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H. G. Muller wrote on Thu, May 22, 2008 07:10 AM UTC:
'Have you tried the Modern Capablanca Random Chess viariant with your engines?'

No, my engines do not have FRC-type castling ability yet. It is still on my to-do list for Joker80, together with allowing it to play on 8x8 by filling up part of the board with impassible objects. (It already uses such objects to confine the pieces to 10x8, as its internal board is 32x12, so this is a minor change; it just has to adapt the positional center-points table to where the new corners are. And of course use a different type of castling.) The main objective would be to play in FRC competitions.

The Modern CRC variant doesn't particularly appeal to me. The resulting games should be indistinguishable from normal CRC. The only difference is the opening array. The Bishop adjustment rule is also an opening thing. Opening theory never had much appeal to me, I consider it the dullest part of Chess. None of my engines ever had an opening book, even in variants like 8x8 FIDE, where extensive opening theory exists. The Bishop adjustment rule seems awkward from an aestethic point of view, and half-hearted from a logical point of view: first you change the rules by allowing arrays with like Bishops, and then you largely subvert the effect of itby allowing the adjustment. As the disadvantage of having the Bishops on like colors was measured by me to be half a Pawn, not doing it would be very poor strategy.

For exploring the possibilities like Bishops offer, it would be much cleaner to augment the Bishop with a single orthognal backward step as non-capture only. Then people can actually use it without hesitation, as they can always undo the effect later. The extra move of such a 'Naughty Bishop' hardly has any tactical value in itsels, as it is a non-capture, and directed backwards. It added only about 15 cP to the piece value. Introducing a piece of different gait is much cleaner than adding a special, complicated rule.

The symmetric castling seems to add nothing, it looks just like a difference for the sake of being different. The same holds for the inversion symmetry in stead of vertical-flip symmetry. This doesn't mean this would be a poor game to play, of course. But I think such irrelevant differences do make it a poor design as a CV.

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