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The king is protected by moving it to the corner and the rook prepares to be moved to e1 square if the knight takes e4. 4... Ng4?? 5. h3. A blunder as the knight is moved away from the center and after 5. h3 it will be kicked back to the f6 square leading to a lost tempo giving the White knight the chance to take the e5 pawn with the line 5 ...
In chess, a relative value (or point value) is a standard value conventionally assigned to each piece. Piece valuations have no role in the rules of chess but are useful as an aid to evaluating a position. The best-known system assigns 1 point to a pawn, 3 points to a knight or bishop, 5 points to a rook and 9 points to a queen. Valuation ...
The King's Knight Opening is a chess opening consisting of the moves: . 1. e4 e5 2. Nf3. White's second move attacks the e-pawn. Black usually defends this with 2...Nc6, which leads to several named openings.
The Traxler Counterattack, also known as the Wilkes-Barre Variation, is a chess opening that begins with the moves: . 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5!?. The opening is a variation of the Two Knights Defense [1] [2] where White has chosen the offensive line 4.Ng5, immediately attacking the f7-square with the knight and bishop, and Black has replied 4...Bc5, counterattacking the f2-square.
At the most basic level, White's third move attacks the knight that defends the e5-pawn from the attack by the f3-knight. White's apparent threat to win Black's e-pawn with 4.Bxc6 dxc6 5.Nxe5 is illusory—Black can respond 5...Qd4, forking the knight and e4-pawn, winning back the material with a good position. [ 7 ]
The second one, first seen in 2008 in a game between Topalov and Kramnik, is the flashy 12.Nxf7 (a full piece sacrifice), which leads to a wild attack after 12...Kxf7 13.e5 Nd5 14.Ne4 Ke7 15.Nd6 Qb6 16.Bg4 and White has a great position, strong knight on d6, control over the center and the light squares, and pressure against the weak e6 pawn.
After 2.Nf3 d5 a variation of the Queen's Pawn Game is possible. After 2.c4 d5 the opening is a Chigorin Defense. There are some lines that are unique to 1.d4 Nc6, most importantly 2.d5 which chases the knight away, usually to e5. The opening resembles an Alekhine's Defence but on the opposite side of the board.
However, 3.c3 is somewhat premature because the move: 1) takes away the most natural square for White's queen knight, [29] 2) temporarily creates a hole on d3, and 3) develops a pawn rather than a piece, leaving White behind in development [30] and not well placed to meet a counterattack in the center.