# Questions tagged [candidate-move]

A candidate move is a move that you consider to be interesting in a position. Usually, the term is used for the process of calculating variations. Every variation begins with a candidate move.

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### How to come up with candidate moves or ideas in positions "with no action"?

Here is an example position: [fen ""] [Startply "40"] 1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 exd4 5. e5 Nd5 6. cxd4 Bb4+ 7. Bd2 O-O 8. a3 Ba5 9. Bc4 Nb6 10. Ba2 Bxd2+ 11. Qxd2 d5 12. ...
• 226
101 views

### Making the best move

It took me a while to realize, that my best move could actually be a blunder or a relatively insignificant move or the wrong approach etc. I have the impression that there should be a recipe or some ...
• 189
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### The most efficient valid move generation for minimax

Problem I am creating a chess engine in Python using Minimax algorithm (with alpha/beta pruning) but I have some issues with performance. Currently the thinking time looks something like this for a ...
• 252
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### Why is Bd6 better than Be7, Bc5 and Bb4?

[FEN "r1bqkb1r/p4ppp/2p2n2/3p4/8/2N5/PPP1BPPP/R1BQK2R b KQkq - 1 9"] Be7 protects knight from getting pinned, Bc5 pins the pawn on f2 after Whites, castles, and Bb4 pins the knight. Whats ...
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### What is the best move for black in this game?

[FEN "1k5r/p1p2pq1/2n5/1p1p3n/1P1Pp2Q/P1P1P1P1/1B1K2B1/7R b - - 0 1"] Today I was playing a game with myself only. This is the condition now it is black to move. What can be the best move in this ...
138 views

### Why is the engine evaluating against bringing more attackers in this position?

[FEN "r2qk2r/pQpbbppp/n2p1n2/3Pp3/4P3/2N1BN2/PPP2PPP/R3KB1R w KQkq - 0 1"] This position is evaluated at +6.4l but if I capture with the Bishop (Bxa6) it drops down to +0.8. Why does the evaluation ...
• 1,098
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### Why does Stockfish suggest capturing a bishop in this position when my opponent can fork my king and rook?

The position in question is: [FEN ""] [StartPly "13"] 1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nc6 4. Nc3 e5 5. Ndb5 Bb4 6. Bg5 Bxc3+ 7. bxc3 Qa5 8. Qd5 Nge7 9. Nd6+ Kf8 10. Qxf7# 1-0 It's black turn and the ...
• 1,098
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### Amount of search per decision: GMs versus AlphaZero and Stockfish [duplicate]

In Demis Hassabis' presentation at the the Kinds of Intelligence Symposium in January 2018, grandmasters are compared to AlphaZero and Stockfish along an interesting metric: how many moves are ...
• 3,525
1 vote
291 views

### Algorithms to score chess moves [duplicate]

How to score a chess move, which techniques are used to figure out how good a move is?
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### Why does ChessMaster recommend 24. Rg3 in this position?

I reached this position when playing against ChessMaster's cyber personality Laura. The engine recommends the line starting with 25. Rg3: [FEN ""] [White "Bad_Bishop"] [Black "Laura"] [StartPly "48"] ...