The 1-Bar Vision Scanner
Snap a photo of their messy carbon scoresheet. Engineered for weak tournament hotel Wi-Fi and 1-bar hallway signals, the scanner digitizes the game in seconds—bridging the physical-to-digital divide while you wait.
Personal Chess Intelligence (PCI)
Put your next opponent in Zugzwang before the clock starts.
Prepzwang is a Personal Chess Intelligence (PCI) platform built by a chess parent, for chess parents and coaches. We bridge the physical-to-digital divide in OTB scholastic chess: a low-bandwidth cloud vision pipeline digitizes handwritten carbon scoresheets, while our local on-device AI delivers instant post-round debriefs, player DNA analytics, and next-round preparation in under 90 seconds.
Encrypted submission · early access cohort · zero spam
Handwriting OCR99.4% accuracyScan to PGN0.8sStockfish Eval14...Bxh2+ (-3.8)
PGN Sync14... Bxh2+!White King in Check · Eval: -3.8 (M6)PGN Exported
OTB GRAND PRIX // ROUND 5
Board 3 · Time Control 90+30
1d4 Nf6
2c4 e6
3Nc3 Bb4(Winawer)
4e4 c5
5d5 Qa5+
6Qd2 Qxd2+
7Nxd2 Nc6
Analog → Digital · hover to scrub the beam
Built For The Tournament Floor
Select your role between rounds:
OTB Chess Scoresheet Scanner & PGN Converter
Frictionless scanning for every parent.
Whether you are a rated club player or just learning how the knight moves, you shouldn't waste 30 minutes manually retyping algebraic notation in a noisy tournament hallway. Built by a chess parent, Prepzwang is the premier chess scoresheet scanner and PGN converter that lets you digitize your child's OTB games effortlessly while you wait.
Visual Auto-Heal
Kids scribble illegible moves under pressure. Instead of squinting to decipher bad algebraic notation, automated move-legality validation heals errors automatically and lets you resolve smudges by matching visual handwriting crops.
The 90-Second Debrief & Regional Rematch Radar
Get supportive, kid-friendly hallway feedback to help your child reset emotionally alongside on-device head-to-head scouting that recalls prior encounters and previous blunders against familiar regional rivals.
For Private Coaches · Skittles Room Command Center
The ultimate skittles room command center.
Stop wasting 30 minutes manually retyping paper scoresheets while managing multiple students between rounds. Prepzwang scales your time, allowing you to focus on high-impact coaching rather than data entry.
Zero-Friction Sync
As soon as a parent snaps a photo of the scoresheet in the hallway, the verified PGN pushes directly to your phone or tablet app queue (or opens instantly in the coach web viewer).
Rapid Student Triage
Review three different students in 10 minutes. Jump straight to the exact opening deviation and critical swings on a clean interactive board, and drop in coaching notes and move annotations for post-tournament study.
Next-Round Matchup Radar
Pull up the upcoming opponent's local dossier and give your student three highly targeted, actionable prep rules before they sit back down at the board.
The Tournament Asymmetry
The Old Tournament Scramble vs. Board-Ready Asymmetry
Most competitors analyze with the same engines on the same positions. The real advantage is closing the gap between the flag falling and your next opponent sitting across the board.
The Old Scramble
30 minutes of manual move entry
Hunched over a phone screen between rounds, retyping 60+ moves one by one while your mental stamina runs out.
Missed critical turning points
Key moments and decisive blunders slip through the cracks — the game that lost itself is never actually understood.
Lingering tilt into Round 2
Without a structured debrief, unresolved frustration and unaddressed mistakes carry straight into the next round.
Scoresheets trapped in paper binders
Physical scoresheets filed and forgotten — zero cross-game pattern tracking across tournaments and seasons.
Prepzwang PCI Advantage
The 1-Bar Vision Scanner
Deciphers messy handwriting and carbon copies instantly. Engineered for terrible venue Wi-Fi, the app compresses images to successfully ping the cloud vision engine on a 1-bar signal. Once digitized, the remaining prep runs locally. Zero chess literacy required
90-second executive triage
Flags decisive turning points and attributes human blunders — tactical oversight, positional drift, or clock-pressure rush.
