E1M1: Checkmate (PhobosDeimos Anomaly)

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PhobosDeimos Anomaly maps
Episode 1
Episode 2

M1 M2 M3 M4 M5 M6

This level occupies the map slot E1M1. For other maps which occupy this slot, see Category:E1M1.

E1M1: Checkmate is the first map of the first episode of PhobosDeimos Anomaly. It was designed by Callum Guy Oliver (phobosdeimos1) and uses the music track "".

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Map of Checkmate
Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.


Other points of interest[edit]


  1. Just before the lift leading to the red key, open the wall with the skull to get a plasma gun, an ammo clip, and energy cell packs. The switch here reveals a box of rockets. (sector 23)
  2. Teleport from the red key area, then open the north wall to find a chainsaw, a rocket launcher, and rockets. (sector 55)
  3. At the northeast room, go to the southeast corner to lower the central lift. Go south from that lift and into the east alcove to get a soul sphere. (sector 122)


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

The records for the map at the Doom Speed Demo Archive are:

Run Time Player Date File Notes
UV speed
NM speed
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on February 21, 2022.


Player spawns[edit]

This level contains eight spawn points:

  1. facing west. (thing 4)
  2. facing south. (thing 44)
  3. facing north-west. (thing 45)
  4. facing south-east. (thing 78)
  5. facing west. (thing 146)
  6. facing south-east. (thing 219)
  7. facing south-west. (thing 249)
  8. facing south-east. (thing 276)


Map data[edit]

Things 277
Vertices 789*
Linedefs 917
Sidedefs 1256
Sectors 185
* The vertex count without the effect of node building is 724.


This level contains the following numbers of things per skill level:

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]