moves to 53 and promotes,' which distinguishes it from N45-53+). The Japanese notation system uses Japanese characters for pieces and promotion indication and uses Japanese numerals instead of letters for ranks. Movement type aside from drops is not indicated, and the conventions for resolving ambiguity are quite different from the western system. As examples, the western Rx24 would be in Japanese notation, +Rx24 would be , S-21+ would be , S-21= would be , and N65-53+ would be showing that the leftmost knight jumped (implicitly from the 65 square), which distinguishes it from in which the rightmost knight jumped. Although not strictly part of the notational calculus for games, game results are indicated in Japanese newspapers, websites, etc. with wins indicated by a white circle and losses indicated by a black circle. Strategy and tactics Shogi is similar to chess but has a much larger game tree complexity because of the use of drops, greater number of pieces, and larger board size. In comparison, shogi games average about 140 (half-)moves per game (or 70 chess move-pairs) whereas chess games average about 80 moves per game (or 40 chess move-pairs) and minishogi averages about 40 moves per game (or 20 chess move-pairs). Like chess, however, the game can be divided into the opening, middle game and endgame, each requiring a different strategy. The opening consists of arranging one's defenses usually in a castle and positioning for attack; the mid game consists of attempting to break through the opposing defenses while maintaining one's own; and the endgame starts when one side's defenses have been compromised. In the adjacent diagram, Black has chosen a Ranging Rook position (specifically Fourth File Rook) where the rook has been moved leftward away from its starting position. Additionally, Black is utilizing a Silver Crown castle, which is a type of fortification structure constructed with one silver and two gold pieces and the king moved inside of the fortification – the silver crown name comes from the silver being positioned directly above the king's head on the 27 square as if it were a crown. In the diagram, White has chosen a Static Rook position, in which the rook remains on its starting square. This Static Rook position is specifically a type of Counter-Ranging Rook position known as Bear-in-the-hole Static Rook that uses a Bear-in-the-hole castle. The Bear-in-the-hole fortification has the king moved all the way into very