board is the board used in the ParaChess variant. Not to forget the Crazy 38s board. Some other boards that may make for good chessvariants are some of these boards or these potential boards.

- Sam

Jeremy Good wrote on 2007-08-22 UTCExcellent ★★★★★
This game makes me excited to begin playing with triangles for the first time.

Can someone with the technical knowhow please add this type of triangle as one of the building blocks for Game Courier?

Who can help with this? Tony?

I'm very excited to play Graeme's game and also design a trigonal game with different types of tiling riders.

In a private note, I am critical of Graeme for choosing to call the queen spire + bishop since a queen is traditionally bishop + rook.

On a second read, I can see how that happened.

The rook already goes to all the squares the bishop goes to, but to retain its defining feature of colorboundness, the bishop can not behave like a spire. So the nomenclature is a bit odd at first, but ultimately it makes sense.

Kudos, Graeme, BRILLIANT job!

Charles Gilman wrote on 2007-08-22 UTCGood ★★★★
An imaginative use of an unorthodox board. This game has potential for intersting further developments, for example with other compound pieces.

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