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Jossie Calderon
Jossie Calderon
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In the following position, McDonald states that 14. d4! is the move that gives a large advantage to White.

r1bqr1k1/2p2pp1/pbn4p/1p1np3/P7/1BPP1N2/1P3PPP/R1BQRNK1 w - - 0 14

However, 14. axb5 wins a pawnnot one but two pawns and without any unnecessary complications, such as opening the center up and allowing Black some freedom.

After using Stockfish to verify this, I wonder why (or how) GMs write mistakes in opening books, when they have engines to double-check. Why does this happen?

In the following position, McDonald states that 14. d4! is the move that gives a large advantage to White.

r1bqr1k1/2p2pp1/pbn4p/1p1np3/P7/1BPP1N2/1P3PPP/R1BQRNK1 w - - 0 14

However, 14. axb5 wins a pawn without any unnecessary complications, such as opening the center up and allowing Black some freedom.

After using Stockfish to verify this, I wonder why (or how) GMs write mistakes in opening books, when they have engines to double-check. Why does this happen?

In the following position, McDonald states that 14. d4! is the move that gives a large advantage to White.

r1bqr1k1/2p2pp1/pbn4p/1p1np3/P7/1BPP1N2/1P3PPP/R1BQRNK1 w - - 0 14

However, 14. axb5 wins not one but two pawns and without any unnecessary complications, such as opening the center up and allowing Black some freedom.

After using Stockfish to verify this, I wonder why (or how) GMs write mistakes in opening books, when they have engines to double-check. Why does this happen?

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Jossie Calderon
Jossie Calderon
  • 2.4k
  • 11
  • 28

Why, or how, can GMs make mistakes in opening books?

In the following position, McDonald states that 14. d4! is the move that gives a large advantage to White.

r1bqr1k1/2p2pp1/pbn4p/1p1np3/P7/1BPP1N2/1P3PPP/R1BQRNK1 w - - 0 14

However, 14. axb5 wins a pawn without any unnecessary complications, such as opening the center up and allowing Black some freedom.

After using Stockfish to verify this, I wonder why (or how) GMs write mistakes in opening books, when they have engines to double-check. Why does this happen?