And a not-as-intended solution 
Slowly Does It
A solution by Tom (Time: 6.7s, Blocks used: +4)
ColonelFazackerley You can also break the level this way.
Tom I did not think it would get wedged like that. I suppose the ball is actually a polygon that is slightly wider than 2 squares in some orientations.
A solution by AndyB (Time: 6.7s, Blocks used: +3)
A solution by AndyB (Time: 10.0s, Blocks used: +4)
ColonelFazackerley Maybe the slope moved?
Great pair of solutions!
5 months later
andy added the Main Game Hard tag .
2 months later
A solution by NRK (Time: 4.1s, Blocks used: +5)
A solution by Tom (Time: 6.7s, Blocks used: +14)
A solution by niel (Time: 6.7s, Blocks used: +6)
A solution by Stefan (Time: 7.2s, Blocks used: +11)
9 days later
A solution by Žisek (Time: 6.7s, Blocks used: +6)
A solution by Lunchbox (Time: 7.4s, Blocks used: +4)
A solution (Time: 4.2s, Blocks used: +6)
A solution (Time: 4.1s, Blocks used: +4)