The KamaSuma application has a plurality of geometrical structures and circular pawns having a numerical value to play with. In a specific game, the app presents a structure that includes a central polygon of N sides, as well as N identical side polygons. Each side polygon has a site (a node) in each of its corners, where some sites are common to two adjacent side polygons. The app also presents circular pawns, each having a numerical value written inside the circle.
Initially, a pawn bank and a geometrical structure are presented to the user. A given sum number is written in the middle of the central polygon. The user is challenged to place the numerical pawns on the sites such that the sum of all the pawns located on each side polygon is the given sum. Once at least one pawn is placed on a side polygon, the sum of all pawns placed on that side polygon appears in the middle of the side polygon. When the sums on all side polygons equal the given sum, the game ends, and the user gets a score, which depends on the difficulty level. The user may click on a first pawn on a first site and then on a second pawn placed on a second site to swap them.