Pentomino (Tetris) Puzzle by Henry Dudeney

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This brain teaser has a single solution waiting to be found. Twelve pentominoes and one square piece make up the puzzle, which was first crafted by Henry Dudeney, an inspiration for the classic game Tetris. For more information on this intriguing challenge, visit https://www.youtube.com/watch?v=wZ1E_CM7MqA&t=306s. Filaments come in five distinct colors: red, blue, green, black, and grey. Red filaments can be found at https://amzn.to/2sKrEX6. Blue filaments are available on Amazon at https://amzn.to/2kYysvS. Green filaments can be purchased online at https://amzn.to/2Juax1P. Black filaments are sold on Amazon at https://amzn.to/2sOXhxQ, and grey filaments can be found at https://amzn.to/2McQOFR.