It seems I always have misinterpreted this rule. The WinBoard inplementation of Great Shatranj allows promotion to any piece that was captured before. Fairy-Max doesn't support 'under-promotion', and always promotes to the same piece. So I had to pick the General for that.
It seems to me that the rule is needlessly complex. (And therefore a bad rule.) Dababba, Elephant or Knight would be very rare choices, so that you would want to pick any of those twice is a bit inconceivable. General would (in general ;-) ) be a better choice, and there is no limit on those. Minister and High Priestess are of course very strong, and the obvious choice when it can survive. The first promotion that does that, will very likely be decisive. Which makes it irrelevant whether you could do it a second time or not.
It seems I always have misinterpreted this rule. The WinBoard inplementation of Great Shatranj allows promotion to any piece that was captured before. Fairy-Max doesn't support 'under-promotion', and always promotes to the same piece. So I had to pick the General for that.
It seems to me that the rule is needlessly complex. (And therefore a bad rule.) Dababba, Elephant or Knight would be very rare choices, so that you would want to pick any of those twice is a bit inconceivable. General would (in general ;-) ) be a better choice, and there is no limit on those. Minister and High Priestess are of course very strong, and the obvious choice when it can survive. The first promotion that does that, will very likely be decisive. Which makes it irrelevant whether you could do it a second time or not.