Tetro Stack, inspired from Friedman’s Pentomino Puzzles. Put the five tetrominoes to the grid such that they don’t overlap or cover any circle. Gravity acts on these objects, so for each tetromino and circle, there is at least one square occupied by the tetromino/circle such that the square directly below it doesn’t exist (it’s on the bottommost row) or is also occupied by a tetromino. Medium?
I hope you understand my vague rules above 😛 Puzzle 24 to be posted within 10 hours.