How Kahin works

Kahin is a prediction game. Everyone starts with 10,000 coins, earns a daily bonus, and can rebuy once a day if they go broke. Coins can't be bought, sold or withdrawn. The only thing you can win is bragging rights on the Table of oracles, which ranks players by profit (so bonuses don't help you climb).

Table of oracles

Fixtures, live scores, match events and full match stats come from ESPN's public sports feed. For each finished match Kahin reads the half-time score, every goal with its minute, every card, every corner from the play-by-play and each player's line, and cross-checks the per-half breakdowns against the box score before trusting them for settlement.

The data layer is provider-agnostic: API-Football, football-data.org or Sportmonks can be dropped in with an API key, and an offline demo league keeps the game playable if the feed goes down.

Every match is played out 16,000 times by a Monte-Carlo engine. Expected goals come from attack and defence ratings fitted to this season's results and shots on target, with recent games weighted more. When bookmaker prices are available, expected goals are taken from the market instead, since closing lines are the sharpest information there is. Corners and cards come from each club's own record, with card ratings held close to the league average because referees matter so much.

Every market is a single settle function that is run against all 16,000 simulated matches to get its probability, and then against the real result to settle your ticket, so pricing and settlement can never disagree. A margin of 4.5–14% depending on the market is added, like a real book. A backtest against hundreds of finished matches checks the model against bookmaker closing prices and real outcomes.

In play, the engine keeps what has already happened (score, minute, half-time score, corners, cards, red cards) and only simulates the rest, so every market re-prices live. Same-game combos are priced from the joint probability, which is why Home win + Over 2.5 isn't just the two odds multiplied.

Player markets hand every simulated goal, assist and card to a player, weighted by their season record and expected minutes, so scorer bets stay consistent with the match odds.

Result

1X2 (full time, 1st half, 2nd half), double chance, draw no bet, half time / full time

Goals

Over/under 0.5–5.5 for the match and each half, team totals, BTTS (match and halves), exact goals, goal ranges, odd/even, result & BTTS, result & total, clean sheet, win to nil

Halves

Highest scoring half, both halves over 0.5 / 1.5, team to score in both halves, win both halves, win either half

Corners

Totals for the match and each half (e.g. 1st half over 4.5 corners), team corners, most corners, corner handicap, corner ranges, odd/even

Cards

Total cards per match and half, team cards, booking points (yellow 10, red 25), most cards, red card shown, both teams booked

Handicaps

Asian handicap incl. quarter lines, Asian total goals, 3-way European handicap

Exact score

Correct score (match and 1st half) with 'any other' options, winning margin

Timeline

First / last team to score, time of first goal, goal before 10/15/30 min, late goal (76'+), race to 2 / 3 goals, win from behind

Players

Anytime, first and last goalscorer, 2+ goals, hat-trick, assist, score or assist, shots on target, to be carded, sent off

• Singles: one stake per selection.
• Parlay: every selection must win; odds multiply. Picks from the same match automatically become a same-game combo priced on their joint probability.
• System: e.g. 2/4 places every double from four matches (6 lines); you can still return a profit with a loser.
• Cash out: singles and parlays can be closed early for 92% of their current fair value.
• Live bets: in-play tickets are confirmed after a 6-second check against a fresh read of the match.

• All markets settle on 90 minutes plus stoppage time. Extra time and penalties don't count.
• Postponed, abandoned or cancelled matches are void and stakes are returned (a void leg counts as odds 1.00 in a parlay).
• Quarter Asian lines split your stake: you can win or lose half.
• If the feed can't verify a stat for a specific half (e.g. per-half corners), only the affected market is voided.
• Player bets: a player who takes no part is void; own goals don't count for any scorer bet.
• Prices close at kick-off and re-open in play once the live clock is confirmed.

Each sport is a module: a simulator, a stat parser and a market catalogue. The bet slip, parlays, settlement, cash out and leaderboard are shared, so basketball or tennis plug into the same machinery.