Two blockers hassling Rpentomino
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Two blockers hassling Rpentomino  
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Pattern type  Oscillator  

Number of cells  47  
Bounding box  30×19  
Period  72  
Mod  36  
Heat  34.1  
Volatility  0.97  
Strict volatility  0.70  
Discovered by  Robert Wainwright  
Year of discovery  1990  
 
 
 

Two blockers hassling Rpentomino^{[1]} is a period 72 oscillator. It was the first period 72 oscillator to be found,^{[2]} and was discovered by Robert Wainwright in July 1990.
It is made up of two blockers that hassle two blocks and an Rpentomino. It makes appearances in many large guns such as the gunstars and new gun 2. On January 12, 2016 Tanner Jacobi found a way to replace the blockers with still lifes.^{[3]}
Still lifesupported oscillator by Tanner Jacobi (click above to open LifeViewer) RLE: here Plaintext: here 
References
 ↑ Mark D. Niemiec. "Life Oscillators and PseudoOscillators". Retrieved on December 9, 2018.
 ↑ Dean Hickerson's DRHoscillators.rle oscillator collection, retrieved on May 15, 2009
 ↑ Tanner Jacobi. "Re: The Hunting of the New Herschel Conduits". Retrieved on December 9, 2018.
External links
 47P72.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 47 cells
 Patterns with 47 cells
 Patterns found by Robert Wainwright
 Patterns found in 1990
 Patterns that can be constructed with 17 gliders
 Oscillators
 Periodic objects with minimum population 47
 Oscillators with period 72
 Oscillators with mod 36
 Oscillators with heat 34
 Oscillators with volatility 0.97
 Oscillators with strict volatility 0.70
 Flipping oscillators