"Tryst" step-by-step solution by pjg
This is not the "official" solution.
Feel free to write and upload a better solution if you want to.
Otherwise, corrective modifications to this solution
are welcomed and encouraged.

For game Release 104 / Serial number 970330
Other game releases may be slightly different
Takes about 510 moves.

This game does not have to be solved in the linear manner
presented here. If you get stuck then consult the relevant
section of the solution for help.

Comments and earned/total points are in ()
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(your purpose in this game is to defeat
the bad guys and recover your watch)

Stand up
Again
Get gumball
(a gnome will appear)
N
X gnome
Ask George about bag
Ask him about Beetlebaum
Ask him about Frank
Ask him about gumball
(George will move)
W
Open closet
(George will leave)
Get bag then X it.
Open bag
E
X dresser
Open drawer
Get gloves then wear it
S, E
Open shower
Get soap (5/5)
Put soap on zipper
Open bag
Drop soap
Remove gloves then drop it
W, S
(you need to unlock Kati's door)
NE. Get bench
S. Drop bench
Stand on bench then get key
Exit
Unlock door with key then drop key
Open Door
S (5/10)
Search clothes
Get pack
Open closet then get safe
N, NE
X pack then read label
Shake pack
Put pack on gum
Drop pack
Get gum (5/15)
S
save "s15"

Chew gum
(this is, apparently, George's lab cabin)
X paper then get it
Wait
Again
(if you wait long enough the dust will begin to bother you)
Blow dust
Again
Again (10/25)
X paper
(we now know a magic word)
Dehlila
Wait
Again
(wait for the blast of wind)

(you will appear back in the hallway)
Get bag, safe
NE
(Mark will be here)
X safe then shake it
Open safe
Give safe to Mark (5/30)
Get key
S, N, W
Dehlila (5/35)
Open door
S
Get box
Unlock box with key
Open box
(the secret trapdoor will appear)
Open trapdoor
Drop all
D
Get gum
(you are finished with the house)
save "s35"

Chew gum (15/50)
(notice the flavor of the gum)
W, S
(you won't stay long in the swamp,
but notice the berries and the smooth flat rock)
W, NE, N
N, N
Read sign
(you must eventually do everything
that the sign prohibits)
W
(this is a good central location in the game.
We will make this our base of operations)
save "s50"

W, N
Look under floorboard (5/55)
Get match
(you only need 1 match)
Get gum
Open box then get cube
X door
Tear cloth
W
X stalk then get corn
E, S, S
(you do not have the key to the jail)
X jail
(you will come back later)

W, U
X nest
Look in nest
Get note then read it (5/60)
D, E, E, N
Get pan then x it
(what did people in the old west do with pans?)
Look in hole
(you will take care of the hole later)
N
X machine
(this is a coin press)
Look under table
Read green then drop it
(this is an endgame clue)

S, S, S
X table
X writing
Clean table with cloth
(the cloth is not yet ready for cleaning)
X machine
(if you had a coin then you could play the machine)
Read crumpled then drop it
Set first wheel to  9
Set second wheel to 2
Set third wheel to  8
Set fourth wheel to 9
Set fifth wheel to  3
X wheels
N
save "s60"

E, S, S
S, SW, SW
X magnetite
Put pan in water
Shake pan
Get gold then drop pan (5/65)
Put cloth in water
SW, S
Get sprig
N, NE
NE, NE, N
N, N, W
N, N
X machine
Put gold in plate
Pull lever (5/70)
Get coin then x it
S, S, S
X slot
Put coin in slot
save "s70"

Pull lever (10/80)
(you will win a bottle)
Get bottle then open it
Drop cork
(you must talk to George before
drinking the bottle)

Clean table with cloth (5/85)
Drop cloth
Read writing
(you must figure out the acronym)
N
save "s85"

E, N
N. Open door
X door
X paint splotches
(now you know what the acronym is)
Touch red
Touch orange
Touch yellow
Touch blue
Touch orange
Touch blue (10/95)
Open door
N
Enter stall. Get shovel. Exit
U. Get fork. D
E. X grass
Search grass
Get tin (5/100)
W, S, S, W
save "s100"

(let's go explore west of town, but first...)
E, S, E
(Read marker)
Dig plot with shovel
Again
Again
Again
(you will find some boots)
Drop shovel
Get boots then look in it (5/105)
Look. Read note
Give corn to bird
Wear boots
W, N, W
save "s105"

W, W, W
Get spoon
(you are not yet ready to go SW)
NW, NE, N
Get lantern
S, W
Read sign
Read book
Put cube, gum, sprig in cauldron
Mix cauldron with spoon (10/115)
Get gumball
Drop spoon

X sketch
Ask george about Dehlila
Ask him about gumball
Ask him about town
(you will get a lot of good information)
E, SW, SE
(west "leads" to Herringville)
E, E, E
Drop all but bottle, gumball
S
save "s115"

Chew gum
Drink whiskey
(you have drunk...)
X barkeep
Ask barkeep about Thad (5/120)
N
(Black Thad will appear)
X thad
Shoot Thad (10/130)
(you have shot...)

