Partner 1680X Chess Computer
(600-2428A)            Study Positions                Faxback Doc. # 17072

USING THE STUDY POSITIONS

Your computer has 8 built in chess study positions that you can try to
solve with its help.

These study positions are intended to entertain you and improve your
knowledge of chess. You can select any study position, analyze it
carefully, and try to find correct moves for white. The computer knows the
principle lines of attack as analyzed by chess masters, so it can help you
solve the study position.

NOTE:  When using the study positions, the computer automatically sets
       itself to level B7 (L-3E) and the coach function. For more
       information about levels, see "Play Levels". For more information
       about the coach function see Coach Function."

Follow these steps to use a study position.

1.  Repeatedly press STUDIES until you see the study position you want (1
    through 8). The computer displays St n, , is the study position number
    (1 through 8). The computer loads one of the move series for the study
    position you choose into its memory

2.  Set up the board as shown in the diagrams in "About the Study
    Positions" for the study position you selected

3.  Press STUDIES

4.  Once you select a study position, enter a move. Or, select the first
    move from a series for the study position you choose, then enter the
    move

If the move you made is in a move series within the computer's solution
library, the computer will make a countermove, and play continues. If your
move is not in the computer's solution library, the computer beeps and
displays "oob", indicating that your move is out of book, and the computer
will not play a countermove. Press TAKEBACK to take back the move and try
another move. When you play the correct move, the computer will countermove
with the best defense for black.

If you cannot find the solution yourself, press PLAY. The computer shows
you how white should play.

ABOUT THE STUDY POSITIONS

For a list of move series for all study positions see "Study Position Move
Series."

Study Position 1 :White to Play and Win

Study Position 1 illustrated how to checkmate an opponent's single king
with a limited number of pieces.

In Study Position 1, the white king and white rook must work together to
trap and checkmate the black king, From this position, white can checkmate
the black king in as few as 8 moves.

This study position has 2 separate series of moves.

Study Position 2: White to Play and Win

Study Position 2 illustrates the strategy of "gaining the opposition." In
order to promote a pawn, the white king must first gain opposition.
Advanced players know that 2 kings are facing each other on the same rank
or file with only 1 empty square between them, then the player waiting to
move is said to have the opposition. Gaining the opposition is almost
always an advantage in pawn endgames, since it allows a player to gain
territory and penetrate the opponent's position.

This study position has 3 separate series of moves.

Study Position 3: White to Play and Draw

Study Position 3 illustrates the strategy of "drawing." Knowledge of Study
Position 2 should help you understand this strategy. white, in grave danger
of losing, must play a surprising move to deprive black of the opposition
and hold black to a draw.

This Study position has 2 separate series of moves.

Study position 4: White to Play and Win

Study Position 4 illustrates the "skewer" strategy. If the black king moves
to the 6th rank, white can check with the rook, promote a pawn, and win
very easily.  The black king and black rook are forced, into a fatal line
up along the 7th rank, after which white uses a deadly skewer to win the
black rook.  Without knowing this tactic, white could not win the game,
despite a 3-pawn advantage.

This study position has 1 move series.

Study Position 5: White to Play and Win

Study Position 5 was taken from the game Capablanca- Tanerow, New York,
1910. The white queen is attacked by Tanerow's black bishop on E5.
Capablanca, who was the champion from 1921 to 1927, took just a few
brilliant moves to defeat Tanerow. Can you find them?

This study position has 1 series of moves.

Study Position6: White to Play and Win

Study Position 6 was taken from a game between the American genius Paul
Morphy and the Duke of Brunswick, which was reported to have taken place
during and opera! Even after you have found the correct attack, you should
play through Study Position 6 more than once, since the computer will try
different defenses for black.

This study position has 5 separate series of moves.

Study Position 7: White to Play and Win

Study position 7 was taken form the game Alekhins- Grunfeld, Carlsbad, 1923
(with the colors reversed), which "some competent critics have considered
the finest ever played," according to chess grandmaster Reuben Fine. Since
the computer will try different defenses for black, you should play through
Study Position 7 more than once.

This study position has 3 separate series of moves.

Study Position 8: White to Play and Win

Study Position 8 was taken from the game Edemas-Torre, New Orleans.  1920,
and contains a series of astonishing sacrifices of great beauty and
originality. White could give "black- rank mate" if square E8 were not so
well protected, Therefore, white attempts to divert the black queen or the
black rook on C8 from their defense of this square. If you do not
understand the moves the computer plays black, try playing other moves
against the computer. Select Study Position 8, press PLAY, make a different
black defensive move, then press PLAY, again. You will soon realize why
black was so cautious.

This study position has 2 separate series of moves.

About the Solution Library

Your computer has a built-in solution library that contains one or more
series of solutions for white and black for each study position. Each
series contains one possible sequence of moves and countermoves during a
chess game that, if followed, will result in white either drawing or
checkmating black. The solution library contains at least one series of
suggested moves for each study position.

When you play a study position, the computer selects one of the series of
suggested moves for the study position at random.

NOTES:  If you want to let the computer show you the suggested moves for
        both white and black while playing a study position, press PLAY
        before each move. The computer shows you how white and black should
        play.  When you make all of the moves in the series (while pressing
        PLAY), the computer displays "oob" and beeps several times. You
        must then make the final move to checkmate black

        If the computer displays "oob" and beeps once when you make a
        suggested move, the series you are playing might be the wrong one.
        Look at the next series within the same study position, then try
        the move for the color you are playing next to the move sequence
        number you used in the previous series

The computer's solution library contains the following moves.

