<p>Traditional assessments of visual pattern memory difficulty rely predominantly on the number of items, overlooking other potential influential factors. This study aimed to identify and analyze several variables affecting performance in a visual pattern memory task. We conducted a computer-based visual pattern memory experiment with 20 participants. The paradigm systematically manipulated both the quantity and spatial arrangement of target stimuli while controlling for eye movements. Performance data were analyzed using generalized linear mixed models (GLMMs) and linear mixed models (LMMs) to identify significant predictors of task difficulty. Performance was influenced by the number and spatial relationships of target and non-target stimuli, their distance from the display center, and participants’ selection strategies. Dense stimulus patterns facilitated better recall than distributed configurations, suggesting an advantage of chunking strategies. Additionally, a left-side selection bias emerged, which was affected by target distribution. This study highlights the complexity of difficulty scaling in a visual pattern memory task. It demonstrates that incorporating multiple quantified aspects of visual stimuli, including spatial configuration, target distribution, and behavioral strategies, is essential for developing adaptive cognitive training programs that rely on spatial information processing.</p>