CSP

Universal Constraint Satisfaction Solver — P/NP/P Sandwich
Zero dependencies. Pure Python. Indexed ONES/ZEROS collections.

Endpoints

POST/csp — Universal CSP solver (variables + domains + ONES)
POST/color — Graph coloring
POST/nqueens — N-Queens puzzle
POST/sudoku — 9×9 Sudoku solver
GET/health — Health check
GET/paper — Technical paper
GET/docs — OpenAPI docs

Playground

N-Queens
Sudoku
Coloring