GODOT is great: Marching squares and an angry triangle ...

Simple marching squares with OpenSimplexNoise and _draw(). Slightly over 20fps with 7200 squares (each 16x16px).

Resolving Ambiguities in Marching Squares

Square

2 Square: Play 2 Square online for free now.

Java Magic Square 2d Array - Know Program

Teach Marching Basics Virtually!

4.6.10. In many least squares applications, the underlying data matrix Am × n does not have independent columns—i.e., rank(A) ∈ℛ(A^T), and if x = is any least squares solution (i.e., A^T Ax = A^T b), prove that the estimate defined byŷ = t^T x = ∑i=1^n ti âiis unique in the sense that ŷ is independent of which least squares solution x is used.

Pieced Squares: Quick Quarter-Square Triangles (QST)