The presentation of this is nice but if you're hoping this might blow up like Wordle then you'd need a few more gimmicks because what you've built there is basically just a Countdown Conundrum (https://wiki.apterous.org/Conundrum) laid out as a square; and there's already lots of these puzzles online (plus literally decades of TV footage from Countdown too, eg https://www.youtube.com/watch?v=-n9aILIF_ms).