fix #237
Update 10_ambush.md
Update 10_ambush.md
Merge pull request #241 from pavel-kolesnikov/patch-1

10_ambush.md: random rules!
Update 12_robotNav.md
Update 17_pointers.md
Update 12_robotNav.md
Update 17_pointers.md
Update 12_robotNav.md
Update 12_robotNav.md
Merge pull request #243 from pavel-kolesnikov/patch-1

Update 17_pointers.md: find nearest TP next to exit, re-route others to it.
Merge pull request #242 from pavel-kolesnikov/patch-2

12_robotNav.md simple connected mazes solver
fix #244
Merge branch 'master' of github.com:AlexNisnevich/untrusted
Update 12_robotNav.md

New solution "The Sinusoidal droid".
Merge pull request #245 from KamiSempai/patch-1

Update 12_robotNav.md
Update 12_robotNav.md
Update 20_bossFight.md

New solution "air strike".
Merge pull request #248 from filippovdaniil/master

Update 20_bossFight.md
Merge pull request #247 from ont/master

Update 12_robotNav.md