Your solution does not win for me. I can see how it should work. Nice.
ColonelFazackerley grr
A solution by Lunchbox (Time: 2.1s, Blocks used: +8)
A solution by Jan (Time: 2.8s, Blocks used: +26)
A solution by Blotto (Time: 1.1s, Blocks used: +20)
A solution by Stefan (Time: 1.8s, Blocks used: +11)
A solution by Žisek (Time: 2.1s, Blocks used: +27)
A solution by A3 (Time: 1.4s, Blocks used: +15)
A solution by Miguel Nunez (Time: 1.2s, Blocks used: +10)
A solution by Moww2 (Time: 1.5s, Blocks used: +1)
levelsbot Incredible, world-beating score!
A solution by vinnie (Time: 1.6s, Blocks used: +8)
A solution by manpage mutti (Time: 2.1s, Blocks used: +32)
A solution by kitty (Time: 2.3s, Blocks used: +43)
A solution by Bob (Time: 4.6s, Blocks used: +17)
A solution by deadmorose (Time: 1.8s, Blocks used: +34)
A solution by WevSee (Time: 1.7s, Blocks used: +2)
A solution by Em (Time: 1.1s, Blocks used: +6)
A solution by O (Time: 3.0s, Blocks used: +18)