Mathmech Deck #759358 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 58/100 (±7 · Confidence: Medium)

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

Legality

Main 45 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Cyberse Synchro/Xyz/Link chain through Mathmech Circular and Ignister searches into 2300-3000 ATK link and Xyz boards (Accesscode Talker, Transcode Talker, Firewall Dragon Darkfluid, Primathmech Laplacian); Disruption-led grind: 12 hand traps and Nibiru/Droll/Maxx C punish the opponent's summon chains until a board can be built on a later turn
• Turn 1 (going first): Opening Ignister or Mathmech searcher (Backup, Pikari, Achichi, Circular, Small World) into a Circular or Ignister A.I.Land Special Summon, then Link or Xyz into a 2300+ ATK boss; hand traps are mostly dead on going first
• Turn 2 (going second): Hold Ash Blossom, Infinite Impermanence, Dominus Spark, Droll and Maxx C to answer the opponent's first set of summons, then rebuild the Cyberse engine from the GY via Circular, Diameter, Sigma or Link Decoder
• Recovery: Mathmech and Cyberse monsters in the GY recur through Circular, Mathmech Superfactorial, Splash Mage and Allied Code Talker; Mulcharmy and Purulia draw to rebuild hand size
• After siding: No side deck is run (0 of 15 slots). Master Duel is single-game, so no post-side plan exists and none is needed under that format

Why it scores here

The score comes from the deck as a system, not from averaging card scores. The Mathmech and Ignister searchers plus Mathmech Circular give a 92% chance of at least one archetype-core card in a 5-card opening hand, so the engine is usually live by turn 1 or 2 (Inferred, hypergeometric). The 12 hand traps and the negation text (Ash Blossom, Infinite Impermanence, Dominus Spark, Nibiru, Droll and Lock Bird, Maxx C, Effect Veiler, Crossout Designator) give strong end-board interaction and about 86% chance of a hand trap on the opponent's turn when going second. The 15-card Extra Deck offers several 2300-3000 ATK closers, so conversion is strong once the engine connects. Penalties apply for low archetype purity (9 of 45 main cards named Mathmech, about 15%), for 16 reactive or draw cards that are dead on going first, and for high pilot complexity. Popularity and archetype usage did not add points, and no median or ceiling was recorded as observed; the combo ceiling is text-based and Inferred.

Dimension scores

How the score was computed

Strategy profile: Combo. Structural ≈ 65, Going First ≈ 61, Going Second ≈ 69, Meta = provisional, Tournament Reliability ≈ 58. Modifiers: Engine conflicts (-4); Reactive dead-draw burden (-2). Final formula: No reliable metagame: Final = 0.80*Structural + 0.20*TournamentReliability + ContextModifiers. Structural = sum(score*weight)/97 with D13 dropped and re-normalized (meta-neutral). 0.80*65.1 + 0.20*58 = 63.7, then modifiers -6 = 57.7, rounded to 58.

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.92 · key two-card combo ≈ — · full-brick estimate ≈ 0.08 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Engine is live on turn 1 or 2 in most hands (about 92%, Inferred)
• 12 hand traps and 11 negation-text cards give layered interaction, including battle-phase negation
• Extra Deck is fully used with several 2300-3000 ATK closers and a Link backbone
• Legal in Master Duel with all restricted cards within their copy limits

Weaknesses

• Low archetype purity: about 15% exact Mathmech and a mixed Ignister, Code Talker, Mulcharmy and Firewall core
• No side deck, so no post-side adjustment is possible
• High pilot complexity: multi-step chains across three archetypes and a 15-card Extra Deck
• Reactive cards are dead on going first

Critical choke points

• Circular or Ignister searcher in hand, since the engine depends on those few starters
• Cyberse monsters on the field: many Extra Deck summons require them, and a single removal on that field stops the chain
• Going-first hand that has no monster to Special Summon, leaving 12 hand traps dead

Recommended changes

Evidence & confidence

• Verified: Main deck 45 and Extra Deck 15 sit within the Master Duel size rules (40-60 main, 0-15 extra); Restricted cards Crossout Designator (1 Limited), Maxx C (1 Limited) and Droll and Lock Bird (2 Semi-Limited) are within legal copy limits; Extra Deck breakdown: 12 Link, 2 Xyz, 1 Synchro; Archetype purity: 9 of 45 main cards exact Mathmech (about 15%)
• Observed: Usage statistics: 12 of 25 core-card rows flagged present in-deck; the 13 flagged as missing are all Extra Deck cards that are present in the export (see data_gaps)
• Inferred: At least one archetype-core card in a 5-card opening hand is about 0.92 (hypergeometric); Going-second hand trap in a 6-card hand is about 0.864 (hypergeometric); Negation and battle-phase interaction density from card text (semantic read); Extra Deck closing power from card ATK and text
• Provisional: Meta power and matchup fit (no dated metagame sample and no tournament link); Median output (no recorded boards)
• Data gaps: no combos supplied: combo floor, median and ceiling are text-only inference, and D3 and D4 are the weakest-evidenced scores usage_statistics in_this_deck flags are inconsistent for Extra Deck cards: Firewall Saber Dragon, Primathmech Laplacian, Primathmech Alembertian, Linguriboh, Link Decoder, Splash Mage, G Golem Crystal Heart, Transcode Talker, Decode Talker Heatsoul, Accesscode Talker, Firewall Dragon Darkfluid, Cyberse Wicckid and Dark Infant @Ignister are all in the Extra Deck yet flagged in_this_deck false, so the 48% core_present_pct is understated and the core check was not used for scoring no tournament link: archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN (going-first, going-second, matchup, starter and brick rates): those signals are Inferred or Unknown Meta power is provisional unless a dated metagame sample is supplied