Rival Chess: Be the Champion

Chess Mentor LLC

In-app purchases

About this game

FROM THE STREET TO THE INTERPLANETARY.

Eight championships. 56 named rivals. One title.

Climb from the Street Championship to the Interplanetary Challenge. Every rival is calibrated to your rating. Every boss defeated unlocks your next title. Become a real champion.

AN ARCADE CHESS GAME.

Pick your fight. Beat the boss. Climb the next championship. Each opponent is a named character with their own voice, style, and rating.

Wins move the climb. Mistakes become training (see Drills below).

POWERED BY PROPRIETARY AI.

Every opponent is a proprietary neural network — 19 nets in all, one per Elo bracket, each trained on millions of real human games. A 1200 rival plays like a 1200. A 2200 rival plays like a 2200.

Bot pacing comes from an XGBoost model trained on 5.6 million Lichess moves. Eleven features per position — eval, ply, time pressure, threats, recaptures. Your opponent doesn't think in metronome ticks. They think the way someone at that level thinks.

Drills are statistical, not random. We extract the exact moments you lost win probability in your own games, then build a replay loop with an Elo-scaled difficulty window. The position you fumbled at 1850 plays back against a 1850 opponent.

All of it runs on your device — no server round-trips, no privacy leak, no monthly bill.

THE 8 CHAMPIONSHIPS

1. The Street (free)
2. The Neighborhood
3. The City
4. The State
5. The National
6. The Continental
7. The World
8. The Interplanetary — the final boss, against Caïssa herself

A FAMILY TRIBUTE

Every championship climbed is a step toward the dream your grandfather never finished. The narrative weaves through the entire app — reminders, milestones, the final boss.

HOW IT WORKS

• Play named rivals at your level
• We detect your biggest mistakes automatically
• Each mistake becomes a Survival Drill
• Replay the position and hold it to master it

Improvement isn't homework. It's a side effect of playing.

COACHES THAT NOTICE YOUR MISTAKES

Unlock 3 named mentors as you progress — the Library Sage, Master Helena, the Sensei. Each one teaches the patterns YOU are missing.

WHAT YOU GET

• Unlimited games vs rating-matched opponents
• 56 named rivals across 8 championships
• Survival Drills from your own games
• Full game analysis
• Bullet, Blitz, Rapid ratings
• Champion-of-X title progression
• 3 unlockable coach mentors
• Custom boards and pieces
• Game history + replay

NO SUBSCRIPTIONS

One-time purchase. No monthly fees. No tricks.

Buy once. Climb forever.

What’s new

ANOTHER ROUND — new features + heavy polish.

• Opponents now talk to you mid-game (speech bubbles)
• Pulsing yellow ring highlights your next circuit challenge
• Music alternates during play (24 gameplay tracks now)
• End-of-game audio cues: wins, losses, and the Caïssa finale
• Circuit opponents adjust ELO live to your rating
• Brand-new logo + splash
• 60% smaller download — installs faster

Plus polish across layout, badges, animations, and translations.