When was Snakes & Ladders invented?
Snakes & Ladders didn't find its way to the UK until the 1890's and later to the USA, where the game is sometimes known today as 'Chutes and Ladders', presumably not to scare people frightened of cartoon snakes (yes, even drawn onto a game board). Originally, the snakes and ladders would have been Indian virtues and vices but that probably wouldn't make for such happy Christmas morning memories for today's kids, or adults.
How do I win at Snakes & Ladders?
Pure luck - so, be lucky with your dice rolls and hope you get to move first. No, seriously - this is one retro board game where skill just doesn't come into play. Who wins, for the most part, will be down to luck only. We say 'for the most part' only because, by simple mathematics, the player who moves/rolls first in a two-player game of Snakes and Ladders will win 50.9% of the time. If you're playing 'normal' rules, you can't influence the outcome of a game of Snakes & Ladders unless you cheat, somehow (fine with us). Perhaps inform your opponent of the game's origins and that they lose, because they have too many vices.
Snakes and Ladders links & resources
Download Snakes & Ladders instructions: C'mon, now. Up the ladders, down the snakes.
Snakes and Ladders @ Wikipedia