Codebreaker Deck #631201 — Yu-Gi-Oh! OCG
55 Main, 15 Extra, incl. Mathmech Diameter x3, Mathmech Nabla x3, Mathmech Sigma x3.
Created by: YGO Mod (20517634)
Created On: 01/14/2026
Main Deck (55)
- Balancer Lord x1
- Droll & Lock Bird x2
- Mathmech Addition x1
- Mathmech Circular x1
- Mathmech Division x1
- Mathmech Multiplication x2
- Mathmech Subtraction x2
- Maxx "C" x1
- Skull Meister x2
- Wizard @Ignister x1
- Ash Blossom & Joyous Spring x2
- Effect Veiler x2
- Ghost Belle & Haunted Mansion x1
- Ghost Ogre & Snow Rabbit x2
- Mathmech Diameter x3
- Mathmech Nabla x3
- Mathmech Sigma x3
- Book of Eclipse x2
- Called by the Grave x1
- Change of Heart x2
- Cynet Mining x3
- Cynet Rollback x1
- Foolish Burial x1
- Harpie's Feather Duster x1
- Heavy Storm x1
- Mathmech Billionblade Nayuta x1
- Mathmech Equation x1
- Raigeki x3
- Triple Tactics Talent x2
- Infinite Impermanence x2
- Mathmech Superfactorial x3
- Red Reboot x1
Extra Deck (15)
Couldn't load the deck
Deck — Deck Power Evaluation
Final Contextual Deck Power: 30/100 (±8 · Confidence: Low)
| Overall score | Value |
|---|---|
| Structural Deck Power | 47 |
| Going First | 42 |
| Going Second | 48 |
| Meta Power | provisional |
| Tournament Reliability | 42 |
- Primary strategy: Midrange
- Secondary strategies: Stun, Toolbox, Synchro, Xyz
- Format: ocg
Legality
Main 55 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 3 violation(s).
Identity & game plan
- Win condition: Synchro/Xyz boards from Mathmech and Geomathmech Extra Deck monsters, closed by Geomathmech Final Sigma and Primathmech Laplacian; Hand-trap-supported Ignister and Mathmech Xyz pressure through interruptions
- Turn 1 (going first): Open a Mathmech Tuner, use Cynet Mining or Mathmech Circular to find the next starter, and build a Synchro or Xyz board while holding Ash Blossom or Ghost Belle for interaction
- Turn 2 (going second): Use the six-card hand's hand traps (Ash Blossom, Infinite Impermanence, Skull Meister, Effect Veiler, Ghost Ogre) to answer the opponent's first engine, then rebuild through Mathmech Superfactorial
- Recovery: Recur Mathmech monsters from the GY through Mathmech Equation, Superfactorial and Cynet Rollback
- After siding: No side deck is registered, so there is no post-side plan to evaluate
Why it scores here
The deck is scored as a system, not as an average of its cards. Its engine reliability is moderate: a 3-copy Mathmech core is supported by 6 searcher-text cards, giving about a 45% chance of at least one searcher in a 5-card opening hand (Inferred). Interaction is its strongest area, with 15 hand traps and 17 negation-text cards giving about an 87% chance of at least one hand trap in a 6-card going-second hand (Inferred). Its weaknesses are a 70-card off-archetype spread (Cynet, Harpie, Book of Eclipse, Triple Tactics), 16 Tuners that compete for slots, and no recorded boards, so the combo ceiling and median are text-only estimates. Three cards break copy limits and Called by the Grave and Triple Tactics Talent are Forbidden in this format, so the deck is illegal. The score is therefore a structural, theoretical-only read capped low. Popularity and archetype usage were not used to raise the score, and no average of individual card scores was used.
