Riffle located (500 solvers):
September 08, 2022

Riffle located (1000 solvers):
February 08, 2023

Riffle located (1500 solvers):
September 05, 2023

Riffle located (2000 solvers):
February 14, 2024

Riffle located (2500 solvers):
August 19, 2024

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