From the next update, the tip on level 10 (Half Duplex) has been changed from "(This is a tough one)" to: "This is a tough one (unless you know the Henrik Maneuver)".
Haha! First time in that level I actually breezed through it with one ship (somehow), then spent the rest of my lives failing to get the second one through. Developed this strategy on my 2nd or 3rd time in that level. Anyway, great game! :)
