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Switching Chess swap could be implemented for all 2000 CVP games, as well as the 2000 Pritchard ECV games. (A couple hundred now overlap both sources, as this week's Cross and Chesquerque) Like Fischer's random baseline, the new idea--distinct from Neto's Swap--has general applicability. The fact that Switching's first use is for standard FIDE chess shows Chess Variant Page for what it is, a bastion of orthodoxy. Seriously, SwgCh likely best recommendation since FRC staying within 64 squares to upset memorized opening theory. Pritchard under Capablanca's Ch, pages 38-39, summarizes debate in 1920s to reform Chess, led by GM JRC. Not locked in a thought-rut like other Grandmasters, Capablanca, Fischer, Botvinik know every game to be CV and yet quest for few ideal forms.