"B"-grade A grading system for bouldering problems, invented by John Gill for the Yorkshire and the Peak District. Now largely superseded by the "V" grading system.Blackpoint To complete a lead climb without falling or resting on the rope (hangdogging) at night without using artificial light. Also see redpoint, pinkpoint, whitepoint and eclipse.Bounce A deadly fall.Crater Hitting the ground at the end of a fall instead of being caught by the rope.Gumby An inexperienced climber.Sloper A sloping hold with very little positive surface. A sloper is comparable to palming a basketball.Smumping To quickly bump up a smear in small increments until a useful hold is reached.Whitepoint To complete a lead climb without falling or resting on the rope (hangdogging) at night using artificial light. Also see redpoint, pinkpoint, blackpoint and eclipse.