Fritz 21 Handbook

Permanent Brain

Contents
Contents

Permanent Brain refers to a chess engine's ability to keep calculating during the opponent's thinking time. All important chess engines use this technique. The chess engine continues its calculations in the background during the opponent's thinking time. If the opponent plays the expected move, the program accesses the results it has already determined and will play its response immediately or at least very quickly. With a high hit rate this saves a great deal of thinking time and leads to a significant increase in practical playing strength.

Settings

If you like to run position tests or solution comparisons with your chess engines, you should switch Permanent Brain off. Otherwise it could happen that the chess engine accesses already-calculated values in the hash tables. This makes concrete comparisons of measured solution times considerably more difficult.

1
2
2.1
Ribbons
2.2
The menu bands
2.3
2.4
2.5
Style specifications
2.6
Board design – 2D board
2.7
Board window navigation
2.8
User Info
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
New board sounds
2.18
Style variants
3
3.1
3.2
3.3
3.4
3.5
3.6
3.6.1
Enter & Analyse
3.6.2
Evaluation of the position
3.6.3
Analysis with the Buddy Engine
3.6.4
FAQ Buddy Engine
3.6.5
Visualize engine analysis
3.6.6
Visual Evaluation
3.6.7
Evaluation history in the search
3.6.8
Different displays in the engine window
3.6.9
Full analysis / Tactical Analysis
3.6.10
A tip for Full analysis
3.6.11
Infinite analysis
3.6.12
Duration analysis with analysis comments
3.6.13
Example Tactical Analysis
3.6.14
Deep position analysis
3.6.15
Blundercheck
3.6.16
Using engines interactively
3.6.17
Blitz & train on Playchess.com
3.6.18
Training questions
3.6.19
Commentary symbols in the Fritz Blunder search
3.6.20
Compare analysis
3.6.21
Automatic analysis of server games
3.6.22
Shootout
3.6.23
The Kibitzer
3.6.24
Parallel analysis
3.6.25
Monte Carlo
3.6.26
Extended Engine Information
3.6.27
3.6.28
3.6.29
3.6.30
The Analysis board
3.6.31
Variation board
3.6.32
Visualize Search
3.6.33
Animated engine variants
3.6.34
Chess problems, mate search
3.6.35
Mate search with Fritz
3.6.36
Tips in the engine window
3.6.37
Calculating Elo ratings retrospectively
3.7
3.8
3.9
3.10
3.11
3.12
4
5
6
Glossary
Learning ability
PGN format
1
2
2.1
Ribbons
2.2
The menu bands
2.3
2.4
2.5
Style specifications
2.6
Board design – 2D board
2.7
Board window navigation
2.8
User Info
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
New board sounds
2.18
Style variants
3
3.1
3.2
3.3
3.4
3.5
3.6
3.6.1
Enter & Analyse
3.6.2
Evaluation of the position
3.6.3
Analysis with the Buddy Engine
3.6.4
FAQ Buddy Engine
3.6.5
Visualize engine analysis
3.6.6
Visual Evaluation
3.6.7
Evaluation history in the search
3.6.8
Different displays in the engine window
3.6.9
Full analysis / Tactical Analysis
3.6.10
A tip for Full analysis
3.6.11
Infinite analysis
3.6.12
Duration analysis with analysis comments
3.6.13
Example Tactical Analysis
3.6.14
Deep position analysis
3.6.15
Blundercheck
3.6.16
Using engines interactively
3.6.17
Blitz & train on Playchess.com
3.6.18
Training questions
3.6.19
Commentary symbols in the Fritz Blunder search
3.6.20
Compare analysis
3.6.21
Automatic analysis of server games
3.6.22
Shootout
3.6.23
The Kibitzer
3.6.24
Parallel analysis
3.6.25
Monte Carlo
3.6.26
Extended Engine Information
3.6.27
3.6.28
3.6.29
3.6.30
The Analysis board
3.6.31
Variation board
3.6.32
Visualize Search
3.6.33
Animated engine variants
3.6.34
Chess problems, mate search
3.6.35
Mate search with Fritz
3.6.36
Tips in the engine window
3.6.37
Calculating Elo ratings retrospectively
3.7
3.8
3.9
3.10
3.11
3.12
4
5
6
Glossary