About 11-11 game
If you ever played Tetris game, you already know what to do here. Just to clarify, fill the line with blocks without having any empty space to score in this game.
However, what makes this Tetris different is that you cannot rotate the block and your above-placed blocks never come down. Instead, you can pick up any block and place anywhere you like. So you can put a block even between blocks where you could not place normally in a classic Tetris game.