Load a Swiss event published on results.fmjd.org. The checker replays it round by round and compares each round's real pairing with the pairing the Annex 5 rules give. It also checks each real round against the hard rules.
Unofficial tool by Chippy Technologies. It is not an FMJD service and does not change any result or rating. It follows the FMJD Annexes, last update 21 August 2024. Annex 5 itself says programs solve colour and float problems in slightly different ways, so a difference is not automatically an error.
Open the event on results.fmjd.org.
Open List of players, select the whole page (Ctrl+A), copy, and paste it below.
Do the same for Round 1, Round 2 and every other round, pasting each one below the last.
A .json event file saved by Chippy's tools (the format of the samples).