Chess Visualization Course: Book 1 - General Tactics by Ian Anderson

By Ian Anderson

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Visualize the position after the moves 39 d8=Q+1 Rxd8 40 exd8=Q+ Qxd8. What is the material balance? Rf1, mate. 39 e8=Q allows 39…h2+. CHAPTER 5. EXCHANGES INVOLVING A PASSED PAWN || 43     4 ply                             A08       4 ply                          B02  93. White is up the exchange for a pawn. The count will be 1-2 after White pushes his pawn to d8, but Black won’t be able to take with his cheapest piece.

CHAPTER 5. EXCHANGES INVOLVING A PASSED PAWN This chapter features a series of exchanges involving a passed pawn. Such exchanges either occur after the promotion of a passed pawn or the capture of a piece that is protected by a passed pawn. The resulting material balance depends on the number and value of the pieces involved in the exchanges. There are several ways that the side with the passed pawn can gain an advantage: — If the queening square is covered by an even number of attackers and defenders of the same value, then White will win a piece for a pawn – see exercises 105, 106, 107, and 108; — If Black has an extra defender, then White can give up his pawn to reach a won ending – see exercises 89, 90, 113, and 114; — If Black’s first defender is a Rook, while White controls the queening square with a minor piece, then White will win at least the exchange for a pawn – see exercises 97, 98, 109, 110, 115, 116, and 117; — If Black’s cheapest defender is a Rook and White can block the Rook from the queening square with a minor piece, then White will win at least the exchange for a pawn – see exercises 99 and 100; — If Black is unable to take with his cheapest defender (a minor piece), but is forced to take with a Rook instead, then White will win at least the exchange for a pawn – see exercises 93, 94, 95, and 96; — If White has connected passed pawns on the 7th rank, then White will win at least a piece for two pawns – see exercises 91, 92, 101, 102, 103, and 104; and — If Black is defending with his Queen, while White’s Queen is not involved in the exchanges, then White will win Black’s Queen – see exercises 119 and 120.

White is down the exchange and a pawn. The count will be 2-4 on f8 after White pushes his pawn, but Black's second defender is his Queen. Visualize the position after the moves 27 f8=Q+ Rxf8 28 Rxf8 Qxf81 29 Bxf8+ Rxf8. What is the material balance? 120. The count will be 3-4 after White occupies d8, but Black is defending with his Queen. Visualize the position after the moves 26 Rd81 Nxd8 27 exd8=Q Rxd8 28 Rxd8+ Qxd8 29 Bxd8 Rxd8. What is the material balance? Qd7 loses to 29 Qc3+ Kh7 30 Qh8, mate.

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