dilemma
on the horns of a dilemma
lesser of two evils
lesser evil
between the devil and the deep blue sea
tough call
oppugner
false dilemma
keep someone honest
overmatch
polylemma
corrival
better
triangulate
have it both ways
opponent
cross-handed
antioption
third-party
between the hammer and the anvil
elimination
Claytons
countereffort
back and fill
reasoning by elimination
ambitendency
champagne problem
counterargument
hermaphrodite
contrary
quadrilemma
split the difference
takeout
either-or
anticompetitive
alternative
tomato can
probe
counterview
reverse
lucus a non lucendo
Parrondo's paradox
antipolar
mispromote
damned if one does and damned if one doesn't
crazymaking
swim upstream
withstander
field
countercounterargument
preemptive
decoy effect
countertactic
counterexplanation
anticompetitor
between a rock and a hard place
suck and blow
obverse
trilemma
dick move
coinhibit
undermatch
sidegrade
dirty trick
contraselectable
alternativity
schizophrenia
tromboon
wrong-foot
concurrent
semipositive
mismatch
asymmetrical
rivalry
counterweigh
conflict
witherward
countertheorem
Antarctic
battle
in competition
react
default
nonmatch
counterparry
mixed reaction
punt
you can't be half pregnant
in the lap of the gods
opposably
struggle
opposing
hand-off