Kacper Piorun

Kacper Piorun (born 24 November 1991) is a Polish chess grandmaster, a five-time world champion in chess problem solving, and two-times winner of the Polish chess championship.

Kacper Piorun

Kacper Piorun (born 24 November 1991) is a Polish chess grandmaster, a five-time world champion in chess problem solving, and two-times winner of the Polish chess championship.