Grids / Simulation / In-place transforms / Constraint systems
Explore grid algorithms in a brighter studio-style workspace with clean boards, structured traces, and the same interactive learning controls used across the rest of the visualizer.
Curated Problem Set
Update the board in place by counting live neighbors, writing transition markers, and then finalizing the next generation.
Matrix / Cellular automaton / Neighbor simulation
Rotate an n x n matrix clockwise by 90 degrees in place using a transpose pass followed by row reversals.
Matrix / In-place transform / Transpose + reverse
If any cell is zero, set its entire row and column to zero while reusing the first row and first column as marker storage.
Matrix / In-place markers / Row and column propagation
Return all elements in spiral order by shrinking the outer rectangle after each directional sweep.
Matrix / Simulation / Boundary contraction
Determine whether the filled cells obey Sudoku uniqueness rules by validating each digit against its row, column, and 3 x 3 sub-box.
Matrix / Constraint validation / Set bookkeeping