ChessOK
products comparison

ChessOK
Aquarium 2019
Houdini Aquarium 2019
Houdini PRO
Aquarium 2019

Chess Assistant 19 Basic

Chess Assistant 19

Chess Assistant 19 PRO

Price (download version)

35.95

53.95

89.95

48.95

78.95

123.95

Engine Included

Houdini 2

Houdini 6

Houdini 6 PRO

Houdini 2

Houdini 6

Houdini 6 PRO

Approx. Engine Rating

3000

3350

3400

3000

3350

3400

Engine Max Cores

6

6

128

6

6

128

Chess King LEARN Subscription
3 months
3 months
12 months
no
3 months
12 months

Play against the computer

Yes
Yes
Yes
Yes
Yes
Yes

Playing with handicap

Yes
Yes
Yes
No
No
No

Game Analysis

Yes
Yes
Yes
Yes
Yes
Yes

Interactive Deep Analysis (IDeA)
the most advanced analysis method

Yes
Yes
Yes
No
No
No

Tree Mode

Yes
Yes
Yes
Yes
Yes
Yes

Advanced Tree Mode,
building new trees

No
No
No
Yes
Yes
Yes

Advanced database management,
identical games detection

No
No
No
Yes
Yes
Yes

Lomonosov Tablebases access
in the Aquarium interface

Yes
Yes
Yes
No
No
No

Lomonosov Tablebases
access on chessok.com

Yes
Yes
Yes
No
Yes
Yes

Chess Openings Encycopledia

No

No

No

Yes
integrated
Yes
integrated

Yes
integrated

Publish your chess text:
Print or word processor

Yes
Yes
Yes
Yes
Yes
Yes

Publish to web and blog

Yes
Yes
Yes
No
No
No

Databases with fast searches

Yes
Yes
Yes
Yes
Yes
Yes

Advanced Search System

No
No
No
Yes
Yes
Yes

Databases Size

7.077 million

7.077 million

7.077 million

7.077 million

7.077 million

7.077 million

Weekly database update

1500
games**

1500
games**

1500
games**

1500
games**

3000 games
(auto update)

3000 games
(auto update)

Multilingual

Yes
Yes
Yes
Yes
Yes
Yes

Windows 10 compatible

Yes
Yes
Yes
Yes
Yes
Yes

64-bit support

Yes
Yes
Yes

Yes

Yes

Yes

64-bit optimized

Yes
Yes
Yes

No

No

No

** - Chess Assistant 19 automatically downloads premium game updates. For other programs, visit the Free Game Service page to download free updates manually.