K9 Deck #773425 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

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

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

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: Xyz and Link pressure from K9 and Vanquish Soul boards (K9-X Werewolf 3300 ATK, Vanquish Soul Caesar Valius 3000 ATK, K9-66X Jacks removal-on-summon), converted through hand-trap-protected summons; Vanquish Soul Rocks and Rock of the Vanquisher recursion lines, with Divine Arsenal and the Number chain as late-game extenders
• Turn 1 (going first): Open with a Level 5 K9 monster Normal Summoned without tribute, search a K9 or Vanquish Soul card, and build toward a K9 Xyz using K9-17 Ripper and K9-66X Jacks; hold Ash Blossom and Ghost Ogre when the hand supports it
• Turn 2 (going second): Use the six-card hand to present Ash Blossom, Ghost Ogre, Maxx C, Droll and Ghost Mourner against the opponent's first summon or search, then rebuild through Vanquish Soul Hollie Sue or Dr. Mad Love with the Level 4 and Level 5 bodies
• Recovery: Searchers (A Case for K9, Vanquish Soul Start, Dr. Mad Love, Razen) and Mulcharmy draw effects refill the hand; K9-X Forced Release resurrects an Xyz to reuse materials
• After siding: Not applicable: Master Duel has no sideboard in this format, so side adaptability is neutral and not credited

Why it scores here

The deck reliably opens a functional K9 or Vanquish Soul starter: the core archetype group has an estimated 99.5% chance of at least one piece in a five-card opening hand, and searchers are present in 13 slots (about 88% chance of at least one in hand). Its interaction package (seven hand-trap or negation monsters, Crossout Designator, Maxx C and Droll and Lock Bird) gives it a credible going-second plan, which is why Interaction and Going-Second score above the Structural average. Conversion and floor are scored conservatively because no recorded boards exist, so combo ceiling and median are text-only inferences. Popularity and archetype usage stats confirm the list is real and accessible but added no points, and the score was built from the system rather than from averaging the card scores. Brick risk from hand traps that need the opponent to act and the split between two archetype engines holds the score down.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 61, Going First ≈ 58, Going Second ≈ 66, Meta = provisional, Tournament Reliability ≈ 58. Modifiers: engine split across two archetypes (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional) + ContextModifiers = 0.80*61 + 0.20*58 - 2 = 58

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

• Core archetype cards are almost always in the opening hand (0.995)
• Seven hand-trap or negation monsters give going-second and disruption coverage
• Two engines (K9 and Vanquish Soul) provide independent lines after a single disruption
• Extra Deck covers Level 4 and Level 5 Xyz options and several strong boss monsters

Weaknesses

• Hand traps are dead without opposing activity, causing brick risk in some hands
• No recorded boards, so combo ceiling and median are unmeasured
• Partial engine split between K9 and Vanquish Soul; only one Number 104 chain card
• Master Duel has no sideboard, so post-side adaptability cannot be credited

Critical choke points

• The Number 104 chain depends on a single N.As.H Knight
• Opponent's first monster activation or search is the trigger for most hand traps

Recommended changes

Evidence & confidence

• Verified: Legal status: 40 main, 15 extra, 0 side within Master Duel size rules; all restricted cards within legal copies; Archetype core group copies and probabilities as provided; Role tags: 7 hand traps, 13 searcher texts, 9 removal texts, 5 negation texts
• Inferred: Consistency and brick estimates derived from hypergeometric draws and card text; Going-second hand-trap coverage and engine split penalty
• Provisional: Meta power (null), matchup fit (D13 neutral 50) and tournament reliability inputs without a dated meta or match record
• Data gaps: No combos supplied: combo floor, median and ceiling are text-only inference No tournament link: archetype meta share and pilot match record absent usage statistics marks Werewolf, Ripper, Jacks and Number 104 as not in this deck (in this deck=false, copies_in_deck=0), but the cards array lists them in the Extra Deck with copies 1 or 2; the core-present % (56) may be understated, so core presence was taken from cards[] instead No win-rate telemetry; going-first and going-second splits are Inferred Meta Power is provisional; no dated metagame sample supplied Deck title is null in the export