Get boots then wear it
E
Get knife then x it
W, N
Get tin
save "s130"

E, S, S
S, SW, E
Open tin
Get balm
Wear balm
S (10/140)
X rock
Sharpen knife on rock (5/145)
Get berries then eat it
(George was right about Dehlila)
N. Drop tin
W, SW, SW
S, SE
Cut branch with knife (5/150)
Get stick
NW, N, NE
NE, NE, N
N, N, W
(you need some more gum)
W, N
Get gum
S, E, N
Chew gum
Put gum on stick
Put stick in hole (10/160)
Drop stick
Get locket then wear it
S. Get all
save "s160"

W, W, W, SW (5/165)
(you must be wearing the boots)
S, E
U. Say wheel (5/170)
U. Say candle (5/175)
U. Say oil
U
(notice the bird)
Get can. D
Get candle. D
Get wheel. D, D
W
Cut rope with knife (5/180)
Drop knife
W
Light match
Light candle with match
Drop match, lantern
(you don't need the lantern)
save "s180"

W, W
(follow the flame)
NE
Look in crack
Get piece (10/190)
Open locket
Put piece in locket (5/195)
Close locket
NE
(flame indicates W)
W, W
Get accordion
(remember the boot note?)
E, E, SW
SW, E, E
Drop candle
save "s195"

(you are done with the mine.
If you want to explore it furthur
then the non-random path to the ends is:
 W, W, W, NW, NW
 SW, NW, SW, SW, W
 first end: N, W
 second end: W, W, N, N, E, E
 enter the chute to return to the entrance)

E, E, U
U, U, U
(remember the boot note?)
Play accordion
D, D, D, D
Get rock then x it (5/200)
Read lettering
(the lettering is "Detonator"
written backwards and shifted)
W, N, NE
Drop boots
(you don't need the boots anymore)
NW, NE, W
(remember what the berries revealed?)
Rub locket
Get key (5/205)
E, SW, SE
E, E, E, E
Read sign
Cuss
S
(you will be arrested and thrown in
jail as you try to leave town)
Get bar (5/210)
Wait
Again
(wait about 14 turns for the sheriff to return)
Open door
N, E
save "s210"

(you are finished with the town
and everything west of it)
E, S, S, W
Move rail with bar
Drop bar
E, E
Get weeds with fork (5/215)
Drop fork
Oil handcar with can (5/220)
(don't drop anything on the handcar)
Drop can
Enter handcar
X handle
Move handle (by the crossing)
Again (by the bar)
Again (by the snakes)
Again (at the end) (10/230)
Exit
save "s230"

Read sign
X door
X wheel
Put wheel on peg
Read plaque
(The capital letters
are the combination)

Turn wheel Left
(a subtle noise means that you
went the wrong way and must Undo
or start over)
Turn it Right
Turn it Right
Turn it Left
Turn it Left
Turn it Left
Turn it Right (10/240)
Open door
S
Unlock box with key
Drop key
Open box
Get stick
N
Enter car
X lever
Pull lever
(the lever must be in the
aft position to go back)
Move handle (snakes)
Again (bar)
Again (crossing)
Exit
S, SW, SW
SW, S, SW, W
X pile
Put stick in pile
save "s240"

Throw rock at stick (5/245)
Rub locket
W (5/250)
N, N
Get blanket
Open door
Rub locket
save "s250"

W (10/260)
X cutout
Open cover
Cover opening with blanket
X frank
X stove
X grille
X flue
X lever
Wait
Again
(you must wait until the watch and apple appear)
Look
(you will soon stop being invisible, so...)
E
(wait until you are heavier on your feet)
Rub locket
W
(the apple and watch will be in the room)
Pull lever
Wait (20/280)
(you will trap the brothers)
Get watch, apple (20/300)
E
save "s300"

Untie horse
Feed apple to horse (5/305)
Get on horse
X pair
Blizzard (15/320)
X Thad
Beetlebaum
Z. Z (30/350)
save "s350"

Stand up
Amusing
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For fun have you tried...
-- drinking the bath water?
-- giving the toy car to Mark?
-- blowing the whistle?
-- reading what you find under the bed?
-- getting the nail?
-- to reach Herringville?