Chess Puzzle Generator Lab

Generator settings

Method

Mate depth

Population

Iterations

Advanced parameters

Min. pieces

Max. pieces

Counts both kings and all pawns (repository default: 5–8).

Random seed

Node limit per candidate

Candidates that exceed the node limit are treated as unsolved so a run cannot stall.

Seed injection (mate-3 preset): 4 genomes from inputs/fen, refreshed every 4 iterations Show orthodox positions only

Sorted by fitness. Click a puzzle to open it on the board.

None yet. Choose a method and press Generate puzzles.

FEN

Generate puzzles or analyze a FEN to see the key move, main line and defenses.

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