Finian's Rainbow completed a magical afternoon for trainer Nicky Henderson and jockey Barry Geraghty as he landed the sportingbet.com Queen Mother Champion Chase at Cheltenham.
The duo had earlier claimed two Grade One victories, and Finian's Rainbow topped off the day in style as he overturned defending champion Sizing Europe after a thrilling finish.
The last fence was dolled off after an nasty fall on the first circuit and Finian's Rainbow passed the post a length and a quarter to the good after a long run up the hill.
The two-mile championship was an incident-packed race with Kauto Stone, half-brother to the great Kauto Star, crashing out at the very first obstacle.
Wishfull Thinking rocketed to the front under Richard Johnson and was pulling strongly before clattering the fence in front of the stands and suffering a nasty fall which saw him tumble through the rails and apparently into a crowd of bystanders.
That left 4-5 favourite Sizing Europe in front and Andrew Lynch was obliged to make the running with Geraghty hunting him round while the other runners just fell away.
Former champion Big Zeb just could not go with them and it had turned into a clear match race some way from home.
A lacklustre leap from Sizing Europe gave Finian's Rainbow a chance to move upsides and the pair were neck and neck at the top of the hill.
With the last fence out of action due to Wishfull Thinking's fall, Geraghty held the best position on the outside and he utilised that to the full as the pair had to steer past the last.
With his momentum checked slightly again, Sizing Europe was headed and could not find the extra gear required to peg back the 4-1 winner.
Big Zeb plugged on for a 15-length third.
Johnson was stretched into the racecourse ambulance as a precaution but was conscious and talking to officials.