4enginecordership_synth14-glider recipe for 4-engine Cordership, minimum population 134 Completed 21 April 2017, following Luka Okanishi's discovery of a three-glider switch engine synthesis 14-glider synthesis of a minimum population 4-engine Cordership. https://conwaylife.com/wiki/4-engine_Cordership https://conwaylife.com/patterns/4enginecordership_synth.rle