More than 4 years ago on Jan 8, 2014 Nick Broom published one of the first real-world decision model “Credit Card Application” with an objective to demonstrate the newly introduced DMN standard version 1.0. Now, when many vendors announced their support for DMN, we want to use this simple model as June-2018 Challenge to compare different implementations using the best DMN practices and the latest versions of your favorite BR&DM tools.