In game TehEpicBoss
He positioned them: very close in a circle around him...the nearest marksman cant shot him because they have no space to rise there weapons...same goes for all the others behind them...the last row of marksman could step one step back but would have a lot of soldiers in front to save the ninja! Igg:105296635 principiis
The hero said the marksmen must "face" the ninja, and the ninja told the marksmen to stand with their head turned at him, therefore their bodies arent turned toward the ninja but they are technically still "facing" the ninja, therefore the marksmen couldnt shoot at the ninja.
Btw does this puzzle have a set answer, or are the winners picked based on the cleverness?
All 50 men in a semi circle 20 ft away two by two pointing weapons at each other with faces turned to captive. Then command to fire is given and each member of the teams of two shoots the other leaving the captive alive.