Skip to content

Corner trapping

This article is compiled from the videos of GnomonkeyRS. It records what Gnomonkey said, with sources, not verified game fact. See About.

Corner trapping

Corner trapping
Type Mechanic
Videos 4 (first 2022-07-22, latest 2026-07-13)
Main source Inferno (Twisted Bow) Teaching Stream OSRS

Corner trapping is a mechanic topic that Gnomonkey covers in 4 videos between 2022-07-22 and 2026-07-13. This article is a stub: his statements are grouped by type, repeated ones merged.

Contents

Methods

  • A monster's brain really likes going east or west first towards you, so when a melee is desperately trying to go east through a pillar to hit you, it just sits there; that is a corner trap.1
  • A monster's southwest tile is its 'brain' (this can be shown with NPC indicators): whenever the southwest tile can see you but the rest of the monster is stuck, it is safe-spotted.2
  • A corner trap in the Inferno is when a monster is right up on the corner of a safe spot and has to move east or west towards you before it can move north or south; if it is trying to go east into a pillar it is stuck.3
  • Corner traps work on a line system one tile out from the pillar rather than on exact tiles, so he does not mark them.4
  • For NPCs without smart pathing the brain is their south-west tile, and OSRS paths east or west before north or south and refuses to path north if the only other option is east or west, so a monster whose south-west tile is blocked cannot reach you.5
  • A corner trap is an engine quirk: an NPC always moves west or east before moving south or north, so if you stand against a pillar corner the monster keeps trying to go west or east into the pillar and cannot reach you.6

Stats and numbers

  • Any monster with a ranged attack or projectile (Jads, rangers, blobs, mages) can melee you on the corners, while melee monsters cannot because they only use melee.7

Tips

  • Corner trap spots exist on several sides of a pillar and should be memorized so they can save you in later waves.1
  • If you stand on the bat safe spot when a melee digs, you can corner safe spot, which becomes important later.8
  • There is no single corner trap tile because a whole row of tiles can be used, so do not be afraid to use any of them.9
  • Anytime a melee digs against the side of a pillar you can pull it down to the corner trap by default.10
  • You can also pull a corner-trapped melee around the pillar and it will stay stuck, and sometimes you want to rotate to the other side while corner trapping to speed things up.11
  • To be proactive with melees by always having a plan for where to stand when it digs, since there is no guarantee you kill something in time.12
  • Bats have a short range, so you can safe spot them from one tile behind the pillar.13
  • Against a melee, the lines on the sides of the pillar work as corner trap tiles, three tiles on each side, and you can attack the melee freely from them.14
  • The motion of casting at nibblers from one tile then moving to a certain tile corner traps any mob in a certain position, and is almost always the correct plan; any time he sees something there, he clicks to that tile without thinking.15
  • To corner trap a digging melee you have to be touching its corner, otherwise it can path in.16
  • People only corner trap melees but you can corner trap every single mob, including mages and blobs, and that a monster against a pillar cannot line of sight through it.17
  • Monsters work the same as pillars for corner trapping, so when attacking something you want to stand one tile out from it as if it were a pillar.18
  • Using a monster as a pillar does not work against melees on the north side of the pillar, but you can still corner trap melees on the pillars themselves.19
  • Corner trapping works on all Inferno mobs, so melees can come out a few tiles and you can still attack; Gnomonkey says it solves the majority of waves.20
  • To stand on the lines along the pillar in the right orientation to corner trap, and that monsters can also be used as pillars: stand on the bat tile of a mager to corner trap a melee.21

Gnomonkey's opinion

  • Gnomonkey says you can corner trap anything and many learners let a corner trap slip away and then tank a melee and mage at once.22

Revision history

Date Video Change
2026-07-13 YOU CAN GET YOUR FIRST INFERNO COMPLETED WITH THESE (OSRS) Added: 4 statements (method, opinion, tip)
2024-06-13 Inferno Teaching Stream - Mage Rebalance (OSRS) Added: 7 statements (method, stat, tip)
2024-01-17 IRONMAN Inferno Teaching Stream (OSRS) Added: 5 statements (method, tip)
2022-07-22 Inferno (Twisted Bow) Teaching Stream OSRS Page created: 7 statements (method, tip)
## See also

References

  1. Inferno (Twisted Bow) Teaching Stream OSRS, 2022-07-22. ▶ 7:55 ↩↩

  2. IRONMAN Inferno Teaching Stream (OSRS), 2024-01-17. ▶ 1:52 ↩

  3. IRONMAN Inferno Teaching Stream (OSRS), 2024-01-17. ▶ 2:24 ↩

  4. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 11:20 ↩

  5. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 17:37 ↩

  6. YOU CAN GET YOUR FIRST INFERNO COMPLETED WITH THESE (OSRS), 2026-07-13. ▶ 18:29 ↩

  7. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 51:38 ↩

  8. Inferno (Twisted Bow) Teaching Stream OSRS, 2022-07-22. ▶ 9:50 ↩

  9. Inferno (Twisted Bow) Teaching Stream OSRS, 2022-07-22. ▶ 13:53 ↩

  10. Inferno (Twisted Bow) Teaching Stream OSRS, 2022-07-22. ▶ 22:19 ↩

  11. Inferno (Twisted Bow) Teaching Stream OSRS, 2022-07-22. ▶ 42:21 ↩

  12. Inferno (Twisted Bow) Teaching Stream OSRS, 2022-07-22. ▶ 43:23 ↩

  13. IRONMAN Inferno Teaching Stream (OSRS), 2024-01-17. ▶ 2:50 ↩

  14. IRONMAN Inferno Teaching Stream (OSRS), 2024-01-17. ▶ 10:23 ↩

  15. IRONMAN Inferno Teaching Stream (OSRS), 2024-01-17. ▶ 13:16 ↩

  16. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 19:30 ↩

  17. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 26:38 ↩

  18. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 37:10 ↩

  19. Inferno Teaching Stream - Mage Rebalance (OSRS), 2024-06-13. ▶ 50:00 ↩

  20. YOU CAN GET YOUR FIRST INFERNO COMPLETED WITH THESE (OSRS), 2026-07-13. ▶ 19:11 ↩

  21. YOU CAN GET YOUR FIRST INFERNO COMPLETED WITH THESE (OSRS), 2026-07-13. ▶ 19:44 ↩

  22. YOU CAN GET YOUR FIRST INFERNO COMPLETED WITH THESE (OSRS), 2026-07-13. ▶ 54:37 ↩

Mechanics

Colosseum invocations • Yama contracts • Invocations (Tombs of Amascut) • Jal-ImKot • Inferno pillars • Jal-Ak • Alt account • Thralls • Nex gear setup • Tempoross • Turael • Inferno waves • Jal-Nib • Doom of Mokhaiotl: rock block method • Monkey Room • Fortis Colosseum pillars • Phantom barrage • Awakened bosses • Melee gear progression • Demonic Brutus • Jal-MejRah • Prayer flicking • Butterfly Tech • Fortis Colosseum setup • Doom of Mokhaiotl: melee punish • Sulliuscep • Botting • Off-ticking • Corner trapping • Doom of Mokhaiotl: car attack • Combat Achievements • Doom of Mokhaiotl: shield phase • Pest Control • Blood Barrage • Nylocas • Great Olm 4-1 method • Nex reset • Triple Jad • RuneScape 3 combat • Tightrope skip

Category: Mechanics