A combination is a series of moves that accomplish a well-defined goal and provide a tangible benefit. Generally speaking, a combination will win material or provide a significant positional advantage.

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Maximum number of non-pawn pieces on the board

In a reachable game, what is the maximum sum of queens, rooks, bishops, knights, and kings on the board? For queens only, see Maximum number of queens possible
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Maximum number of queens possible

I was thinking about what is the maximum number of queens that can occur on the board after only legal moves. The theoretical upper bound would be 18, the original 2 queens plus all promoted pawns. ...
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Difference between tactic and combination?

What is the difference between a Tactic and a Combination? For reference, here is a game I played as white and I think I had a nice combination from move 16, but I am not sure if it is classified as ...
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What are the possibilities for checkmating with two bishops here?

Consider the following position: What are the possibilities for checkmating the white king within 16 moves?
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Did Reinfeld make a mistake?

One of the illustrative games featured in Fred Reinfeld's The Complete Chessplayer is a game between A. Muffang - P. Devos, France-Belgium 1948: [FEN ""] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. ...
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What is the origin of this breakthrough combination?

If you've spent enough time in the world of chess, it's not unlikely that you've come across the following position, with white to move and win, or an essentially identical one. You'll see plenty of ...
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What length of time should one spend looking for a combination, and what factors should one consider?

Taking time control into account, how long should one take when looking for a combination? Also, what factors should one consider when looking for a combination?