Scrabble

You are player 1, in the bottom left pocket. The other players are AI. The rules of Scrabble: 

1. Before the game starts, each player draws one tile. The order of turns is determined by the alphabetical order of the tiles, with the wildcard _ taking absolute precedence. 

2. Each player starts with 7 tiles on their rack. 

3. During each player's turn, they can use it to place tiles (placement rules below), exchange tiles with the pile/bank, or skip their turn if they so choose. A player cannot do both actions at once. 

4. When placing tiles, the new tiles must all be in a single row or column and create valid words. Valid words are confirmed by the dictionary and are not yet played. When placing a wildcard, the player must declare what letter the wildcard is. In this game, you will see a dialog popup asking you to enter the wildcard's value manually. 

5. Once a player's turn is over, their newly placed tiles are examined, or challenged. Challenging means to question the validity of a move. If a play is successfully challenged, the player forfeits their move and the tiles return to them. Else, if their move is completely valid, the score of the word is determined by the sum of the individual letter scores multiplied by letter score premiums, then multiplied by word score premiums. 

6. The game ends when all tiles in the bank are used up and at least one player has no more tiles to place, or when four consecutive exchanges have occurred. The player with the highest score wins.