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Angular Chessboard Click/Highlight (N×N Board)

By FrontendAtlas Team · Updated Feb 9, 2026

Build an interactive N×N chessboard in Angular. Clicking a cell should highlight it and clear the previous selection. Add a size control so users can change board dimensions.

Render an N×N chessboard with alternating light/dark squares.
Add a numeric size input and clamp size between 2 and 20.

What you’ll build / What this tests

This premium angular coding focuses on Angular Chessboard Click/Highlight (N×N Board). You’ll apply components and state thinking with intermediate level constraints. The prompt emphasizes Build an interactive N×N chessboard in Angular. Clicking a cell should highlight it and clear the….

Learning goals

Translate the prompt into a clear angular API signature and return shape.
Apply components, state, event-handlers techniques to implement angular chessboard click/highlight (n×n board).
Handle intermediate edge cases without sacrificing readability.
Reason about time/space complexity and trade-offs in angular.

Key decisions to discuss

Define the exact input/output contract before coding.
Prioritize predictable edge-case handling over micro-optimizations.

Evaluation rubric

Correctness: covers required behaviors and edge cases.
Clarity: readable structure and predictable control flow.
Complexity: avoids unnecessary work for large inputs.
API discipline: no mutation of inputs; returns expected shape.
Testability: solution is easy to unit test.

Constraints / Requirements

Render an N×N chessboard with alternating light/dark squares.
Add a numeric size input and clamp size between 2 and 20.
Clicking a cell highlights it and removes highlight from the previously selected cell.
Show selected cell coordinates (row/column) in a status region.
Keep keyboard focus visibility and proper grid semantics.
Initial board renders at size 8×8.
Changing board size updates the grid and clears previous selection.
Clicking one cell activates only that cell.
Status text updates to the selected row/column.
If nothing is selected, status shows no selection.

Mini snippet (usage only)

// Example usage
const input = /* angular chessboard click/highlight (n×n board) input */;
const result = solve(input);
console.log(result);

// Edge case check
const empty = input ?? null;
const fallback = solve(input);
console.log(fallback);

// Expected: describe output shape, not the implementation
// (no solution code in preview)

Common pitfalls

Mutating inputs instead of returning a new value.
Skipping edge cases like empty input, duplicates, or nulls.
Overlooking time complexity for large inputs.