Excalibur electronic 975-3-EFG manual RemovingPress thea Piecekey, then the Setup key. Use2ndthe

White gets aand quick

of hisstrongpiecescenter. As early as 13.develRd1,- youopmentcan sense that Black is in danger. His king has no piece defenders; his forces seem passive while White's are aggressively coor- dinated. As often happens in such situations, White breaks through with a pawn push in the center, in this case 15. d4-d5!. It clears the board for White's more active forces. Petrosian, one of the best defenders of all time, tries repeatedly to trade queens, but White wisely rebuffs these offers, which would take much of the power off the board. White's d-pawn becomes a star, advancing all the way to the 7th rank. Because of this queening threat, White is able to sacrifice his queen for one of Black's defending rooks. In the final position, it's hopeless for Black because White will either promote his pawn to a queen or capture whatever Black uses to block on d8.

15. Robert Fischer vs. Reuben Fine,

Nine years beforeNew winningYork, 1963the world cham- pionship, Bobby Fischer played this Evan's Gambit (a variation of the Giuoco Piano) against his famous elder. Bobby sacrifices two pawns in order to get his pieces out quickly. Then he plays 14. h2-h4!, sacrific- ing another pawn to force the Black queen away from the g7-square. After that, Black's king will be stuck in the center and in danger of the h4-d8 diagonal. Bobby's final move, 17. Qg3!, forces Fine to resign, because he must move his queen from the critical black diagonal h4-d8. Even on 17. … Qxg3, White ignores the capture of his own queen and plays 18. Bf6 mate!

16. Lajos Portisch vs. Johannessen,

During the firstHavana,half of this1966game, a Queen's Gambit Slav, the great Hungarian grand- master Lajos Portisch locks up the center with a d4-e5 structure by move 14. This gives him a "beachhead" on e5 and makes it hard for Black to counterattack in the center, which is the standard antidote for an attack on the wing. The next stage starts with 16.

14

h4. Portisch announces his intention to attack on the kingside. He refrains from castling his own king into safety because he knows it’s safe enough in the center, at least for the time it will take him to break through with his attack. When Black tries to trade off pieces with 17. … Bxf3, Portisch sacrifices a knight for an unstoppable attack with 18. Bxh6 and then calmly moves his king to the second rank to bring his other rook into the game. His Rxh4 was another brilliant sacri- fice that crushes any hope of defense. In the final position, Black resigns because White will simply play 26. Rxh6+, winning the Black queen. If 26. … Qxh6, then White plays 27. Qxh6+ and will mate on h7.

At anyUsingtimeSetupduring aModegame when it is your move, you may change the position on the board by adding a piece, removing a piece, or chang- ing any of the pieces—for example, from a queen to a knight.

RemovingPress thea Piecekey, then the SETUP key. Use2ndthe

keys to move the blackDIRECTIONshape over a piece. Press GO to remove the piece. Press CLEAR to continue the game.

AddingPress theor Changingkey, thena Piecerepeated-

ly press the2nd key to select the correct pieceSETUP. You will see the piece flash on a square. Use the keys to move it to a DIRECsquare. ThenIONpress GO to register the piece. Press CLEAR to continue

the game.

SettingThis isUpanotherSpecialterrificPositionsfeature that allows you to solve problems that you see in magazines or news- papers, or that you make up your- self. It also allows you to enter game positions you want to play, or that you want LCD Chess to look at, perhaps using the Infinite Search level.

Normally, it is easier to start from an empty board to set up such prob- lems. So first, press 2nd then OPTIONS repeatedly until CLrBr (clear board) is displayed. Now press the SETUP key. You’ll see that your display board is automati- cally cleared, except for a White king.

Use thekeys to move the WhiteDIRECTIONking to the correct square and press GO. Continue by placing the Black king on it’s square. (You can’t leave the SETUP mode until both the White and Black king are placed.) Black pawns will be the next piece to place, but you may repeatedly press the SETUP key to select the piece type you want to place on the board. To change the piece’s color, use the θ /ν key. Don’t forget to press GO to register the piece on the board.

Follow this procedure until all the pieces in the problem or position are completely set up. Finally, press

ChessLEAR to play or to have LCD analyze the position.

Make sure that LCD Chess knows which color is to move. When you first enter setup mode, you may change the color of the side to move by pressing θ /ν.

If youOperationalmissed whereHintLCD Chess

moved, simply press and then . This will not UNDOaffect being able toGOrate your game.

1General. The two playersRules mustof Chessalternate in making one move at a time. The player with the white pieces moves first to start the game.

2. With the exception of castling (see below), a move is the transfer of a piece from one square to anoth- er square which is vacant or occu- pied by an enemy piece.

3. No piece, except the Knight may cross a square occupied by another piece.

4. A piece moved to a square occupied by an enemy piece cap- tures it as part of the same move. The captured piece must be imme- diately removed from the chess- board by the player making the cap- ture.

5. When one player moves into a position whereby he can attack the

15 King, the King is in “Check”. His