Krzysztof Jerzy Wielicki (born 5 January 1950) is a Polish alpine and high-altitude climber, regarded as one of the greatest Polish climbers in history. He is the fifth man to climb all fourteen eight-thousanders and the first ever to climb Mount Everest, Kangchenjunga, and Lhotse in winter. He is a member of The Explorers Club. Life He was born on 5 January 1950 in Szklarka Przygodzicka, Greater Poland. He graduated from the Wrocław University of Science and Technology (WUST) where he studied electronics. He chaired the Tourism Committee in the Polish Students' Association at the Faculty of Electronics at the WUST. He started climbing in Sokoliki in May 1970. In 1972, he participated in his first climbing course and a winter camp led by Wanda Rutkiewicz. In 1973, he achieved first major international climbing successes during a camp in the Dolomites. Together with Bogdan Nowaczyk, he became the first climber to complete within one day the Via Italiano-Francese on Punta Civetta. He later travelled to climb in the Caucasus Mountains, Hindu Kush and Pamir Mountains. On 17 February 1980, as a member of Polish national expedition led by Andrzej Zawada, Wielicki and fellow climber Leszek Cichy became the first to climb an eight-thousander in the winter. He was also the first to make successful winter ascents of Mount Everest, Kangchenjunga, and Lhotse, three out of four highest mountains in the world. He climbed Broad Peak during a solo expedition and made the first ever ascent of an eight-thousander from a base within 24 hours. He climbed Dhaulagiri and Shishapangma alone establishing new routes. He also made a solo ascent of Gasherbrum II and Nanga Parbat, a feat that was only witnessed by a few Pakistani shepherds. He participated in a number of expeditions on K2. In 1996, he made an ascent of the mountain along the north pillar together with two Italian climbers. He organized the 2002-2003 Polish winter expedition on K2, which failed to reach the summit. He made another attempt to climb an eight-thousander in the winter by organizing an expedition on Nanga Parbat (2006-2007) but was forced to turn back due to adverse weather conditions. In 2013, he led an expedition to climb Broad Peak in the winter. On 5 March, Adam Bielecki, Artur Małek, Maciej Berbeka and Tomasz Kowalski reached the summit for the first time in history during winter (Berbeka and Kowalski died while descending