CSB played by Antman in 6 minutes 40 seconds and 5 sixseconds, or 2405 ticks.

Edited csbgame.dat, dungeon.dat, mini.dat to have auto record.

I used about 10 saves.

Old notes:

Improvements: 4 characters
Dain use front door, then use freeze life before the square before the press westward.
- dont kill orange gem coatl
Skip some ful/ven potions?

Key order:

Dain
Ros
Neta

Corbum order:

Neta
Ros
(Ku)
Dain

Special:
the teleporters in JOTW have long off on timers at the start.
Plan each entrance so you're facing the right way you want to go.

First one for ku face south towards pit
Ku to Dain, face away from teleporter, grab yew staff, advance four squares
After getting ruby key and jumping down pit, turn left/west
Dain to Neta, face away from the pit, grab horn and advance as fast as possilbe

Ok here's the plan:

What level fireball for first door?
 - diamond
Ku solid key wait on first square from altar
Pit jump Mongor
Need onyx key? Or lockpicks from thief, ultra low chance of this and boots of speed, 1 in 32
- actually want lock picks so 1 in 64 chance
- no can use onyx also ok, don't need lockpicks for cross key lock anymore.
Use poison bolt on thief, mon level kill 256 health thief one hi
Get boots of speed from behind door onyx door and ven/ful potions.
Next Dain, two squares from altar, put down item move two squares and wait.
What level fireball for door?
Skip winged key ;)
Jump down pits
Next Neta, round the corner one square, put item, then keep going
To DDD
Neta
Dain
- two paths to return, get cross key and valuables stuff, have to kill demon
- instead use lock picks to open portcullis and jump down from level above
  - kill one less but one more black flame, I think this is faster.
Ku
- don't need to press switch when getting Ros corbum.

Another DDD plan:
- Do Neta, go up stairs to level 00 to open wall
- Then Ku, at the end go up to level 00, and down into Neta again
- Then enter Dain

Another DDD plan: No cannot do Ku first as Ros corbum pits won't be active.
- Do Ku, then jumo down pit at 00(32,17), this lands in Ros fake wall maze, damn this closes Neta skeleton shooter wall :(
 - 3 levels of pits, watch health.
- Reenter DDD (rock pile won't respawn until 6 minutes)
- Do Neta
- Do Dain

Another DDD plan:
- Do Neta, activate Dain pit jump entrance on the way
- Jump into Dain.
- After Dain corbum, jump down pit to starting area and heal
- Get to JOTW go to ku, go to key of b entrance.
- Go to DDD and do Ku
- Don't need lockpicks this way, onyx key also ok.

Neta fireball place
10
then 15

DDD Ku five steps to generate knights
then 6
then 30
then 28 + 24 = 52

Giggler probability for onyx key + boots of speed:
- scenario A: bad thief 6/8 * bad teleporter 7/8 = 42/64 = 21/32
 - good thief 2/7 in good teleporter 1/7 = 2/49
 - 21/32 * 2/49 = 3/16 * 1/7 = 3/112
- scenario B: good thief 2/8 * bad teleporter 7/8 = 14/64 = 7/32
 - good thief 1/7 * good teleporter 1/7 = 1/49
 - 7/32 * 1/49 = 1/32 * 1/7 = 1/224
 
Final 3/122 + 1/224 = 6/224 + 1/244 = 7/224 = 1/32

Giggler probability for just boots of speed:
- any thief wrong teleporter 7 / 8
- any thief right teleport 1 / 7
= 7/8 * 1/7 = 1/8