Open console to use

GitHub: https://github.com/CWKSC/MyLib_js

Let try

new CTFTool.BruteForceString_backTracking(4)
.add(a => a[0] + a[1] == 210)
.add(a => a[1] + a[2] == 205)
.add(a => a[2] + a[3] == 200)
.add(a => a[0] - a[1] == -6)
.run(true, true);