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Sphinx Chess. Likely the first 4D chess variant.[All Comments] [Add Comment or Rating]
HaruN Y wrote on Sat, Aug 17 06:00 AM UTC:

Not Sphinx Chess 960

files=16 ranks=16 promoZone=1 promoChoice=NBRQ graphicsDir=/cgi-bin/fen2.php?s=50&w=eada78&b=87adae&p= squareSize=50 graphicsType= royal=K shuffle=N!BRQK borders=0 firstRank=1 lightShade=#ffdaa8 coordColor=#ffed87 rimColor=#87faff holeColor=#87faff darkShade=#98ffe4 hole::::e1,f1,k1,l1,e2,f2,k2,l2,e3,f3,k3,l3,e4,f4,k4,l4,a5,b5,c5,d5,e5,f5,g5,h5,i5,j5,k5,l5,m5,n5,o5,p5,a6-p6,e7,f7,k7,l7,e8,f8,k8,l8 pawn:P:fmHXfmWfcFfhcLXfcWXXfcDX:pawn:a1,d1,m1,p1,g7,h7,i7,j7,,g10,h10,i10,j10,a16,d16,m16,p16 centaura:N:NLX0HX0WXX0DX0:amazon:c1,n1,,c16,n16 bishop:B:BLX0WXX0DX0:bishop:g1,j1,,g16,j16 rook:R:RHX0:rook:b1,o1,,b16,o16 queen:Q:QHX0LX0WXX0DX0:queen:h1,,h16 king:K:HXLXWXXDXK:king:i1,,i16

Edit: What should I call this chess variant I invented because I misinterpreted the rules?


📝Ben Reiniger wrote on Sun, Aug 18 12:48 AM UTC in reply to HaruN Y from Sat Aug 17 06:00 AM:

Your interactive diagram has given the pieces too much power: a piece never changes both its board and its relative position. (I've described this before as "2+2 dimensions" as opposed to a fully symmetric 4 dimensions.)


📝Ben Reiniger wrote on Sun, Aug 25 04:21 PM UTC in reply to HaruN Y from Sat Aug 17 06:00 AM:

Yours still seems to overprescribe movements (but this has been wonderful as a start to more-symmetric 4d games like my own TessChess, for which I'm dabbling with expanding your diagram here). Here's my attempt. Let me know if you have questions about the rules, or if I seem to have Betza'ed incorrectly (likely).

files=16 ranks=16 promoZone=1 promoChoice=NBRQ graphicsDir=/cgi-bin/fen2.php?s=50&w=eada78&b=87adae&p= squareSize=50 graphicsType= royal=K shuffle=N!BRQK borders=0 firstRank=1 lightShade=#ffdaa8 coordColor=#ffed87 rimColor=#87faff holeColor=#87faff darkShade=#98ffe4 hole::::e1,f1,k1,l1,e2,f2,k2,l2,e3,f3,k3,l3,e4,f4,k4,l4,a5,b5,c5,d5,e5,f5,g5,h5,i5,j5,k5,l5,m5,n5,o5,p5,a6-p6,e7,f7,k7,l7,e8,f8,k8,l8 pawn:P:fmHXfmWfcFfcAYY:pawn:a1,d1,m1,p1,g7,h7,i7,j7,,g10,h10,i10,j10,a16,d16,m16,p16 centaura:N:NHX0AYY0:amazon:c1,n1,,c16,n16 bishop:B:BAYY0:bishop:g1,j1,,g16,j16 rook:R:RHX0:rook:b1,o1,,b16,o16 queen:Q:QHX0AYY0:queen:h1,,h16 king:K:KHXAYY:king:i1,,i16

HaruN Y wrote on Mon, Aug 26 12:47 AM UTC in reply to Ben Reiniger from Sun Aug 25 04:21 PM:

Oh, I see.

I thought there would be no AYY because I thought "they change either the letter or number (but not both)" meant no moving diagonally between the boards & somehow I missed that moving diagonally doesn't change the number.


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