People seem to follow certain intuitive rules when solving tasks within the realm of mathematics and sciences. The current study investigated one of these rules, namely the more A more B rule, with the help of the comparison-of-perimeters task. Rule application often leads to accurate conclusions, however, answering in-line with intuition could also lead to erroneous responses. Thus, the aim of the present study was to explore, if anodal transcranial direct current stimulation (tDCS) to the right ventrolateral prefrontal cortex (VLPFC) has beneficial effects on overcoming such intuitive interferences, as the VLPFC was found to play a key role in inhibition processes. Furthermore, it was of interest if general cognitive ability modulates potential stimulation effects. Twenty-two Austrian university students (6 males) underwent right-sided anodal tDCS to prefrontal regions, right-sided anodal tDCS to temporal regions and sham stimulation, with an intersession interval of approximately one week. The repeated-measures analyses did not reveal significant stimulation effects nor a significant influence of general cognitive ability. Hence, transcranial direct current stimulation did not enhance the cognitive ability of overcoming intuitive interference when solving geometrical tasks. Explanations for the absence of effects is believed to lie within the lack of feedback, task characteristics, item selection, stimulation parameters, and sample size. However, the study offers important new insights on the characteristics of the comparison-of-perimeters task as well as on transcranial electrical stimulation and contributes to shed some more light on the method, its effects and its stimulation parameters.