Guess-then-reveal · every street, one hand at a time
Each hand randomly draws that many opponents from real seats at the table (never your own). Every opponent's range for the whole hand is their own seat's standard opening range — see below for why that stays fixed.
Uniform deals a real 2-card holding with its true frequency — most hands you're dealt are easy reads (AA, 72o). "Near the borderline" biases the deal toward hand strengths that tend to produce closer, more instructive equity numbers.
Every opponent keeps the same range for all four streets — this trainer doesn't model betting, folding, or ranges narrowing as a hand goes on. That's deliberate: the goal is purely to train reading equity from a hand and a range, not the action around it (Fold Line and Hand Analyser already cover full decisions). The flop you see is deliberately drawn from a rotating mix of board textures — dry, wet, paired, monotone, two-tone — so a session exposes you to the full spread rather than whatever's statistically common. The turn and river are then dealt as plain random cards. A guess within 5 percentage points of the true equity counts as close.