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-GNU Shogi manual: Draws
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- 2.1.6 Draws
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-There are very few draws in shogi; only about 1-2% of professional games
-end in a draw. One reason for this is that material can never be
-depleted as in chess, because captured pieces are constantly re-entering
-play as a consequence of the drop rule. In fact, most of the ways a
-game can be drawn in chess are not allowed in shogi:
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-- Draws cannot be offered.
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- There is no fifty-move rule.
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- A stalemate counts as a win for the stalemater. Stated otherwise:
-if you can't move, you lose.
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- Perpetual check is illegal (see below).
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-There are only two legal ways in which a draw can occur:
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-- A position (including the pieces in hand) occurs 4 times with the same
-player to move (called "Sennichite"). However, if this is caused by
-consecutive checks (direct attacks on the King, threatening to capture
-it on the next move) by one side, the player giving these checks loses
-the game. In other words, perpetual check results in a loss for the
-attacker who recreates the same position the 4th time.
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- Both players have moved their King into the the promotion zone (or they
-cannot be prevented from doing so) and the Kings cannot be checkmated.
-A King who has entered the promotion zone is known as an "entering
-King"; due to the forward orientation of most shogi pieces, it is very
-hard to mate such a King. In that case the players may decide to count
-their pieces as follows: the King does not count, the Rook and Bishop
-count as 5 points, and all other pieces as one point. Promotion is
-disregarded. If both players have at least 24 points the game is a draw
-(called "Jishogi"). If a player has less, he loses the game.
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-Of course, a player can refuse to count pieces when he still has mating
-chances or chances to gain material which would affect the outcome of
-the counting. There is no strict rule about what to do if this is not
-the case, but nonetheless a player refuses to count up (e.g. because he
-does not have enough points for a draw). It has been generally accepted
-that in such a case the game ends and the pieces are counted after one
-player has managed to get all his pieces protected in the promotion
-zone.
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-This document was generated
-by Michael C. Vanier on July, 7 2004
-using texi2html
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