Core-shell particles, hydrogel, microgels, pattern formation, polymer particles, self-organization phenomena Especially binary mixtures of such particles exhibit unique adsorption behavior that manifests in adsorption races to the interface, resulting in the micro-pattern formation of binary particles as well as in a suppression of the coffee-ring effect. Keywords: core-shell particles; hydrogel; microgels; pattern formation; polymer particles; self-organization phenomena EN core-shell particles hydrogel microgels pattern formation polymer particles self-organization phenomena 1 1 1 10/07/22 20221004 NES 221004 B Adsorption Races of Binary Colloids b The surface modification of colloidal particles by soft hydrogels provides a means to control the adsorption behavior at the air/water interface of sessile droplets.