September Bidding Contest

How would you bid?

Four new bidding problems from Lionel Sebbane. Make your choices, compare them with the expert panel, and see how you score.

Here’s a preview with a first question to get you started!

How does it work?

• The contest is reserved for Premium and Premium+ subscribers.
• Four bidding problems are waiting for you. Trust your judgment, make your calls, and see how your answers compare with those of the experts.
• You have until September 20, 2026 to participate. After that date, submissions will be closed.

⚠️ If you enter more than once, only your first submission will be counted.

Join us on September 23 to discover the results!