Study Position Move Series


Study Position 1

Move Sequence               White Moves               Black Moves

1.                          Rook to E5                King to F7
2.                          King to D5                King to F6
3.                          King to D6                King to G6
4.                          King to E7                King to G7
5.                          Rook to E6                King to G8
6.                          King to F6                King to F8
7.                          King to G6                End of book

Series 2

Move Sequence               White Moves               Black Moves

1.                          Rook to E5                King to F7
2.                          King to D5                King to F6
3.                          King to D6                King to F7
4.                          Rook to E6                King to F8
5.                          Rook to E7                King to G8
6.                          King to E6                King to F8
7.                          King to F6                King to G8
8.                          King to G6                End of Book


Study Position 2

Series 1

Move Sequence               White Moves               Black Moves

1.                          King to F5                King to E7
2.                          King to E5                King to D7
3.                          King to D5                King to E7
4.                          King to C6                King to E6
5.                          Pawn to D5                King to E7
6.                          King to C7                End of book

Series 2

Move Sequence               White Moves               Black Moves

1.                          King to F5                King to E7
2.                          King to E5                King to D7
3.                          King to D5                King to E7
4.                          King to C6                King to D8
5.                          Pawn to D5                King to C8
6.                          Pawn to D6                End of book

Series 3

Move Sequence               White Moves               Black Moves

1.                          King to F5                King to E7
2.                          King to E5                King to D7
3.                          King to D5                King to E7
4.                          King to C6                King to D8
5.                          Pawn to D5                King to C8
6.                          Pawn to D6                King to D8
7.                          Pawn to D7                End of Book


Study Position 3

Series 1

Move Sequence                White Moves              Black Moves

1.                           Pawn to D5               Pawn to D5
2.                           King to F2               King to E4
3.                           King to E2               Pawn to D4
4.                           King to D2               Pawn to D3
5.                           King to D1               End of Book

Series 2

Move Sequence               White Moves               Black Moves

1.                          Pawn to D5                Pawn to D5
2.                          King to F2                King to E4
3.                          King to E2                King to D4
4.                          King to D2                King to C4
5.                          King to C2                Pawn to D4
6.                          King to D2                Pawn to D3
7.                          King to D1                End of Book


Study Position 4

Series 1

Move Sequence               White Moves               Black Moves

1.                          Pawn to F6                King to F7
2.                          Rook to H8                End of Book


Study Position 5

Series 1

Move Sequence               White Moves               Black Moves

1.                          Knight to H6              King to H8
2.                          Queen to E5               Queen to E5
3.                          Knight to F7              End of Book


Study Position 6

Series 1

Move Sequence               White Moves              Black Moves

1.                          Knight to B5             Pawn to B5
2.                          Bishop to B5             Knight in file B to D7
3.                          Queen side castle        End of Book
                            (see "Castling")

Series 2

Move Sequence               White Moves              Black Moves

1.                          Knight to B5             Pawn to B5
2.                          Bishop to B5             Knight in file B to D7
3.                          Queen side castle        Rook to D8
                            (see "Castling")
4.                          Rook to D7               Rook to D7
5.                          Rook to D1               Queen to D6
6.                          Bishop in file B to D7   Knight to D7
7.                          Queen to B8              End of Book

Series 3

Move Sequence               White Moves              Black Moves

1.                          Knight to B5             Pawn to B5
2.                          Bishop to B5             Knight in file B to D7
3.                          Queen side castle        Queen to E6
                            (see "Castling")
4.                          Bishop to F6             End of Book.

Series 4

Move Sequence               White Moves              Black Moves

1.                          Knight to B5             Pawn to B5
2.                          Bishop to B5             Knight in file B to D7
3.                          Queen side castle        Queen to B4
                            (see "Castling")
4.                          Bishop to F6             End of Book

Series 5

Move Sequence               White Moves              Black Moves

1.                          Knight to B5             Pawn to B5
2.                          Bishop to B5             Knight in file B to D7
3.                          Queen side castle        Queen side castle
                            (see "Castling")
4.                          Bishop to A6             End of Book

Study Position 7

Series 1

Move Sequence               White Moves              Black Moves

1.                          Rook to D5               Pawn to E5
2.                          Knight to F5             Pawn to F5
3.                          Queen to C5              Queen to C5
4.                          Rook to D8               Queen to F8
5.                          Bishop to D5             End of Book

Series 2

Move Sequence               White Moves              Black Moves

1.                          Rook to D5               Pawn to D5
2.                          Bishop to D5             King to F8
3.                          Knight to F5             Queen to E5
4.                          Queen to C5              King to E8
5.                          Knight to G7             King to D7
6.                          Bishop to E6             End of Book

Series 3

Move Sequence               White Moves              Black Moves

1.                          Rook to D5               Pawn to D5
2.                          Bishop to D5             King to F8
3.                          Knight to F5             Queen to D7
4.                          Queen to C5              King to E8
5.                          Bishop to E6             End of Book

Study Position 8

Series 1

Move Sequence               White Moves              Black Moves

1.                          Queen to G4              Queen to B5
2.                          Queen to C4              Queen to D7
3.                          Queen to C7              Queen to B5
4.                          Pawn to A4               Queen to A4
5.                          Rook to E4               Queen to B5
6.                          Queen to B7              End of Book

Series 2

Move Sequence               White Moves              Black Moves

1.                          Queen to G4              Queen to B5
2.                          Queen to C4              Queen to D7
3.                          Queen to C7              Queen to A4
4.                          Rook to E4               Queen to B5
5.                          Queen to B7              End of Book

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