Function and unwanted side effect can be observed or measured.
TRIZ
A practical method guide: clarify prerequisites and materials, understand the complete process, and look up outputs, pitfalls, and stop criteria.
Prerequisite
What needs to be finished first
Preparation
What needs to be ready before start
System sketch, conflict measurements, resource list and verified principles or contradiction reference.
System experts, technical specialists, TRIZ-informed facilitator and test owner.
Describe system boundary, desired function, harmful effect and available resources using concrete data.
60–120 minutes concept work; technical testing separately
Place system sketch and measurements beside the contradiction; visibly document the principle-selection route.
Core question
The one question this method answers
How can we improve one property without sacrificing the other required property?
Flow
Phases with goal, actions, output and pitfall
TRIZ abstracts a concrete technical problem as a contradiction and uses established solution principles to develop concepts. This introduction covers technical and physical contradictions; full TRIZ includes further analysis tools.
TRIZ· worksheet
Fictional example
TRIZ abstracts a concrete technical problem as a contradiction and uses established solution principles to develop concepts. This introduction covers technical and physical contradictions; full TRIZ includes further analysis tools.
System and function
Which system should perform which function under which conditions?
Fictional: a portable laptop stand should be rigid in use and compact in transit.
Contradiction
Which improvement worsens what, or which property needs opposite states?
Rigid joints provide stability but prevent folding. The same joint must be immobile in use and mobile in transit.
Selection route and principle
Which reference and principle follow from the contradiction, and how?
Physical contradiction: separation in time. Principle 15, Dynamicity: joints unlock for transit and lock in use. No matrix lookup is claimed.
Concept
How is the principle implemented using available resources?
Folding joint with positive locking; existing frame surfaces act as stops.
Test both sides
Which measurements test both requirements and possible side effects?
Test under 5 kg load, folded dimensions and repeated locking; results remain open.
All example details are fictional and illustrate the application.
- 1
System
System

Goal
System model
Inputs for this step
- System data
- Requirements
Actions
- Describe useful function, harmful effect and available system resources.
- Bound the problem’s location, time and conditions.
Output
System model
Is the conflict concretely observable?
Quality check
Is the conflict concretely observable?
Pitfall
A solution is already embedded in the problem. Name function and unwanted effect without prescribing a solution.
Timing: 10–20 minutes
- 2
Contradiction
Contradiction

Goal
Contradiction model
Inputs for this step
- System model
- Measures
Actions
- Technical: improving X worsens Y. Physical: one property must have opposite states.
- Explicitly record the fitting type and conditions.
Output
Contradiction model
Are both conflict sides and conditions clear?
Quality check
Are both conflict sides and conditions clear?
Pitfall
Two unrelated goals are labelled a contradiction. Show the mechanism linking improvement to deterioration.
Timing: 10–20 minutes
- 3
Principles
Principles

Goal
Justified principles
Inputs for this step
- Contradiction
- Principles reference
Actions
- Consult an appropriate matrix for technical parameters or separate physical opposites by time, place or condition.
- Document selected principles and the selection route.
Output
Justified principles
Is the selection justified and traceable?
Quality check
Is the selection justified and traceable?
Pitfall
An arbitrary idea receives a TRIZ label afterwards. Return from contradiction to principle and explain the translation.
Timing: 10–20 minutes
- 4
Concepts
Concepts

Goal
Solution concepts
Inputs for this step
- Principles
- Resources
Actions
- Sketch multiple concrete implementations using available resources.
- Explain how each variant should preserve both requirements.
Output
Solution concepts
Does the concept resolve rather than merely move the conflict?
Quality check
Does the concept resolve rather than merely move the conflict?
Pitfall
One requirement is silently weakened. Keep both requirements unchanged beside the concept.
Timing: 20–30 minutes
- 5
Verification
Verification

