Dear all, The first task (simple decision) has been solved by a number of participants. Most of the models were able to survive in the proposed environment for quite a long time, and one entry used the optimal decision strategy, with only 22 neurons (out of 1000 available). The challenge is still running with a new task (cued decision, which might be simpler) and a new agenda (you have two months). You'll find instructions at https://github.com/rougier/braincraft the rules for the new task. Reminder: you have have 1000 neurons (leaky rate models), 100 seconds of training time and 10 runs for evaluation. The difficulty comes from the imposed constraints. You have to 2 months to propose your model. Best, Nicolas Rougier. -- Nicolas P. Rougier —— www.labri.fr/perso/nrougier Institute of Neurodegenerative Diseases, Bordeaux