Flash

In lead climbing and sports climbing, a "Flash" is when a climber successfully completes a route on their first attempt without falling, but with prior knowledge about the route. This prior knowledge can come from observing other climbers, receiving advice, or studying the route beforehand.

Examples

In lead climbing and sports climbing, a "flash" refers to completing a climbing route on the first attempt without falling or resting on the rope, and with the benefit of some prior information about the route. This information might come from watching another climber, discussing the route, or receiving beta (tips and advice). The climber has not attempted the route before but has some knowledge of the holds and sequences.