{"name": "Medium Conway's Game - Pentadecathlon (Authentic)", "description": "Authentic Pentadecathlon from Conway literature - period 15 perpetual oscillator", "gridWidth": 20, "gridHeight": 15, "initialPattern": [{"x": 9, "y": 6, "alive": true}, {"x": 14, "y": 6, "alive": true}, {"x": 7, "y": 7, "alive": true}, {"x": 8, "y": 7, "alive": true}, {"x": 11, "y": 7, "alive": true}, {"x": 12, "y": 7, "alive": true}, {"x": 13, "y": 7, "alive": true}, {"x": 14, "y": 7, "alive": true}, {"x": 15, "y": 7, "alive": true}, {"x": 16, "y": 7, "alive": true}, {"x": 9, "y": 8, "alive": true}, {"x": 14, "y": 8, "alive": true}]}