App version: 1.10.1
Device: Samsung S4 Mini
Operating system: 4.4.2
A useful tool for the casual player wanting to improve their opening play but the serious user and stronger player is likely to be disappointed
Chess Openings Explorer is a free android app developed by Anton Duzenko which is free to download and notably also free from any advertising
The app is an analysis tool which enables chess openings to be studied in two ways by using:
- information from a database of opening moves which is drawn from the results of a large pool of games;
- an integrated chess engine to provide detailed analysis of specific positions and the option to play out games from openings of the user’ choice.
A database of moves with associated frequencies of wins/draws/losses is a commonly used format in established chess database applications. The Openings Explorer uses the normal approach of displaying the results in a ‘tree’ of the individual moves from the current board position. This is an effective approach as it enables the user to quickly see which are the most frequently played moves from a given position and what the also which produces the best results.
The underlying database is perhaps the most important feature of an app dedicated to chess openings analysis. Such an app lives or dies by the quality of the games the database uses; so how does Explorer do in this area? Let’s take a look…
The database of games is literally massive – using 2.3 million games played on the Free internet Chess Server (FICS). This means that the database is large enough to provide a sufficient coverage of openings to a reasonable depth – it also means that (other things being equal) results are more meaningful – in reviewing a potential move I would be more comfortable with the conclusions from 100 games than say 10. The quantity of games certainly allows trends to be identified and enables different moves to be more easily compared.
However, the database size is not all good news; it brings both practical and usability drawbacks:
The vast number of games means that the app size is huge – the developer recommends at least 770Mb of free space – so if your device doesn’t have external memory the app may well be a ‘no-no’ to start with. Additionally, the developer also indicates there are potential problems regarding external storage for non-Samsung users
There is a trade off between quantity and quality. The larger the pool of games used the lower the average quality of the games will be. Put simply, there won’t be 2.3 million games from Magnus Carlsen or Gary Kasparov. As an example, in my own games database of over 4 million games – only some 60,000 were played by players who both had ratings of over 2600 (ie Super-GM). The reality is that many of the FICS games are of very low quality. They are often at blitz time controls between weak players with many poor moves. This obviously impacts on the reliability of the assessments of individual opening moves within the app. As an illustration, there are at least 30 games of the following:
1 – g4 e5
2 – f3 or f4
Of course, this is a terrible opening in it’s own right leading to the quickest possible loss by checkmate – what is worse is that of these 30 games only twice was the immediately winning move 2..Qh4++ played! Equally, it is not hard to find opening moves which drop whole pieces. So, the app isn’t likely to inspire the confidence of the serious openings student or stronger player. However, for the casual or weaker player the quality of the games arguably doesn’t matter so much as they are far more likely to be facing non-optimal moves in the games they play.
The other big disappointment regarding the database lies in the fact that there is no option to change it and load in your own games database. This inflexibility means that you can’t rectify any of the quality issues identified above nor for example use a specific subset of games to practice a particular opening in-depth (eg import a database of solely Budapest Gambit games between Master strength players).
There is however good news with the inclusion of a chess engine which can be used to play and analysis openings which can be used to play a full game. The engine ‘Cuckhoo Chess‘ by the respected programmer Peter Österlund, whilst not being of top strength is still a good one. It feels appropriate and well-matched to the app given the type of player it is likely to appeal to and sufficient for the needs of the user.
Practical use and presentation
The app is relatively simple and easy to use. There are few options and those that are available are easily accessible from a single menu bar. These are practical including the ability ot rotate the board, return to the start position or use the engine
Entering moves is straightforward, simply by tapping the relevant board squares which are highlighted for clarity and there is a back button to return to the previous position.
Visually, the app looks attractive. Although there are no means to alter the chess board or piece type, the options selected are well chosen and make for pleasant viewing. The evaluations for individual moves for the side to move are shown using separate percentages for win (displayed in green) and losses (in red) together with the number of games where that move was played.
Whilst the user experience is generally positive, it must be noted that the app does lack a little polish. The purpose of the app’s settings are not immediately obvious (none are explained) and indeed on discovery several appear rather pointless (‘Hide ActionBar’ – why would the user want a title bar displaying the app name taking up screen room anyway!?). There are a few more detailed specific comments regarding use and presentation on the developer page.
The app has been actively developed with regular updates, the current version dates from June 2015. The app appears well supported. The developer invites feedback and has responded to user feedback left at the Play Store which is always a good sign. It is also clear that user comments have been addressed in subsequent releases.
Whilst it is not a complex app and users of other chess opening apps will no doubt be familiar with the app’s layout and approach, the absence of any simple instructions on the Play Store page or within the app itself is an omission that should be corrected to help beginners and new users.
- Free and ad-free
- Large database of games
- Inclusion of good chess engine for self-analysis
- Size of games database sacrifices quality
- Inability to import/load alternative database
- Settings are not explained and add little benefit
These are my thoughts; if you have used this app what do you think…..