How does it work?

Trainer’s perspective (Desktop)

Student’s perspective (App)

Frequently Asked Questions

As a trainer you create groups, invite your students and upload your own training material (PBN). Students download the Redoublet app and can play your games straight away. Afterwards they see their score, an explanation (optional) and the DDS score, and they can replay the game if they wish. Watch the videos above for more details. Students also have access to our Analyse module: they can take photos of any bridge game and then receive the DDS score, and they can replay the game against our robot. See also the video.

It's free for both the trainer and the student. As a trainer you can create unlimited groups and competitions. Students get access to the app, including the analyse and learn modules — these are and will remain free, so your teaching material always stays freely available to your students. Every new student account also starts with a 30-day free trial of Redoublet Pro, and after the trial a free account still plays 10 games a month in the open Redoublet competitions. Students who want unlimited play pay €5.99 a month (cancel anytime).

Students don’t need to sign up themselves — the trainer (you) creates an account for them. If a student already has an account, they are automatically invited to your group.

Yes, you can add your own teaching materials by using the upload PBN feature.

No, there are no limits on the number of groups, students, or competitions.

The learn module is part of the competition module (it is a form of competition). The learn module always remains accessible to students, even after their trial period has expired or if they don’t have a pro account.

Yes. Alongside the competitions you create for your group, any student with a Pro account or an active trial can set one up: a name, one-off or recurring (daily or weekly), our deals or their own PBN file, matchpoints or IMPs, and an email invitation for the players. It is the same competition engine your groups run on.

Partner play is coming soon. Two students sit North and South at the same table, wherever each of them is, with our robots as their opponents — the same deals, the same competitions and the same scoring as when they play alone. It is in testing now, and we will announce it here and in the app as soon as it opens to everyone.

You choose the system you actually play. The robot bids 5-card major (NBB club), 5-card major (NBB beginner), 2/1 Game Force, SAYC or Swedish Modern. Click a system to open its system card; the cards for the other three are on the way. Whichever system you pick, your opponents always bid and play 5-card major (NBB club).

Our robot combines fixed bridge rules with simulations to decide its bids and plays. It uses only the information available to you as a player — there is no peeking at the other hands. It follows standard conventions (see the bidding system above) but will deviate when its simulations point to a better option. As a result, it can play brilliantly one moment and make a beginner's mistake the next. Overall, we'd rate its level as above-average.

Claims — both those made by your opponents (EW) and the verification of your own (NS) claim — are settled by double dummy analysis. It plays out every possible distribution of the remaining cards and determines exactly how many tricks can be made. This means an opponent's claim may rely on the location of cards you cannot see — that is the nature of a double dummy result. To be clear: during play the robot does not peek at all four hands; it plays only on the information available to it.

Both work, on one account. Play Online runs in any browser at redoublet.com/play, with nothing to install. The app — free on iOS and Android — adds the two camera features: Analyse Game and Score Tracker.

For any other questions, please contact [email protected]