This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Dawid przepiorka. Dawid Przepirka Polish chess player chess composer and mathematician Dawid Przepirkas polnischer Schachspieler Komponist und Mathematiker Dawida Przepirki polskiego szachisty kompozytora matematyka Henri Weenink David Przepirka Master of Strategy collection of his chess problems and end games thematically