proposition: Lemma eval3_correct t b : eval3 t b = eval t b.
proof: Proof. have [_ _ H] := eval_rec3_correct (depth b) t b (isT : loss < win). by apply: H => //; rewrite ge_loss le_win. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(all_algebra)