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Rose Chess XII. With Nightriders, (Half-)Roses, Spotted Gryphons and War Machines. (12x12, Cells: 144) [All Comments] [Add Comment or Rating]
H. G. Muller wrote on 2023-02-15 UTC

In the terminology of All the King's Men the 'degenerate' bent riders that double their stride after the first step are called slip pieces. (While the normal riders with a two-square stride are called skip pieces, and those that half their stride ski pieces.) So the Spotted Gryphon would be a Slip Griffon.

💡📝David Paulowich wrote on 2023-02-15 UTC

I have recently recalculated the piece values in this game. And finally gave Ralph Betza due credit for inventing the Spotted Gryphon. Unlike me, Fergus managed to read all of Ralph's bent rider theory without falling asleep. Caïssa Britannia, invented by Fergus Duniho in 2003, contains the Dragon (Alfilrider + Dabbabarider). But what about the squares that are skipped over? On [2021-02-24] Fergus Duniho wrote a Comment (worth quoting here) to Bent Riders by Ralph Betza.

"Last night I was thinking of bent riders that are not bent in the sense of changing direction. I suppose they are among the 25 possibilities Betza mentions, but I don't think he elaborated on them. One piece I was thinking of would initially move as a Wazir, then if it continues, continue as a Dabbabbah-Rider. Unlike the Dabbabbah-Rider, this would not be color-bound. Another one would initially move as a Ferz, then if it continues, continue as an Alfil-Rider. Unlike the Alfil-Rider, this would be able to reach every space of the same color instead of just half of them. I was thinking I might call these the Shifty Rook and the Shifty Bishop and their compound the Shifty Queen. Has anyone used these pieces before?"

Jörg Knappen wrote on 2021-05-23 UTC

Ah yes, I see, it is a halfling Rose indeed!

H. G. Muller wrote on 2021-05-23 UTC

Nice to see the Spotted Gryphon in this diagram, it is another difficult piece to describe!

Indeed. Before I had introduced the paretheses notation, it would have been necessary to mention every distance separately, with a large number of intermediate steps.

I understood from the article that in this variant the Rose only has 4 steps.

Jörg Knappen wrote on 2021-05-23 UTC

Shouldn't the Rose have the move qN8 (including a zero move if the full circle is available) instead of just qN4? In the starting position after

  1. k4-k5 ... it should be possible to play 2. Of2-f6.

Nice to see the Spotted Gryphon in this diagram, it is another difficult piece to describe!

H. G. Muller wrote on 2021-05-23 UTC
satellite=rose files=12 ranks=12 graphicsDir= promoZone=2 maxPromote=1 squareSize=35 graphicsType=png lightShade=#FFFFCF startShade=#70B79F rimColor=#0F1090 coordColor=#EFEF1F borders=0 firstRank=1 useMarkers=1 promoChoice=!P,Q,S,O,H,R,B,W,N pawn::::b4-k4 war machine::WH:scout:d2,i2 knight:N:::d3,i3 bishop::::e3,h3 rook::::c3,j3 nightrider:H:NN::g2 spotted gryphon::Fafspmaf(afpmaf)4F:gryphon:b2,k2 rose:O:qN4::f2 queen::::f3 king::KisO2::g3

Rose Chess XII

Georg Spengler wrote on 2015-01-04 UTCGood ★★★★
Innovative choice of pieces. Theoretically they fit well with each other. But game play turnsout to be rather awkward.

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