Update markdown pages.

www/about/main.md

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 # About
 
+Dzura is a two-player abstract strategy game contending the armies of Dawn and Dusk.
+Inspired by the chess family, the game features a variety of pieces, each with its own pattern of movement.
+Borrowing from shogi, captured pieces may be returned to the board on the capturer's side and pieces that reach the far side of the board are promoted.
+
 Dzura is a work of [Project Kirisame](https://kirisame.com).
 
  - [Project License](https://ykr.info/license)

www/guide/game.md

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 # Game
 
-Dzura is an abstract strategy game, similar to chess and shogi, in which players take turns moving and placing pieces on a hexagon grid to capture the opponent's king (Source).
+Dzura is an abstract strategy game played between two collections of pieces on a 4-ring hexagon board.
+Players take turns moving pieces around the board to capture the opponent's king (Source).
+When a piece moves onto the tile of an opposing piece, the opposing piece is captured and added to the player's pool.
+Captured pieces may be played back onto the board on the player's side.
 
 
 ## Setup

www/guide/pieces.md

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 # Pieces
 
+**Recent rule changes have made this page outdated.**
+
+
 ## Militia
 
 Militia are the primary offensive pieces, capable of moving in the three forward directions.