K9 Deck #762791 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 52/100 (±6 · 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: K9 Xyz and Link bosses (K9-X Werewolf, K9-66X Jacks, Underworld Goddess, Caesar, Desirae) after a hand-trap or Xyz-based board is established; Fiendsmith Fusion and Link pressure via Fiendsmith's Lacrima and Requiem recursion
• Turn 1 (going first): Normal Summon a K9 level-5 monster (Noroi, Izuna, Jokul, Lantern) on the strength of the 2-card-in-hand condition, search with A Case for K9, then hold Ash Blossom or Maxx C for the opponent's first activation
• Turn 2 (going second): Keep a hand-trap-plus-starter six (Ash, Ghost Belle, Ghost Ogre, Droll, Maxx C) to answer the opponent's first board, then rebuild through K9 Xyz and Lupis
• Recovery: Recover from one lost board via Fiendsmith Engraver and Lacrima GY recursion, Mulcharmy Fuwalos or Purulia draw, and K9 GY-to-field Special Summons
• After siding: No side deck is registered, so no post-side plan can be evaluated; any sideboarding would be unmeasured

Why it scores here

The deck reliably opens a functional K9 starter: the 13-copy archetype core gives about 0.88 odds of at least one core card in a 5-card opening hand, and the 13 searcher-text cards add redundancy. Its interaction is the strongest part of the system, with 9 hand traps (Ash Blossom, Ghost Belle, Ghost Ogre, Droll, Maxx C) and on-board answers (Forbidden Crown, Caesar, Desirae, Jacks) layered across turns. Conversion is the weak link: no recorded boards exist, so the ceiling and median are text-only inferences, and the 40-card list is only 29% exact K9 with Fiendsmith, Mulcharmy, Kashtira and Skyblaster pieces competing for slots. Popularity and archetype share did not earn points, and card scores were not averaged into the deck score; the score comes from consistency, interaction and resilience on the system, reduced for engine conflicts, the lack of a sideboard, and the missing combo data.

Dimension scores

How the score was computed

Strategy profile: Midrange primary, Stun-leaning interaction read noted as context only; structural weights not blended. Structural ≈ 59, Going First ≈ 58, Going Second ≈ 62, Meta = provisional, Tournament Reliability ≈ 55. Modifiers: engine_conflicts (-3); no_side_deck (-2); banlist_exposure (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional, no dated metagame sample)

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

• Dense hand-trap and negation package (9 hand traps, Ash, Ghost Belle, Ghost Ogre, Droll, Maxx C)
• High archetype core presence (13 K9 core copies, 0.88 odds of one in opening 5)
• Strong Xyz and Link bosses with ATK 2800 to 3300 and on-board interaction

Weaknesses

• Low exact archetype purity (29%) and engine conflicts across four sub-archetypes
• No side deck, so no best-of-3 adaptation
• No recorded combos, so ceiling and median cannot be checked against real boards

Critical choke points

• K9 level-5 starters that need the opponent to hold 2 or more cards in hand for Normal Summon
• Limited-status Maxx C and Wraitsoth are single copies, so losing either removes a key interruption

Recommended changes

Evidence & confidence

• Verified: Legal status: 40 main, 15 extra, 0 side, no violations (legality block); Limited and Semi-Limited copy counts are within legal limits (restricted_cards); K9 core presence 13 copies, 0.8773 odds of at least one in opening 5 (probabilities); K9 exact archetype purity 29.1%, 39 off-archetype copies (composition)
• Observed: Usage statistics show K9-17 Izuna, Maxx C, Ash Blossom and Mulcharmy Fuwalos as 100% or 81% inclusion archetype cards
• Inferred: Hand-trap and negation density gives strong interruption resilience (D5, D7); Going-second hand-trap odds of 0.81 support D8; Recursion via Fiendsmith Engraver and Lacrima supports D6 recovery; Engine conflicts reduce D10 and D14
• Provisional: Meta Power is null; no dated metagame sample, no tournament link; Tournament reliability is estimated from brick and error-tolerance factors only; D13 matchup fit is unmeasured
• Data gaps: no combos supplied: combo floor, median and ceiling are text-only inference no tournament link: archetype meta-share and per-pilot match record absent no win-rate telemetry (going-first, going-second, matchup, brick and starter rates) is available Meta Power is provisional unless a dated metagame sample is supplied usage_statistics marks K9-17 Ripper, K9-66X Jacks, K9-X Werewolf and Super Starslayer as not in this deck, but the cards array lists them in the Extra Deck with copies 1; the usage core flags are inconsistent with the card list, so the card list was treated as authoritative no side deck registered (side_count 0), so side-deck evaluation is impossible