Mathmech Deck #750801 — Yu-Gi-Oh! Duel Links

Deck — Deck Power Evaluation

Final Contextual Deck Power: 60/100 (±6 · Confidence: Medium)

• Primary strategy: Combo
• Secondary strategies: Midrange, Tempo
• Format: duel-links

Legality

Main 27 / Extra 9 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Level-4 Cyberse tuner chains (Mathmech Sigma / Nabla / Diameter / Addition) into Extra Deck bosses, chiefly Geomathmech Final Sigma (3000 ATK, doubled battle damage in the Extra Monster Zone) and Primathmech Laplacian, with Geomathmech Magma as a removal-on-battle Synchro.; Mathmech Multiplication doubling a Cyberse monster's ATK and Mathmech Subtraction / Division halving or shrinking the opponent's monsters while the Extra Deck boss attacks.
• Turn 1 (going first): Open with a Level-4 Cyberse tuner or Mathmech Addition / Subtraction (hand-summonable), use Mathmech Nabla or Sigma to pull a Mathmech monster from the Deck or GY, and Synchro or Xyz into a boss the same turn; Mathmech Induction or Centur-Ion Phalanx provides removal of the opponent's blocker.
• Turn 2 (going second): Use Forbidden Droplet (negation plus ATK halving) or Mathmech Diameter's negation to strip the opponent's first board, then rebuild a Cyberse board through Mathmech Equation and Synchro Summon into Final Sigma or Laplacian.
• Recovery: Recover from the GY through Mathmech Superfactorial and Mathmech Equation, with Cynet Mining and Mathmech Billionblade Nayuta to refill the hand and Splash Mage or Decode Talker Heatsoul to re-summon from the GY.
• After siding: Not applicable: Duel Links has no side deck (side_count 0, size rule 0-9 allows none), so there is no post-side plan to score.

Why it scores here

The deck reliably opens an archetype card in the opening hand (P(at least one Mathmech core card in a 5-card hand) ≈ 0.99) and has several Level-4 Cyberse tuners that can restart the engine, so its access to a live Synchro or Xyz board is decent (Inferred). Its ceiling is credible because the Extra Deck carries multiple Mathmech bosses plus Link and Synchro pieces that all satisfy the Cyberse-only summon restriction, but no recorded boards exist, so the conversion score rests on card text rather than observed play. The interaction suite (Forbidden Droplet, Mathmech Diameter, Mathmech Induction, Centur-Ion Phalanx, Superfactorial, Magma) gives layered answers without hand traps. The score is built from the system's consistency, recovery and interaction, not from averaging the card scores, and the Mathmech archetype's popularity and the single guide's claim of Tier 3 placement did not earn points.

Dimension scores

How the score was computed

Strategy profile: 100% Combo (Midrange noted as secondary; no blend applied because the Combo profile fits the Extra Deck-driven engine and no combo evidence exists to justify a split). Structural ≈ 60.6, Going First ≈ 62, Going Second ≈ 57, Meta = provisional, Tournament Reliability ≈ 60. Modifiers: Banlist exposure (-1); Engine compactness (1). Final formula: 0.80*Structural(60.6) + 0.20*TournamentReliability(60) + ContextModifiers(0) = 60.5 → 60 (Meta provisional; no dated metagame sample)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.47 · key two-card combo ≈ — · full-brick estimate ≈ 0.01 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Legal, complete list with no copy-limit or size violations.
• Archetype-core access is near-certain in the opening hand.
• Layered negation and removal with no dead hand traps.
• Extra Deck carries multiple bosses, so one lost board does not end the plan.
• Cyberse exceptions keep the Extra Deck options open across the Mathmech, Link and Synchro pieces.

Weaknesses

• No recorded boards, so the combo floor and median are unmeasured.
• Roughly a dozen Spells and situational cards (Trunade, Droplet, Cynet Mining) risk bricks and dead draws.
• Only 58% exact-name archetype purity, with off-archetype Centur-Ion, Forbidden and link pieces.
• No hand traps or floodgates, so there is limited going-second disruption.

Critical choke points

• Mathmech Sigma and Nabla as the Level-4 tuner starters: a hand without one (about 53% at 5 cards) relies on Addition, Subtraction or Equation.
• Superfactorial, a Limited card, carries the recursion and negation package: losing it cuts the GY recovery line.
• Final Sigma and Laplacian are the only two copies of each boss, so losing both to backrow or removal ends the closing plan.

Recommended changes

Evidence & confidence

• Verified: Legal size and copy limits (27 main, 9 extra, 0 side) within the Duel Links rules.; Limited (Superfactorial, 1 copy) and Semi-Limited (Trunade, 2 copies) statuses are run within legal maximums.; Archetype composition: 21 exact-name Mathmech copies, 15 off-archetype copies.; Card text read from the evidence excerpts for the Mathmech, Centur-Ion, S-Force and Code Talker pieces.
• Observed: Usage statistic: Mathmech Addition and Mathmech Equation are 100% inclusion in the archetype sample.
• Inferred: P(≥1 Level-4 tuner in opening 5) ≈ 0.47 and P(≥1 archetype core in opening 5) ≈ 0.99.; Engine access and brick estimates from composition and text.; Interaction density from negation and removal text (Droplet, Diameter, Superfactorial, Justify, Splash Mage, Induction, Phalanx).; Floor and ceiling estimated from text alone because no combos exist.
• Provisional: Meta Power is null; the single Vietnamese guide's Tier 3 placement and 'hard to deal with' remark are context only.; Matchup fit and side-deck adaptability are neutral placeholders (no side deck exists, no dated meta sample).
• Data gaps: No combos supplied; combo floor, median and ceiling are text-only inference. No tournament link; archetype meta-share and per-pilot record absent. No win-rate telemetry (going-first/second, matchup, brick or starter rates); those signals are Inferred. Usage statistics mark Extra Deck cards as absent (Final Sigma, Laplacian, Magma, Heatsoul, Justify, Splash Mage) despite them being in the export, so core-present percentage (56.2%) is unreliable and was not used. Duel Links has no side deck, so D12 has no post-side data. Meta Power is Provisional unless a dated metagame sample is supplied.