A card play trainer — not the bidding
SmartBridge works out how a suit should be played against best defence, tells you the exact chance of success, and then lets you play it yourself on an endless supply of hands. One suit at a time, so you can actually see why a line is right.
Most of us learn card play from rules of thumb — finesse into the danger hand, eight ever nine never. SmartBridge does the arithmetic instead. For any holding you give it, it works out the best line of play and what that line is actually worth.
How the missing cards are likely to split between the defenders — and how that shifts once the auction has told you one of them is long somewhere else.
The line of play that wins most often against best defence, spelled out trick by trick, with the exact percentage or average number of tricks it yields.
Play the suit out card by card. Every card you play is marked against the best line, and you are told what a mistake cost you.
Every percentage is computed, not looked up. SmartBridge evaluates every layout of the missing cards that is still possible, weighted by how likely it is, and plays each one out against best defence. Nothing is rounded off to make you feel better — and where two lines are worth exactly the same, it says so.
Say how many cards you and dummy hold together in the suit, and SmartBridge computes the probability distribution of the cards you are missing — 3–2, 4–1, 5–0 and the rest, each with its exact chance and the number of ways it can happen.
The auction usually tells you something. If one defender has shown length elsewhere, set the vacant places for each hand and watch the whole column move: the a‑priori figures give way to the odds that actually apply at your table.
Tap the cards to give each one to North, to South or to the defenders. Set how many times you can still reach each hand from outside the suit, add anything the auction told you about where the missing cards sit, and SmartBridge returns the best line of play and its exact success percentage.
The line is written out the way a player would say it — "lead low to the jack, finessing the king" — with the branches that matter: what to do if it loses, and what changes if a defender shows out. You can then practise that very holding.
You are dealt a suit, told how many entries you have and given a goal — make at least so many tricks, or simply make as many as you can. Then you play it, one card at a time, choosing from either hand.
Every card is marked as you play it. Play the best card and it says so; play an inferior one and it tells you which card was better and exactly what yours cost. At the end you see the whole deal — including both defenders' hands — and the line you should have taken.
Ask for the best play and SmartBridge writes out the line trick by trick, with the conditions that change it: what to do if the finesse loses, which card to put up when a particular honour appears, and what to switch to if a defender turns up with none.
Where a line is a genuine safety play — giving up a trick to be sure of the contract — it says so, and shows you what the greedy alternative would have cost.
Choose how difficult the hands go. The level decides how much there is to work out — not how many cards you hold.
The app speaks English and Dutch, and the text size is adjustable throughout — useful at a club table in poor light.
SmartBridge is in its test period, so the whole app is currently free — every tool, every level, no limits and nothing locked away.