# Speed Climbing

> An independent, browser-based reimplementation of IFSC competition speed climbing on the
> standardised 15 m route, with a multi-contact physics model that reports what limits a record
> time and shows the convergence study behind that answer.

The wall, the grid and all 31 hold positions come from the IFSC Speed Licence Rules (v1,
2022-02-01); the competition rules from IFSC Rules 2024 v1.1 article 9 and Annex 4. The route is a
published competition specification, reproduced from the written standard - not extracted from any
game.

## What is on the page
- A playable race on the real route geometry against a paced rival, with the real 0.100 s
  false-start rule and the real display rounding (down, to 1/100 s). Tap or press Space to climb;
  works on phones and desktops.
- The model's finish time, 6.844 s (6.714 s climbing + 0.130 s reaction) for one calibrated
  70 kg body, against world records of 4.54 s (men, Zhao Yicheng, 2026-05-10) and 5.99 s (women,
  Emma Hunt, 2026-07-04).
- An elasticity table saying what sets that time: the FOOT's friction-and-adhesion budget
  (-0.343, -0.301) and limb repositioning speed (-0.255), then arm force (-0.209). Leg force
  (-0.008), hand friction and hand-hold adhesion (0.0000) are not limits at all; body mass
  (+0.752) is the largest lever.
- A convergence table on four discretisation axes, including one axis reported as an honest
  negative (torso segment count does not change the answer at all).
- The full world-record progression (23 men's, 23 women's records).
- Corrections to published sources, gaps where the specification does not decide the answer, and a
  provenance marker on every class of quantity.

## Files
- /            the app and the full write-up in static markup
- /CREDITS.txt attribution, what differs from the real sport, and every bug the harnesses caught
- /LICENSE.txt MIT

Not affiliated with the International Federation of Sport Climbing.