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Design your bidding systems from scratch, run simulations and analyze any deal

Bidding Architect

Build your system, agreement by agreement...

...then memorize it, card by card

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Blue Team Club17+ HCP, any shape; artificial and forcing
117+ HCP, any shape, forcing
10-6 HCP, 0-2 controls, F1
17+ HCP, 0-2 controls, GF or 4 of a minor
13 controls, GF
1NT4 controls, GF
25 controls, GF
Library
System libraryCurated systems to import in one click

Blue Team Club

The Italian strong-1 system: control responses, canape reverses, 4-card majors, Scanian-style 1NT transfers, weak 2/2, Turbo cue-bidding.

Strong ClubEn

ACBL SAYC

The standard American natural system from the ACBL: 5-card majors, 15-17 1NT, strong 2, weak 2/2/2, Jacoby 2NT, Stayman, transfers, Gerber, and Blackwood.

SAYCEn

Standard English Acol

The classic British natural system: weak 1NT (12-14), 4-card majors, weak 2/2/2, strong 2, negative doubles, Stayman, transfers, and Blackwood.

AcolEn

Nightmare

An Italian strong-1 system with multi 2, transfer-style responses over 1/1, weak 1NT (11-14), and a slam-oriented style with almost no invites.

Strong ClubEn
Versions
Version historySnapshot and roll back at any time
v1.4current2 days ago
Refined 1NT transfers; added Lebensohl over 2
v1.31 week ago
Added Stayman variations over 1NT
v1.23 weeks ago
Polished 2 interference defense
v1.11 month ago
Filled in 1 - 1 continuations
v1.02 months ago
Initial draft
Community
CommunityExplore what others play

PerDonati

by Giovanni Donati
2/1 GFIt

SaLo Bridge, dutch doubleton

by Simon de Wijs
2/1 GFNl

Defense vs Polish

by Federico Iavicoli
Polish Club

Full System Juan F. Cuervo

by Juan Felipe Cuervo
Build
Start Building

Bridge Lab

Define constraints for any seat... 

...or pick the exact cards 

Generate matching deals on demand 

Simulate contracts across thousands of boards 

Build a plan and watch it climb the field 

Study every seat's HCP, shape and length 

Analyze which leads defeat the contract

Constraints
South - a 1NT opener15-17 HCP, balanced
ShapesSuitsHonorsHCP
Custom Suit Ranges
RequiredExcluded
Set min-max card counts per suit.
Min
Max
Spades
25
Hearts
25
Diamonds
25
Clubs
25
+ Add
Cards
South HandPick 13 cards
6/13 cards
spades
AKQJT98765432
hearts
AKQJT98765432
diamonds
AKQJT98765432
clubs
AKQJT98765432
Generate
Matching dealsUp to 20,000 per generation
14,328 / 20,000
North9
9 8 6 3
K J 4 2
8 6 4
8 3
West7
Q T
A T 5
T 9 2
J T 5 4
#142
East8
J 7 5 2
8 6
Q J 7 3
Q 7 2
South16
A K 4
Q 9 7 3
A K 5
K 9 6
Simulate
Contract analysisAcross 5,000 boards
4by S
Success rate
78.4%
Avg tricks10.32
Avg score+584
Top score %42.8%
3NTby S
Success rate
48.0%
Avg tricks8.42
Avg score+118
Top score %21.4%
Plans
Game planIf-this-then-that contracts
N HCP 18
6by S
NS 9
4by S
Fallback3NTby S
#Contender% MPIMP/bd
1Game plan84.2+1.32
24by S71.5+0.18
33NTby S58.3-1.50
Player stats
South - HCP & shapeWhat the seat actually held
HCP distributionavg 15.8·med 16
8
10
12
14
16
18
20
Hand shapes5 of 14
5332
32.4%
4432
21.6%
4333
17.2%
5422
12.8%
5431
8.1%
Lead
Lead table vs 4Ranked by defeat rate
CardDef tricksDefeat %MP %
34.6278.4%71.0
K4.1056.2%48.3
A3.8548.7%42.5
23.4831.2%35.1
Q3.2122.4%28.9
Constraints

Deal Analysis

Two engines: the double dummy truth of any deal, and the odds of a contract before all four hands are known

Perfect information

Double Dummy Solver

Read a deal from a photo, your voice, or manual entry.

Image

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Voice

Dictate the deal - we transcribe

Manual

Enter cards by hand - click or type

Analyze a Deal
Monte Carlo odds

Contract Success Rate

Enter two hands and a contract - we deal the rest and count the makes.

4S
78%
3NTN
52%
6S
21%
Test a Contract