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The field of the metal-rich open cluster NGC 6253 has been surveyed in asearch for variable stars. A total of 25 new variables were detected, 14 ofwhich are bright stars with 13<V<15 mag. This domain was not covered in anearlier work by de Marchi et al. (2010). Four variables, including threeshort-period eclipsing binaries, are candidate blue straggler stars. Two newdetached eclipsing binaries at the turnoff of the cluster and another one onthe subgiant branch were identified. These three systems deserve a detailedfollow-up study aimed at a determination of the age and distance of NGC 6253.New photometry for 132 stars from the sample of de Marchi et al. (2010) isprovided.

The Clusters AgeS Experiment (CASE). Variable stars in the field of the open cluster NGC 6253