Mercurial > hg > terminal-chess / file diff

--- a/PROTOCOL.md	Mon Aug 24 13:20:19 2026 +0200
+++ b/PROTOCOL.md	Mon Aug 24 13:42:35 2026 +0200
@@ -39,6 +39,9 @@
   * a BYTE index for the row the piece was moved from
   * a BYTE index for the file the piece was moved to
   * a BYTE index for the row the piece was moved to
+  * a BYTE set to 1 if this is a capturing move and to zero if it is not
+  * a BYTE set to 1 if this move gives check, 2 if it gives checkmate, and
+    zero otherwise
   * a BYTE describing the selected piece for promotion (otherwise zero)
 
 Note carefully that the byte order used by this protocol is little-endian while
@@ -116,7 +119,17 @@
 
 ## Playing the Game
 
-TODO: describe
+The game is played by exchanging moves.
+We call the player supposed to make the next move the _active_ player.
+The other player we call the _waiting_ player.
+
+### Make a Move
+
+### Resign
+
+### Offer or Claim a Draw
+
+### Propose Resignation
 
 ## Message Code Table