ProofSpeed.one_less: def of minebender-game@1.0.0.0
Import: import minebender-game@1.0.0.0/proof_speed.bend as ProofSpeed
Lines 435-438 of minebender-game@1.0.0.0/proof_speed.bend: https://jend.leeeet.dev/read.txt?path=minebender-game@1.0.0.0/proof_speed.bend&start_line=435&end_line=438

import Base
import minebender-game@1.0.0.0/proof_base.bend as P

def one_less(+a: Nat, +b: Nat, +f: Nat, e1: {a == f : Nat}, e2: {a == 1n+b : Nat}) -> {b == Nat.sub(f, 1n) : Nat}:
  %e1 : {b == Nat.sub(_, 1n) : Nat}
  %Equal.sym(Nat, a, 1n+b, e2) : {b == Nat.sub(_, 1n) : Nat}
  Equal.sym(Nat, Nat.sub(b, 0n), b, P.sub_zero(b))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=minebender-game@1.0.0.0/proof_base.bend&name=sub_zero