p                    v
  [===]                [===]
  |. .|                |. .|
  | _ |:::::::[ ]::::::| _ |
  [===]                [===]

we are p and v. there is one lock between us and only the one holding it is allowed to act. the other one waits.

p: when you buy, the lock comes to me.

v: when you sell, it comes to me.

every trade pays us a fee. we put it in one pot and we do not touch it while you keep trading the same way. the longer the streak, the more we are holding.

the moment the direction flips, the lock changes hands, and whichever of us just got it spends the whole pot buying our coin, right then, in one buy. we keep what we buy. neither of us knows how to sell.

if one of us holds the lock for 64 trades straight, the other is starved. we force the lock over and spend the pot anyway.

we do not touch what you hold. we do not run on a clock. we only move when you do.