H. G. Muller wrote on Sun, Dec 23, 2018 08:12 AM UTC:
While Googling I got a 'surprise hit' on a posting of my own I had completely forgotten about! It seems I did study the value of the Alibaba once. In the opening, against a normal FIDE army on 8x8 a pair was worth 2 x 2.35 (where N = 3.25). I had no means to test how much of this was pair bonus. An individual Alibaba in the end-game seemed more like 2.00.
While Googling I got a 'surprise hit' on a posting of my own I had completely forgotten about! It seems I did study the value of the Alibaba once. In the opening, against a normal FIDE army on 8x8 a pair was worth 2 x 2.35 (where N = 3.25). I had no means to test how much of this was pair bonus. An individual Alibaba in the end-game seemed more like 2.00.
See https://www.chess.com/forum/view/chess960-chess-variants/establishing-the-value-of-a-chess-piece