A Prefiltered Cuckoo Search Algorithm with Geometric Operators for Solving Sudoku Problems

Algorithm 6

Revise3.

Input: 𝑥_𝑖,𝑐

Output: 𝐶𝐻𝐴𝑁𝐺𝐸

(1)  𝐶𝐻𝐴𝑁𝐺𝐸 ← false

(2)  Foreach 𝑣_𝑖∈𝐷(𝑥_𝑖) do

(3)   If ∄𝜏∈𝑐∩𝜋_𝑋(𝑐)(𝐷)with𝜏[𝑥_𝑖]=𝑣_𝑖 do

(4)    remove 𝑣_𝑖 from 𝐷(𝑥_𝑖)

(5)    𝐶𝐻𝐴𝑁𝐺𝐸 ← true

(6)   End If

(7)  End Foreach

(8)  Return 𝐶𝐻𝐴𝑁𝐺𝐸