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Adam Ondra on the sport climbing route Silence, the hardest free climbing route in the world and the first-ever at 9c (French), 5.15d (American YDS), and XII+ (UIAA).. The two main free climbing grading systems (which include the two main free climbing disciplines of sport climbing and traditional climbing) are the "French numerical system" and the "American YDS system". [2]
Silence (also Project Hard), is a 45-metre (148 ft) severely overhanging sport climbing route in the granite Hanshelleren Cave in Flatanger Municipality, Norway.When Czech climber Adam Ondra made the first free ascent on 3 September 2017, it became the first rock climb in the world to have a proposed climbing grade of 9c (5.15d), and it is an important route in rock climbing history.
As of October 2024, the hardest single-pitch redpoint was at the grade of 9c (5.15d) for men and 9b (5.15b) for women. The hardest onsight was at the grade of 9a (5.14d) for men and 8c (5.14b) for women. The hardest boulder solved was at the boulder grade of V17 (9A) for men and V15/V16 (8C/8C+) for women.
Pete Whittaker (born 1991) is a British professional rock climber.He is one half of the duo known as the Wide Boyz, along with his climbing partner Tom Randall.Whittaker came to notability from crack climbing, including the first ascent of the world's hardest off-width climb, the Century Crack.
Russell Cook (born 13 March 1997), also known as Hardest Geezer, is an English endurance athlete from Worthing, West Sussex. In April 2024, Cook became the first person to run the entire length of Africa from the southernmost to the northernmost point of the continent as part of Project Africa .
Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...
Maze: Solve the World's Most Challenging Puzzle (1985, Henry Holt and Company) is a puzzle book written and illustrated by Christopher Manson.The book was originally published as part of a contest to win $10,000.
The hardest substance in the DC Universe. Often used in the Legion of Super-Heroes comics, especially by Element Lad, who uses his transmutation ability to craft prisons and shields from it. Inoson E. E. Smith's SkyLark series: A synthetic metal; has "the theoretical ultimate in strength possible for any material possessing molecular structure".