Mathmech Deck #789770 — Yu-Gi-Oh! OCG
40 Main, 15 Extra, incl. Firewall Defenser x3, Mulcharmy Fuwalos x3, Ash Blossom & Joyous Spring x3.
Created by: YGO Mod (20517634)
Created On: 11/09/2026
Main Deck (40)
- Code Generator x1
- Code of Soul x1
- Dotscaper x1
- Droll & Lock Bird x1
- Firewall Defenser x3
- Firewall Guardian x1
- Firewall Phantom x1
- Gatchiri @Ignister x1
- Knightmare Corruptor Iblee x1
- Mathmech Addition x1
- Mathmech Circular x1
- Micro Coder x1
- Mulcharmy Fuwalos x3
- Parallel eXceed x2
- Wizard @Ignister x1
- Cyberse Code Magician x1
- Ash Blossom & Joyous Spring x3
- Backup @Ignister x2
- Ghost Ogre & Snow Rabbit x3
- Mathmech Diameter x1
- Mathmech Sigma x1
- Cynet Codec x1
- Cynet Mining x3
- Salamangreat Sanctuary x1
- Small World x3
- Cynet Conflict x1
Extra Deck (15)
- Accesscode Talker x1
- Allied Code Talker @Ignister x1
- Code Talker Inverted x1
- Cyberse Contract Witch x1
- Cyberse Wicckid x1
- Decode Talker Heatsoul x1
- Decode Talker Integration x1
- Excode Talker x1
- Firewall Dragon x1
- Salamangreat Almiraj x1
- Salamangreat Balelynx x1
- Transcode Talker x1
- Code Igniter x1
- Primathmech Alembertian x1
- Primathmech Laplacian x1
Side Deck (15)
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Deck — Deck Power Evaluation
Final Contextual Deck Power: 32/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 45 |
| Going First | 47 |
| Going Second | 44 |
| Meta Power | provisional |
| Tournament Reliability | 42 |
- Primary strategy: Midrange
- Secondary strategies: Toolbox
- Format: ocg
Legality
Main 40 / Extra 15 / Side 15 — status under the rules at evaluation time: Illegal. 1 violation(s).
Identity & game plan
- Win condition: Link and Xyz boards built from Code Talker and Mathmech Extra Deck monsters, backed by hand-trap protection; Firewall and Cyber link summons that add pressure through Firewall Phantom and Cyberse Code Magician
- Turn 1 (going first): Search with Cynet Mining or Small World to reach a Mathmech or Code Talker starter, then link or Xyz summon into a board
- Turn 2 (going second): Hold Ash Blossom, Ghost Ogre and Droll & Lock Bird to stop the opponent's first engine, then rebuild through Mathmech Sigma and Mathmech Addition
- Recovery: Recover through Cynet Codec and the Code Talker link recursion effects, and through Mathmech Circular's searches
- After siding: Side Typhoon, Iron Thunder and Evenly Matched against control or floodgate-heavy opponents; the side cards are generic and not tied to the main-deck engine
Why it scores here
The deck is scored as a system: it has eight to thirteen searchers, several hand traps and negation effects, and link and Xyz routes that can keep pressure going. Its opening reliability rests on Cynet Mining and Small World, which reach the starter Mathmech and Code Talker monsters, but the three-copy Ash Blossom and the scattered 1-copy starters make the hand less consistent than the card count suggests. No recorded boards exist for this list, so the combo ceiling and median are text-only inferences and score low. The list is illegal because Ash Blossom & Joyous Spring is run three times against a limit of two, so the score is capped and labeled structural-only. Popularity of the archetype did not earn points, and card scores were not averaged.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 52 | P(at least one searcher in a 5-card opening hand) is about 0.88 and the archetype core has about 0.82 chance of a card in hand; starters are mostly single copies (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 50 | Seven hand traps and thirteen searchers create real hand-redundancy, but several 1-copy engines and multiple Normal Summon conflicts leave brick risk (Inferred) |
| D3 | Combo Conversion & Ceiling | 35 | No recorded boards exist, so the best line is text-only inference from link and Xyz routes (Inferred) |
| D4 | Combo Floor & Median Output | 30 | No recorded boards exist, so the median output cannot be measured (Inferred) |
| D5 | Interruption Resilience & Route Redundancy | 48 | Several independent hand traps and negations give interruption resilience, but single-choke Mathmech starters limit recovery (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 45 | Searchers and Cynet Codec give recovery, but resource spend is high and there is no recorded resource data (Inferred) |
