I describe below students’ first attempt to solve a problem in the class. The problem is a classical game often used in problem solving classes. In using this as the introductory problem in the class, I had two goals: to initiate students’ work in small groups, and to introduce them to arguably the most basic strategy in problem solving – creating and organizing data so as to yield useful information. Students worked on problem 1 using concrete tiles. Each group of four had two teams that played each other in pairs.