Dimension scores
| # | Dimension | Score | Evidence |
|---|---|---|---|
| D1 | Engine Accessibility & Consistency | 60 | P(>=1 searcher in 5 cards) ≈ 0.45 and P(>=1 3-copy starter) ≈ 0.25 for Mathmech core; Tuner-heavy but starter-thin (Inferred) |
| D2 | Opening-Hand Quality & Brick Management | 45 | 16 Tuners and 15 hand traps compete for hand slots; 6 cards run 3 copies, few resolve Normal Summon conflicts (Inferred) |
| D3 | Combo Conversion & Ceiling | 40 | No recorded boards; ceiling is a text-only read of Geomathmech and Primathmech Extra Deck lines (Provisional) |
| D4 | Combo Floor & Median Output | 40 | No recorded boards; median output cannot be measured and is held low until combos are supplied (Provisional) |
| D5 | Interruption Resilience & Route Redundancy | 50 | Hand traps and Mathmech GY recursion offer two independent interruption answers, but the Tuner-heavy hand has a single engine route (Inferred) |
| D6 | Resource Economy, Recovery & Grind | 45 | Mathmech Equation, Superfactorial and Cynet Rollback provide some recursion; no resource telemetry exists (Inferred) |
| D7 | End-Board & Interaction Quality | 65 | 17 negation-text cards and 14 removal-text cards, including Heavy Storm and Harpie's Feather Duster, give layered interaction (Inferred) |
| D8 | Going-Second & Board-Breaking Power | 55 | Heavy Storm and Raigeki provide board breaking, but the spread is split between hand traps and engine pieces (Inferred) |
| D9 | Offensive Pressure & Closing Power | 50 | Geomathmech Final Sigma and Primathmech Laplacian provide 2800 to 3000 ATK closers with no proven route to lethal (Inferred) |
| D10 | Main Deck Efficiency & Flexibility | 35 | 55 Main Deck cards with 32 distinct names, 70 off-archetype copies and 3 illegal copies; compactness is weak (verified structure, Inferred consequence) |
| D11 | Extra Deck Efficiency & Coverage | 55 | 9 Synchro and 6 Xyz Extra Deck cards with Geomathmech and Primathmech anchors; the Extra Deck is coherent (verified composition) |
| D12 | Side Deck Adaptability | 30 | No side deck registered; no post-side plan can be evaluated (verified) |
| D13 | Matchup Coverage & Format Fit | 20 | No tournament link or dated metagame sample; archetype fit is unknown (Provisional) |
| D14 | Pilotability & Error Tolerance | 40 | Multi-step Synchro and Xyz sequencing with many conditional hand traps; high decision load (Inferred) |
How the score was computed
Strategy profile: Midrange. Structural ≈ 47, Going First ≈ 42, Going Second ≈ 48, Meta = provisional, Tournament Reliability ≈ 42. Modifiers: banlist exposure (-8); illegal_deck_cap (-8). Final formula: Illegal deck: theoretical/structural only. 0.80*Structural(47) + 0.20*TournamentReliability(42) = 46, then modifiers -16 = 30. Meta provisional.
Probability & combo summary
- Opening a starter: P(≥1) ≈ — · 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
- Dense hand-trap and negation package (15 hand traps, 17 negation-text cards)
- Coherent Synchro and Xyz Extra Deck anchored on Mathmech and Geomathmech
- Recursion from the GY through Mathmech Equation and Superfactorial
Weaknesses
- Illegal list: two Forbidden cards and one copy-limit overrun
- 70 off-archetype copies dilute the engine
- No side deck, so no post-side adaptability
- No recorded boards, so the combo ceiling and median are unmeasured
Critical choke points
- Mathmech Circular and Cynet Mining are the only searchers for the Extra Deck anchors
- Tuner density means a hand without a non-Tuner partner cannot make a Synchro
Recommended changes
| Priority | Remove | Add | Reason |
|---|---|---|---|
| 1 | Triple Tactics Talent (2) and Called by the Grave (1) | Legal replacements within the copy limits | Restores legality so a normal Final Contextual score can be issued |
| 2 | Droll & Lock Bird (second copy) | A 1-copy-legal hand trap or a second Ghost Belle | Brings the Limited card within its copy limit |
| 3 | Off-archetype spells not tied to the Mathmech engine | Mathmech or Geomathmech starters and searchers | Raises engine consistency and reduces brick risk |
Evidence & confidence
- Verified: Main 55, Extra 15, Side 0 within OCG size rules; Triple Tactics Talent and Called by the Grave are Forbidden; Droll & Lock Bird is Limited with 2 copies run; Archetype composition: 32 generic, 31 Mathmech, 70 off-archetype copies
- Inferred: Searcher and hand-trap hypergeometric odds; Interaction density from card text; Synchro and Xyz route reliability from text
- Provisional: Combo ceiling and median (no recorded boards); Matchup fit and meta position (no dated metagame sample)
- Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and pilot record absent No win-rate telemetry exists in YGOVN Meta Power is provisional without a dated metagame sample Deck title is null in the export
Couldn't load the combos
