PRELIMINARY ROUND ROBIN (9 Rounds):
Round 1: Send challenges 5-Feb-2021. Start date: 20-Feb-2021.
Round 2: Send challenges 26-Feb-2021. Start date: 13-Mar-2021.
Round 3: Send challenges 26-Mar-2021. Start date: 10-Apr-2021.
Round 4: Send challenges 16-Apr-2021. Start date: 1-May-2021.
Round 5: Send challenges 7-May-2021. Start date: 22-May-2021.
Round 6: Send challenges 29-May-2021. Start date: 12-Jun-2021.
Round 7: Send challenges 18-Jun-2021. Start date: 3-Jul-2021.
Round 8: Send challenges 9-Jul-2021. Start date: 24-Jul-2021.
Round 9: Send challenges 30-Jul-2021 Start date: 14-Aug-2021.
PRELIMINARY ROUND ROBIN (9 Rounds):
Round 1: Send challenges 5-Feb-2021. Start date: 20-Feb-2021.
Round 2: Send challenges 26-Feb-2021. Start date: 13-Mar-2021.
Round 3: Send challenges 26-Mar-2021. Start date: 10-Apr-2021.
Round 4: Send challenges 16-Apr-2021. Start date: 1-May-2021.
Round 5: Send challenges 7-May-2021. Start date: 22-May-2021.
Round 6: Send challenges 29-May-2021. Start date: 12-Jun-2021.
Round 7: Send challenges 18-Jun-2021. Start date: 3-Jul-2021.
Round 8: Send challenges 9-Jul-2021. Start date: 24-Jul-2021.
Round 9: Send challenges 30-Jul-2021 Start date: 14-Aug-2021.