The salient logical cue

 When you ask yourself "what is this position about?" you might get a logical answer. This is your salient logical cue. Triggered by the logical pattern that you recognize. For instance:

Black to move

4r2k/1p4bp/p2p2p1/3P4/P1R2p2/1P3Q1P/3qNPP1/6K1 b - - 0 28

Lalith, B, vs. Rathnakaran, K., Sharjah 2017

The problem is, you would love to grab Ne2 which is BPDO (Bad Pieces Drop Off). But you have a vulnerable backrank. So the logical question arises: can I take Ne2 in such way that I keep my back rank protected?

As you see, the logic prunes your tree of analysis before you even start to think about moves. The move you are looking for must have an "additional punch" or in other words, must come with tempo. That is CCT, but now restrained beforehand by the logical conditions you have set.

28 ... Qe1+ puts the queen on the e-line, thus protecting e8 from a distance. And the check is the additional punch.

Notice how much more fun solving puzzles has become!


Comments

  1. An aside (but related to the generation of logical pattern recognition):

    I’ve been working on a formal chess grammar for describing tactics based on contacts and weaknesses.

    After getting a fairly complete grammar generated defining weaknesses in a chess position, I posed the following question to Copilot (based on its own generated grammar):

    Given the following FEN describing a chess position ["4r2k/1p4bp/p2p2p1/3P4/P1R2p2/1P3Q1P/3qNPP1/6K1 b - - 0 28"], what are the weaknesses in this position?
    [Copilot]
    See my thinking
    Organizing my thoughts and creating a plan
    Analyzing FEN
    I’m looking at the FEN: "4r2k/1p4bp/p2p2p1/3P4/P1R2p2/1P3Q1P/3qNPP1/6K1 b - - 0 28".
    Let’s break it down:
    • Rank 8: Black rook on e8, black king on h8.
    • Rank 7: Black pawns on b7 and h7, black bishop on g7.
    • Rank 6: Black pawns on a6, d6, and g6.
    • Rank 5: White pawn on d5.
    • Rank 4: White pawn on a4, white rook on c4, black pawn on f4.
    • Rank 3: White pawns on b3 and h3, white queen on f3.
    • Rank 2: Black queen on d2, white knight on e2, white pawns on f2, g2, and h2.
    Black to move.
    Analyzing position and weaknesses
    I’m looking at the position: Black to move. The material is fairly balanced, but I need to check for weaknesses. Black's queen on d2 seems deep, and I’m wondering if it’s undefended. The white pieces are mostly defended, like the queen on f3, which is protected by the knight on e2 [COMMENT: this is delusional—the WQf3 CANNOT be defended by the WNe2]. The white rook on c4 is defended by the pawn on b3. Black's bishop on g7 is defended by the king on h8. The black queen might be a bit exposed, though. The white king on g1 seems somewhat safe, while black's king on h8 is more vulnerable.
    Analyzing weaknesses and loose pieces
    I’m looking at the position and noticing a few things. The black pawn on f4 is insufficiently defended, with only the queen on d2 protecting it [COMMENT: BPf4 is under-defended {2:1}]. There are also several loose pieces, like the black queen on d2, the rook on e8, and pawns a6 and d6, but none of them are currently under attack. The white side seems solid, with no immediate weaknesses [COMMENT: The WNe2 is under-defended {1:2}.]. The white pawn on d5 is defended by the pawn on e4 [COMMENT: This is delusional—WQf3 defends WPd5; there is NO WPe4], so it’s safe for now. The black king on h8 is somewhat protected by pawns and the bishop.
    Identifying weaknesses
    I’m looking at the position and identifying a few weaknesses. The black queen on d2, rook on e8, and pawns a6 [COMMENT: BPa6 is protected by BPb7] and d6 are loose but not under attack. The black pawn on f4 is insufficiently defended, with only the queen protecting it. The white pawns on h3 and h2 might be loose [COMMENT: This is delusional—WPh3 is defended {2:0} and there is no WPh2] but are defended by other pieces. The black king on h8 is somewhat exposed, with some dark-square weaknesses around it. Overall, the main weakness is the black pawn on f4.
    Done

    [End Copilot]

    It did NOT identify the WNe2 as an “under-defended” weakness. Consequently, it is incapable of identifying the tactical sequence that allows the WNe2 to be safely captured, gaining material.

    It is a myth that LLM AI is “intelligent.”

    ReplyDelete

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