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Blokus (Tetriminoes) (919)

Instruction:
Shade some cells black so that the black cells form the shapes of seven different tetriminoes. Each tetrimino shape is used exactly once. Shapes can be rotated but not reflected. Tetriminoes cannot touch along edges, but can touch at corners. If a corner is marked with a dot, then two tetriminoes touch at that corner. If a corner is not marked with a dot, then two tetriminoes do not touch at that corner.

Reference: WPF (1)

Examples:
WPF Puzzle GP 2020 - Round 4 (143)
Related puzzles:
Blokus (Pentominoes)
Tetromino Search
Tetroscope