Eight people, two tables, one set of boards. You have already done the hard part: everybody plays the same cards, so nobody gets to blame the deal. Then the last board comes back to the kitchen and someone asks the question that breaks up more home games than tiredness ever does. So who won?
This is where promising two-table nights fall apart. Not because the bridge was bad, but because the group reaches for the wrong arithmetic.
Every board has exactly one comparison
Two tables means each board gets played twice. Your result has precisely one rival: the pair who sat in your direction at the other table and held your cards.
Scoring that is almost embarrassingly simple. Beat them and you get 1. They beat you, you get 0. Identical scores split it, half each. The top on every board is 1, so a 12-board night has 12 available and a good session looks like 8 or 9.
Board seven, nobody vulnerable. Both tables land in four spades. Your table takes ten tricks for 420. The other table takes eleven for 450. They win the board outright and pocket the full matchpoint. Not a sliver of one for the extra thirty points. The whole thing.
Do not add up the raw scores
The instinct at most kitchen tables is to total the plus and minus figures across the evening and declare the biggest number the winner. That is rubber bridge thinking, and it wrecks the comparison you just went to the trouble of creating.
Total points let one board eat the night. Somebody bids a vulnerable slam, brings it home for 1430, and eleven carefully played partscores stop mattering. Duplicate exists specifically to stop that happening, which is the whole point of turning raw scores into matchpoints. Each board counts once, no matter how loud it was.
You have invented board-a-match
Worth knowing: what you are doing has a proper name. When the top on a board is 1, matchpoint scoring and board-a-match scoring are the same thing. Serious teams events run exactly this format, and it has a reputation for being merciless. Every board carries equal weight, an overtrick is worth as much as a game swing, and there is no such thing as a small mistake.
Fun, though. Nothing sharpens a home game like knowing that one careless discard on board three costs the same as going down three doubled.
Or run it as a teams match
Two tables is structurally a head-to-head match, so IMPs work naturally here too. Take the difference between the two raw scores, look it up on the IMP table, and award that many IMPs to the pair with the better result.
Back to board seven. The thirty-point difference between 450 and 420 is worth exactly 1 IMP. At board-a-match it was worth the entire board. That gap tells you everything about how the two methods shape play.
My honest preference for a two-table night: IMPs. With only one comparison per board, matchpoints turn every overtrick into a coin flip that decides a full board, and people start taking silly risks for a trick that should not matter. IMPs keep the big decisions big. If your group would rather not deal with a lookup table, board-a-match is simpler and perfectly good, and you can always switch next week. Neither choice is wrong. They just reward different things, which is the same reason a second table changes the game so much in the first place.
What two results genuinely cannot tell you
The limit nobody mentions: beating the other table means you beat one other pair holding your cards. It does not mean you played the hand well.
Both tables can miss the same cold game. Both can find the same losing defense. When that happens the board splits or swings on an irrelevance, and everyone goes home believing they had a normal evening. A sample of two tells you who won the room. It tells you almost nothing about the bridge.
That is the gap worth closing. Playing pre-dealt hands and comparing your table against everyone else who held those exact cards is what turns a result into feedback, and it is the idea Bridge@Home is built around: your four players sit down as normal, and the scoring compares your board against a field far larger than the eight people in your living room. Same evening, same friends, considerably more honest answer.
Keeping the paperwork sane
One sheet per board, travelling with the board. Contract, declarer, tricks, score. Both tables write on the same sheet, which means the comparison is already done for you when the board comes back.
Do not tally as you go. It slows the night and starts arguments about a board that is still in play. Deal with the movement first (two tables need very little rotation to work), then add everything up over the last cup of coffee.
The takeaway
Two tables gives you one comparison per board. Score it as 1, 0.5, or 0, or convert the difference to IMPs, and never total the raw scores. Then hold the result loosely. You have found out who won the evening, which is not quite the same as finding out who played well.