Margin — two-way (Power)
Two-way Power-method margin tools, paired on one page. Strip recovers fair Malay from a priced quote; Apply injects ladder MARGIN into a fair pair and snaps to the published 0.01 Malay grid. The two are inverses up to the 0.01-step snap. This is the same two-way strip the Odds Generation engine runs on the Handicap and Total quotes before it back-solves the goal rates; the multi-way analog uses the Shin model — see Margin — multi-way (Shin).
↑/↓ on a Malay side walks the 0.01 ladder and moves the partner the opposite way (Strip tab); Shift takes 10 steps.
Recover the fair Malay magnitude from a two-way priced market (HANDICAP / TOTAL / ODD_EVEN) via the Power method. The solver finds exponent x such that q₁^(1/x) + q₂^(1/x) = 1; fair probabilities pᵢ = qᵢ^(1/x) collapse to a single ±m fair pair because every fair two-way market has |m₁| = |m₂| = min(p₁,p₂)/max(p₁,p₂) in Malay. The signed assignment (which side is favorite) is reported alongside the magnitude. Production runs this as an O(1) precomputed lookup table; this demo solves it live via Newton iteration so the math is visible.
→ exponent x ≈ 0.9709 → fair (0.5000, 0.5000) → fair Malay ±1.0000
SIDE 1 = +1.0000, SIDE 2 = −1.0000 (even-money tiebreak goes to SIDE 1).
Press ↑/↓ on either side to slide the line — ladder MARGIN stays at 0.08.