Continuous OTB Player DNA
Detects time-trouble leaks and fatigue curves after move 35, building a lifetime physical career archive of your playing profile.
Next-Round Matchup Radar
Instant on-device head-to-head history against familiar regional rivals—revealing past blunders and 3 actionable prep rules 2 minutes before clocks start.
The Four Pillars of Personal Chess Intelligence
One pipeline that turns paper into board-ready intelligence
Every capability in Prepzwang is engineered around a single loop: scan, triage, learn, and prepare — compressed into the 90 seconds between the flag falling and your next opponent sitting down.
01
Smart Scoresheet Vision
High-precision computer vision that deciphers pencil smudges, carbon copies, and non-standard notation with zero chess literacy required.
02
Rapid Round Triage
The 90-second debrief. Combines kid-friendly hallway feedback with a deep-dive technical focus: decisive turning point, opening deviation, and human failure modes (Tactical Oversight, Positional Drift, Clock-Pressure Rush).
03
OTB Player DNA & Blind-Spot Engine
Lifetime physical career archive, endgame liquidation trends, and psychological stamina curves built from every offline round.
04
Next-Round Matchup Radar
The pocket second. Board-ready preparation, curiosity-driven prep, and pre-round clarity before the clocks start.
Pre-Launch · Frequently Asked Questions
Answers before the next round.
The exact questions tournament players, coaches, and arbiters ask us most about the closed beta.
Prepzwang uses specialized computer vision and chess-specific neural networks trained on thousands of handwritten notation variations. It validates move legality against official chess rules and outputs standard PGN files.
Yes. The image enhancement pipeline is specifically calibrated for faint carbon-copy slips, smudged ink, and varied tournament lighting conditions.
Yes. Prepzwang exports clean, standard PGN files with full FIDE/USCF header tags, ready for one-click import into Lichess and Chess.com.
Founding members receive priority invitation to Batch 1 closed beta access and exclusive lifetime perks, including complimentary cloud Stockfish evaluation credits.
Prepzwang is built mobile-first, so you can scan scoresheets and review games on the go from any smartphone. There is no full-fledged desktop app—the web view is exclusively for coaches to review student games.
PCI is Prepzwang's core loop that converts a physical scoresheet into board-ready intelligence: Smart Scoresheet Vision deciphers your notation, Rapid Round Triage flags the decisive turning point and blunder attribution, the OTB Player DNA engine learns your offline patterns over time, and the Next-Round Matchup Radar prepares you for the next opponent before the clocks start.
Snap your scoresheet within seconds of the flag falling. In about 90 seconds you get a dual-layer triage of the game — supportive, kid-friendly feedback alongside a deep technical breakdown of the turning point, opening deviation, and whether a blunder was a tactical oversight, positional drift, or clock-pressure rush — plus opponent scouting and 3 board-ready prep rules before your next opponent sits down.
Every scanned tournament game adds to a lifetime offline career archive. Prepzwang tracks endgame liquidation trends, recurring positional blind spots, time-trouble leaks, and psychological stamina curves — so your preparation sharpens round after round and tournament after tournament.
Early Access · Tournament Beta
Request early beta access
Beta Access · Regional Cohorts
Rolling out region by region.
Here's why.
We stage access across tournament metros to guarantee sub-second AI transcription speeds, peak recognition accuracy during live rounds, and dedicated onboarding for competitive coaches.
- Staged regional batches to guarantee sub-second server latency
- Dedicated calibration for regional tournament scoresheets
- Priority access locked for founding coaches and players
Regional Allocation · Live
Synced
New York Metro
Founding cohort
86%
Northern California
Founding cohort
62%
Texas Scholastic
Batch #2 · opens Q1
24%
Mid-Atlantic
Batch #3 · opens Q2
9%
Allocation figures shown for the current founding cohort. Batch #3 is in soft-review for select regions.