The purpose of the work is to identify the features of the dynamics of cognitive and neurodynamic functions of children 6 years old when using the game of Go in combination with physical exercises of a playful nature. Material and methods. The study involved 30 children of the first classes, age 6 years. The children were divided into 3 groups of 10 people each. Two groups became experimental, one group-control. In the first experimental group, the children were engaged in the game of Go, in the second-the game of Go in combination with physical exercises, in the control group-according to the usual program of the extended day. Children of experimental groups were engaged in playing Guo twice a week for a month. Before and after the experiment, tests were carried out according to the Schulte method, and according to the method of Ermakov (computer program "Button Choice"). The experimental groups were engaged according to the developed methods, the children of the control group were engaged according to the standard program of the extended day group. Results. The use of the game of Guo has a positive effect on mental performance and on neurodynamic functions, while the effect on the neurodynamic functions is enhanced by the use of the game of Go in combination with physical exercises. It shows a significant influence of the nature of group lessons (the game of Go; the Game of Go in combination with physical exercises; the usual classes of the extended day program) on the cognitive and neurodynamic functions of children 6 years of age. Significant influence was found by Schulte's tests (work time on the first table and work efficiency) at p <0.001 and according to Ermakov's test to determine the speed of the selection reaction when changing the position of an object in the space of three attempts, p <0.001. Findings. The results of the research indicate that the use of the game of Guo has a positive effect on the indicators of cognitive functions and neurodynamic properties of 6-year-old children. Occupations only by the game of Go most affect mental performance, and occupations by playing Go, in combination with physical exercises, improves neurodynamic indicators most pronouncedly associated with the need to switch attention, the speed of choice reaction to objects whose position changes in space.