snarkcatalystvariantsfour Snark catalyst variants Top: original variant by Mike Playle Left: Shannon Omick (better clearance on a diagonal) Right: Heinrich Koenig (better clearance on a different diagonal) Bottom: Simon Ekstrom (better clearance on two diagonals) https://conwaylife.com/wiki/Snark https://www.conwaylife.com/patterns/snarkcatalystvariants.rle