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ArchCourier Chess. This game is Courier Chess expert Eric Greenwood's modernization of Courier Chess. (12x8, Cells: 96) [All Comments] [Add Comment or Rating]
H. G. Muller wrote on Wed, Oct 19, 2022 05:48 AM UTC in reply to Jean-Louis Cazaux from Tue Oct 18 09:19 PM:

Well, BW is about equal to Rook. On 8x8 at least. But you are right, quick naive counting with Q = RN = 9, BN = 8, KN = RF = NAD = 7, R = BW = 5, B = N = FW = 3 gives totals of 31 for FIDE, 48 for Capablanca and 60 for this. So it has 33% more power on a 20% larger board as Capablanca. Divided by the board width we get 3.875, 4.8 and 5. I guess part of that is due to the fact that it has an extra piece. But Seirawan Chess with 48 on 8x8 is much worse (6). And I did not even bother to calculate it for variants like Sac Chess.