🕸💡📝Fergus Duniho wrote on Wed, Jun 2, 2010 02:09 AM UTC:
HP wrote:
'This game counts as a Xiang Qi variant, because it is based on Xiang Qi, and it can be played with the same equipment.' So, you want to say that games, wich adds R+N and B+N compounds on 10x8 or 10x10 are not FIDE chess variants, because they cannot be played with FIDE chess equipment?
No, I did not give necessary conditions for being a Xiang Qi variant. I only gave a sufficient condition, which is being based on Xiang Qi and using the same equipment. Being based on Chess and using the same equipment as Chess is a sufficient condition for being a Chess variant, but it is not a necessary condition. So, games which use R+N and B+N with the Chess pieces on a larger board may still count as Chess variants.
But you are correct to point out that Yang Qi cannot be played with the same equipment as Xiang Qi, because it uses extra Pawns. However, all the equipment to play Yang Qi can be found in two Xiang Qi sets, which is close enough. After all, using exactly the same equipment is not a necessary condition for being a Xiang Qi variant.
HP wrote:
No, I did not give necessary conditions for being a Xiang Qi variant. I only gave a sufficient condition, which is being based on Xiang Qi and using the same equipment. Being based on Chess and using the same equipment as Chess is a sufficient condition for being a Chess variant, but it is not a necessary condition. So, games which use R+N and B+N with the Chess pieces on a larger board may still count as Chess variants.
But you are correct to point out that Yang Qi cannot be played with the same equipment as Xiang Qi, because it uses extra Pawns. However, all the equipment to play Yang Qi can be found in two Xiang Qi sets, which is close enough. After all, using exactly the same equipment is not a necessary condition for being a Xiang Qi variant.