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There may be a slight bug with the submission rating system. I originally put Rifle Chess as 'Average' and had a comment. Recently I edited the comment, and then noticed the system acted as if my rating had never existed. So, I went to edit my comment again, purely to re-rate Rifle Chess, and noticed that 'Average' was no longer given as an option to select(!); so, I selected a rating of 'Good' instead, and now the system is showing that I've rated 'Rifle Chess'. A minor bug, perhaps, but I thought I'd let you know, Fergus.
Perhaps this game is best suited for a speed chess time control, as a previous poster alluded to in a way.
In trying to tentatively estimate the value of the pieces in this variant, I'd guess that the long range pieces may be worth, say, double what I give them as in standard chess. Thus: P=1; N=3.49; B=7; R=11; Q=20 and the fighting value of K=4 (though naturally it cannot be traded).
This game is conceptually appealing yet famously poor. An improved subvariant is what I would call "Spotters" Chess, where a piece captures only when another friendly piece has the piece in its sight (the spotter). On playtesting this subvariant is decent, but still not great. Making captured pieces be converted adds complexity. Maybe that would make a worthwhile game for this concept.
I just made a Fairy-Max derivative that is able to handle rifle captures, next to its ordinary move repertoire. I used it to test some pieces that could rifle-capture their direct neighbors (cK-bK in Betza 2.0 notation), in addition to other moves. One thing I noticed watching the games is that pieces can be guarded by attacking their attacker. BTW, the K rifle captures on a piece that did not have any K moves was worth about the same, or even slightly more as having all K moves (m + c) on that piece.
Rifle Chess can be saved by the addition of reaction fire. For example, if the Qh5 shoots Pg6, Pg6 can shoot back and kill the Queen, even though it was not his turn to move; as per the csipgs game 'Perfect General' and other such games. This was part of my game Autorifle Chess from the 1970s -- a barely-playable game whose reason for existence was as a demonstration that not only could rifle be saved but even autorifle could be saved! (Just showing off, I was.) In straight Rifle Chess, I'd add the restriction that you get no reaction fire if your last move included a capture -- again, according to several csipgs games.
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Anyone know whether an attempt to solve Rifle Chess is (or has already) happen[ing/ed] somewhere?
In view of Losing Chess being solved (i.e. White should win from the start with optimal play), I'd certainly feel happier playing a game of Rifle Chess than a game of the former nowadays, if I had to choose between the two variants, for that reason alone.