Boggle is a word game invented by Allan Turoff and originally distributed by Parker Brothers. The game is played using a plastic grid of lettered dice, in which players attempt to find words in sequences of adjacent letters

How does Boggle Solver Work?
- Collect the letters of the board and make it unique (remove duplicates) and store to letCollect variable
- Variable letCollect use to find the word that the first letter of word is one of the letCollect
- Implement backtrack algorithm to find the suitable word