quoting Rich Hutnik's first three S.E.T.S. Rules:
'Here is how different conditions are scored:
1. A win by checkmate, or an opponent resigning, is worth 2 points.
2. Count barring the king (reducting their opponent to just their king) as
a 1 point victory. However, if that player's king is also bared on the
very next move by their opponent, then the victory is worth only 1/2
point. When the situation of barring the king arises, the player has a
decision whether or not to take the 1 point upon their next move, if they
also don't have a barred king. If they fail to take the barred king
victory, then this opportunity passes. In this case, other scores can
come into being.
3. Stalemate is worth 1 point to the player who causes their opponent to
being a position where they are stalemated. In games where king capture
replaces checkmate, this rule is optional. Games operating under basic
rules use king capture instead of checkmate.'
My [2005-03-08] comment on the Shatranj Comments/Ratings page presented a sequence of legal moves, ending in a position with no more legal moves (for the player whose turn it is). That constituted a COMPLETE game of Shatranj, which demonstrated that BLOCKADE STALEMATE can still happen in variants which allow king capture. Your statement that '... this rule is optional.' is completely mistaken and will encourage others to make more mistakes. See Simplified Chess, posted less than a month after this page, for an example.
My [2005-03-08] comment on the Shatranj Comments/Ratings page presented a sequence of legal moves, ending in a position with no more legal moves (for the player whose turn it is). That constituted a COMPLETE game of Shatranj, which demonstrated that BLOCKADE STALEMATE can still happen in variants which allow king capture. Your statement that '... this rule is optional.' is completely mistaken and will encourage others to make more mistakes. See Simplified Chess, posted less than a month after this page, for an example.