Timothy Calford CalfordMath

## sudoku
//ref: https://codereview.stackexchange.com/q/199771

//CalfordMath edit notes:
//I placed the "test" lambda inside of "solver" to acheive a single Lambda function (nested recursive).
//I'm not sure this optimizes anything computationally, and perhaps it makes the code less easy to follow,
//but I find it satisfying to have everything wrapped in a single function :)


solver = LAMBDA(grid,
    LET(
	//ref: https://codereview.stackexchange.com/q/199771

	//CalfordMath edit notes:
	//I placed the "test" lambda inside of "solver" to acheive a single Lambda function (nested recursive).
	//I'm not sure this optimizes anything computationally, and perhaps it makes the code less easy to follow,
	//but I find it satisfying to have everything wrapped in a single function :)


	solver = LAMBDA(grid,
	LET(