Push-fold strategy
Short-stack tournament play, from the original Sklansky-Chubukov framework to modern Nash ranges.
Push-fold is the discipline that turns 15bb stacks from "death row" into "easily exploitable spots". When you're short, post-flop play stops mattering, what matters is whether you shove the right hands.
The framework
Sklansky and Chubukov (2005) gave us the first solved push-fold framework: each starting hand has a maximum profitable shove depth versus a random calling range. Above that stack depth, fold. At or below, push, and against perfect defence you cannot lose money.
Modern Nash equilibrium charts refine this with actual ranges on both sides, the SB shover and BB caller both play GTO. The results are similar but the ranges widen slightly because real opponents can't defend perfectly.
Train the most common spot (SB vs BB, 15bb) live with the push-fold trainer. Look up specific hand depths in the SC rankings table.