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-<H2> 2.3 Mating problems </H2>
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-<P>
-
-One good way to improve at shogi is to solve mating problems. There are
-several types of these problems, but the most common is called a
-"tsume-shogi" problem, or "tsume" problem for short. In a tsume
-problem, all pieces that are not on the board are assumed to be in the
-opponent's hand (except for your King, which is usually not shown).
-Every move you make must be check until the final checkmate. Your
-opponent may play any piece on the board or drop any of his pieces in
-hand in order to prevent the mate. In a properly constructed tsume
-problem, all of your pieces on the board and in hand must be essential
-to the solution. One consequence of this is that all of your pieces in
-hand must be played during the solution. There should only be one
-correct solution for the given number of moves. Tsume problems use
-Japanese-style move numbering; thus, a problem where you move (and give
-check), your opponent moves, and you move to give checkmate is called a
-three-mover. Here is a really trivial three-mover:
-</P><P>
-
- 3 2 1 <BR>
-----------------+ <BR>
-| | | | a <BR>
-----------------+ <BR>
-| | | wK | b <BR>
-----------------+ <BR>
-| | | | c <BR>
-----------------+ <BR>
-| bN | | | d <BR>
-----------------+ <BR>
-| | | | e <BR>
-----------------+ <BR>
-| | bN | | f <BR>
-----------------+ <BR>
-</P><P>
-
-Black in hand: S, G
-</P><P>
-
-Here, Black plays G*2b, White plays K1c, and Black plays G*1d mate.
-More typical tsume problems range from 5 moves to arbitrarily high
-numbers of moves, and they can be quite brain-busting. Tsume problems
-may seem artificial, but in the closing stages of the game where both
-players have a lot of pieces in hand, it is often necessary to give
-check at every move, or else your opponent will start a counterattack
-and will mate you before you mate him. A tsume problem is a worst-case
-scenario for the attacker: you have to mate your opponent even though he
-has every piece not on the board in hand, which means you have to
-develop sharp attacking skills. Many more tsume problems can be found
-on the internet; I particularly recommend Patrick Davin's "Shogi
-Nexus" (see section <A HREF="gnushogi_21.html#SEC21">5. References and links</A>).
-</P><P>
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