| D7 | End-Board & Interaction Quality | 60 | Eight negation-text cards, Ash Blossom, Ghost Ogre and Droll & Lock Bird give layered interaction (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 45 | Hand traps on a going-second turn are strong, but no boards show whether they stop a real board (Inferred) |
| D9 | Offensive Pressure & Closing Power | 40 | Link monsters with 2300 ATK and Xyz pressure exist, but there is no recorded closing data (Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 40 | The 40-card main is at the minimum size, but copy-limit violation and a split archetype core (10.9 percent exact-name purity) reduce efficiency (Verified) |
| D11 | Extra Deck Efficiency & Coverage | 50 | Extra Deck is full with 12 Link and 3 Xyz monsters that share a Cyberse engine, but several are off-core (Verified) |
| D12 | Side Deck Adaptability | 55 | Side has relevant generic answers (Typhoon, Iron Thunder, Evenly Matched) and Nibiru, though none are engine-specific (Verified) |
| D13 | Matchup Coverage & Format Fit | 40 | No tournament or dated meta sample is supplied, so matchup and format fit are provisional (Provisional) |
| D14 | Pilotability & Error Tolerance | 35 | The line depends on many link and summon steps with several decision points, so repeatability for a typical pilot is low (Inferred) |
How the score was computed
Strategy profile: Midrange primary, Toolbox secondary, disclosed as an approximation. Structural ≈ 45, Going First ≈ 47, Going Second ≈ 44, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: copy-limit violation (Ash Blossom & Joyous Spring) (-12). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional), then the illegal-deck cap applied: 0.80*45 + 0.20*42 = 44.4, minus 12 for legality exposure, giving 32
Probability & combo summary
- Opening a starter: P(≥1) ≈ 0.88 · key two-card combo ≈ — · full-brick estimate ≈ — (all Inferred)
- Combo output: best PowerIndex —, median —, board-per-starter —
- Turn order: 0 going-first lines vs 0 going-second lines
Strengths
- Two searchers (Cynet Mining and Small World) give high starter access
- Seven hand traps and eight negation effects give layered interaction on the opponent's turn
- Link and Xyz routes give recovery and board presence
Weaknesses
- Ash Blossom & Joyous Spring is run three times, over its copy limit, so the deck is illegal as built
- The archetype core is split across sub-archetypes (10.9 percent exact-name purity), which weakens engine coherence
- Many starters are single copies, so one missing card can stop the line
Critical choke points
- Mathmech Sigma and Mathmech Addition are single copies that anchor the going-second plan
- Link summons need several specific monsters in the Extra Deck, so one missing Link material stalls the board
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | One copy of Ash Blossom & Joyous Spring | A legal-count replacement from the Side Deck (for example Ghost Belle & Haunted Mansion) | Fixes the copy-limit violation, which is the reason the deck cannot receive a normal score |
| 2 | Off-core Code Talker and Ignister monsters that do not connect to the Mathmech or Cyber engine | More 3-copy Mathmech or Cyber core cards, or a Side Deck answer | Raises archetype purity and the starter hit rate |
Evidence & confidence
- Verified: Main Deck is 40 cards, Extra Deck is 15 and Side Deck is 15, all within the OCG size rules; Ash Blossom & Joyous Spring is run three times against a Semi-Limited limit of two, which is an illegal copy count; Archetype exact-name purity is 10.9 percent
- Inferred: Starter access is about 0.88 for at least one searcher in the opening hand; Hand-trap coverage is about 0.71 for at least one hand trap when going second; Combo ceiling and median are text-only estimates because no boards were recorded
- Provisional: Meta and matchup fit cannot be scored without a dated metagame sample
- Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN (going-first/second, matchup, game-level, brick/starter/OTK rates) — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied
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