K9 Deck #773531 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 57/100 (±6 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: Xyz and Link beatdown from a K9 engine (K9-X Werewolf, K9-66X Jacks, K9-17 Ripper) backed by Vanquish Soul ATK pressure and Vanquish Soul Caesar Valius / Heavy Borger.; Vanquish Soul Link and Xyz boards (Rock of the Vanquisher, Saryuja) that pressure through monster-only attack restrictions.
• Turn 1 (going first): Open a K9 or Vanquish Soul starter (K9-17 Izuna, Vanquish Soul Hollie Sue, Dr. Mad Love) that searches or Special Summons a second engine piece, then Xyz or Link into the Extra Deck threat.
• Turn 2 (going second): Hold Ash Blossom, Maxx C, or Bystial Druiswurm to answer the opponent's first monster effect, then build the same K9 or Vanquish Soul board on the next turn.
• Recovery: Rebuild from the Deck through searchers (A Case for K9, Vanquish Soul, Start!, Chaotic Elements) and Vanquish Soul revive loops; the 15-card Extra Deck gives multiple Xyz and Link routes.
• After siding: No side deck is registered (side count 0), so there is no post-side plan; the deck cannot adjust to matchups within a best-of-3 as built.

Why it scores here

The deck reliably opens a K9 or Vanquish Soul starter: the archetype core group (26 copies) has an estimated 0.997 chance of at least one piece in the opening five, and the searcher text group (16 copies) is about 0.94 (Inferred). Conversion is modest and rests on text, not recorded boards, since no combos were supplied; the ceiling and floor are both Inferred. Interaction is the strongest area, with four hand traps, three negation-text effects and ten removal-text effects, but the deck has no going-second side plan. Score comes from consistency, a layered interaction suite and an Extra Deck with several routes, not from K9 being a popular archetype and not from averaging the individual card scores. The split between two engines (K9 and Vanquish Soul) and several single-copy staples lowers the score.

Dimension scores

How the score was computed

Strategy profile: Midrange primary; Toolbox weight not applied separately. Structural ≈ 61, Going First ≈ 60, Going Second ≈ 58, Meta = provisional, Tournament Reliability ≈ 57. Modifiers: engine conflict (-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) ≈ 0.94 · key two-card combo ≈ — · full-brick estimate ≈ 0 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Core archetype access is very high (0.997 for at least one core card in an opening five).
• Layered interaction: four hand traps, negation-text effects, and about ten removal-text effects.
• Extra Deck has 11 Xyz and 4 Link threats, so the same resources can reach several boards.
• Searchers (16 copies) plus revive text keep the deck from running out of follow-up.

Weaknesses

• Two engines compete for the same hand slots, and the exact-name purity is only 27.3%.
• No side deck, so the deck cannot adapt between games in a best-of-3.
• Many single-copy staples and tech cards increase the chance of a dead hand.
• No combo or matchup data, so the ceiling and floor are both unverified.

Critical choke points

• Going second, the opponent's first monster effect has to be answered by one of four hand traps (each 1-3 copies), so a single opening hand with none can stall.
• The engine depends on the K9 Xyz and Link routes in the Extra Deck; losing those to a single removal leaves the Vanquish Soul board thin.

Recommended changes

Evidence & confidence

• Verified: Main deck 40, Extra 15, Side 0, status Legal under the Master Duel size rules.; Limited and Semi-Limited copy counts are within legal limits for every restricted card.; Archetype usage shows K9 and Vanquish Soul core cards at 100% and 60% inclusion.
• Observed: Archetype-core probabilities computed from the resolved list (hypergeometric).
• Inferred: Consistency (D1), brick rate (D2) and interaction density (D7) are estimated from card text and hypergeometric draws, not from recorded boards.; Going-second plan depends on hand traps reading the opponent's first effect, which the text supports but no data confirms.
• Provisional: Meta power and matchup fit (D13) need a dated metagame sample; none is supplied.
• 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 are absent. No win-rate telemetry (going-first/second, matchup, brick and starter rates). Usage statistics mark several Extra Deck cards (for example K9-66X Jacks, Number 104: Masquerade, N.As.H. Knight, Divine Arsenal AA-ZEUS) as in this deck=false although the card list includes them, so the usage flags look stale and were not used. Deck title is null and no side deck is registered. Meta power is provisional without a dated metagame sample.