British Chess Problem Society (BCPS) provides notations for many fairy chess pieces, extending the standard algebraic notation for chess. The notation consists of one or two capital letters or of one capital letter followed by a digit. It is noteworthy that the notation of the standard Knight is the letter S (from German Springer) and the single letter N denotes the Nightrider. The notation for the Wazir is WE (from German Wesir) while the notation WA denotes the Waran (Rook + Nightrider). Relative value of pieces As with piece values in traditional chess, fairy pieces have values assigned for use in scoring and strategising. While a large amount of information can be found concerning the relative value of variant chess pieces, there are few resources where it is in a concise format for more than just a few piece types. One challenge of producing such a summary is that piece values are dependent upon the size of boards they are played on, and the combination of other pieces on the board: even when the same game format is assumed (board size and combination of other pieces), there is often little agreement on the specific value of many other pieces. On an 8×8 board, the standard chess pieces (pawn, knight, bishop, rook, and queen) are usually given values of 1, 3, 3, 5, and 9 respectively. When the basic pieces wazir (W), ferz (F), and mann (WF = K), are played with a similar mix of pieces, they are typically valued at around 1, 1.5, and 3 points respectively. Three popular compound pieces, the archbishop (BN), chancellor (RN), and amazon (QN) have been estimated to have point values around 8, 8.5, and 12 respectively. The values of other pieces are not well established; compound pieces are sometimes approximated as the sum of their component pieces, or estimated to be slightly higher due to synergistic effects (such as it is for the archbishop and chancellor). Musketeer Chess, a modern chess variant, has tried to give relatively accurate values of 10 fairy pieces: Hawk, Elephant, Unicorn, Fortress, Dragon, Spider, Leopard, Cannon, Archbishop, Chancellor. The method that led to these calculations has been based on computation, using a dedicated engine developed. Thousands of games were generated, which helped refine the values that served as a starting point (Musketeer Chess Pieces Relative Value). Other independent approaches have given Musketeer Chess a trial. For example, Sbiis