Goal
Technical test brief
Inputs for this step
- Concepts
- Test conditions
Actions
- Test concepts against both target properties and new side effects.
- Leave unverified assumptions open and define the next technical test.
Output
Technical test brief
Are both target properties demonstrably satisfied?
Quality check
Are both target properties demonstrably satisfied?
Pitfall
A vivid concept is treated as a working invention. Require prototype and measurement before approval.
Timing: 15–30 minutes
Artifact
What comes out at the end
Sketch: what the artifact looks like
Contradiction model, justified principle selection and concrete concepts with tests for both target properties.
Record date and scope; retain the previous version and reason when changing it.
- Paper and system sketch
- Verified principles reference
- Technical prototype and measurement tools
triz-working-template.md
Describe system boundary, desired function, harmful effect and available resources using concrete data.
TRIZ: Worksheet
Question
To be confirmed
Desired outcome
To be confirmed
Scope
Complete cycle Time: 60–120 minutes concept work; technical testing separately
Complete this worksheet on paper or in your own document during the work.
Preparation for this scope
Method setup
- Materials: System sketch, conflict measurements, resource list and verified principles or contradiction reference.
- Roles: System experts, technical specialists, TRIZ-informed facilitator and test owner.
- Advance information: Describe system boundary, desired function, harmful effect and available resources using concrete data.
- Overall time needed: 60–120 minutes concept work; technical testing separately
- Setup: Place system sketch and measurements beside the contradiction; visibly document the principle-selection route.
Prepare for the work steps
System: System
- System data
- Requirements
Contradiction: Contradiction
- System model
- Measures
Principles: Principles
- Contradiction
- Principles reference
Concepts: Concepts
- Principles
- Resources
Verification: Verification
- Concepts
- Test conditions
TRIZ· worksheet
System and function
Which system should perform which function under which conditions?
...
Contradiction
Which improvement worsens what, or which property needs opposite states?
...
Selection route and principle
Which reference and principle follow from the contradiction, and how?
...
Concept
How is the principle implemented using available resources?
...
Test both sides
Which measurements test both requirements and possible side effects?
...
Answer the prompts with your own information. Explicitly mark unknowns and assumptions.
System: System
Expected artifact: System model
Is the conflict concretely observable?
Entry:
...
- Is the conflict concretely observable?
Contradiction: Contradiction
Expected artifact: Contradiction model
Are both conflict sides and conditions clear?
Entry:
...
- Are both conflict sides and conditions clear?
Principles: Principles
Expected artifact: Justified principles
Is the selection justified and traceable?
Entry:
...
- Is the selection justified and traceable?
Concepts: Concepts
Expected artifact: Solution concepts
Does the concept resolve rather than merely move the conflict?
Entry:
...
- Does the concept resolve rather than merely move the conflict?
Verification: Verification
Expected artifact: Technical test brief
Are both target properties demonstrably satisfied?
Entry:
...
- Are both target properties demonstrably satisfied?
Open questions and next steps
...
Method guide: https://methodatlas.meierhoff-systems.de/en/methods/triz/run-sheet
Example output
Concrete filled scenario, fictional example
Fictional example for orientation. Counts and timings describe this case and are not universal requirements.
triz-beispiel.md
Concrete filled scenario, fictional example
Fictional example
System and function: Fictional: a portable laptop stand should be rigid in use and compact in transit.
Contradiction: Rigid joints provide stability but prevent folding. The same joint must be immobile in use and mobile in transit.
Selection route and principle: Physical contradiction: separation in time. Principle 15, Dynamicity: joints unlock for transit and lock in use. No matrix lookup is claimed.
Concept: Folding joint with positive locking; existing frame surfaces act as stops.
Test both sides: Test under 5 kg load, folded dimensions and repeated locking; results remain open.
Pitfalls
Recognize symptoms and steer against them
Quick overview, the full text is in the matching phase in the flow
- SystemA solution is already embedded in the problem.View in phase
- ContradictionTwo unrelated goals are labelled a contradiction.View in phase
- PrinciplesAn arbitrary idea receives a TRIZ label afterwards.View in phase
- ConceptsOne requirement is silently weakened.View in phase
- VerificationA vivid concept is treated as a working invention.View in phase
System
A solution is already embedded in the problem.
Name function and unwanted effect without prescribing a solution.
Contradiction
Two unrelated goals are labelled a contradiction.
Show the mechanism linking improvement to deterioration.
Principles
An arbitrary idea receives a TRIZ label afterwards.
Return from contradiction to principle and explain the translation.
Concepts
One requirement is silently weakened.
Keep both requirements unchanged beside the concept.
Verification
A vivid concept is treated as a working invention.
Require prototype and measurement before approval.
Stop criteria
When to pause, resolve prerequisites, or choose another approach
Finished the method guide?
Go to the profile for purpose, similar methods, and sources or continue to the next method in the catalog.

