Version 1.48.0 includes improvements to the built-in puzzle generator and other small enhancements. The changes in detail:

• New logic has been added to the Random Play puzzle generator. This makes it possible for puzzles generated in Expert play mode to be harder than ever!
• Improvements to the way the difficulty rating is estimated for puzzles generated by the puzzle generator in Random Play.
• When the help is used to fix mistakes and the option to clear the puzzle is selected, an “are you sure?” popup is now shown. This is to help prevent the puzzle from being cleared accidentally.
• Items in a popup menu are easier to select: blank space next to an item is also sensitive to tapping.
• A fix for the wrong list of leaderboard entries sometimes being shown when switching between the current and previous Random Play leaderboards around the time of the daily leaderboard reset.
• A fix for double-tap value elimination when used on the last free square of a multiple selection. Previously, double-tap wasn’t working in this case.
• Improvements to help explanations.

App version 1.47.1 contains some corrections and improvements, mainly relating to the new way of displaying leaderboards introduced in 1.47.0:

• A fix for the wrong leaderboard sometimes being shown when switching between leaderboards.
• When a leaderboard is viewed on a narrow device, long player names can wrap over two lines if they need to.
• An attempted fix for preventing the Game Center access point from disappearing after the app has been in the background for a while.
• Improvements to animations and transitions.

The following changes have been implemented in app version 1.47.0:

• There is no longer any penalty for using the built-in help with Easy puzzles, no matter how much the help is used. This is aimed at giving better support to new players who are just learning how to solve the puzzles.
• Some small tweaks have been made to the scoring. In particular, 8x8 puzzles now score more points.
• When the option to view a leaderboard is selected from an Options menu, or when the points for a completed puzzle are tapped, the leaderboard is shown in a new way.

Some of the benefits of the new leaderboard display style are:

• it is expected to work more reliably
• dark and light display modes are respected in the normal way
• on narrow screens, player names are not truncated
• it resolves an issue being seen on iPads where a leaderboard was sometimes showing as dark text on a dark background
• it is quick and easy to switch between different leaderboards (just tap the leaderboard picture).

The standard Game Center display style is still used when viewing the leaderboards via the Game Center dashboard, reached by tapping the player symbol on the menu page. For players who prefer the standard leaderboard display style at all times, an option in the Sumaddle app settings makes it possible to restore the previous leaderboard display style.

Version 1.46.0 includes a new spotlight feature for highlighting numbers. 9x9 puzzle generation has also been improved. All changes in detail:

• The new number spotlight feature makes it quick and easy to highlight numbers of the same value. The How To Use and Tips sections of the introduction have been updated to show how the feature works.
• 9x9 puzzles are now generated faster and the puzzles are more likely to involve advanced or expert complexity, when generated at these levels.
• An issue has been fixed where the finish button would sometimes turn active while there will still squares with pencil markings, even though not all blocks had been placed.

The puzzle generator built into the app can now generate 9x9 puzzles! This is the main change in version 1.45.0. All the changes in detail:

• The Advanced and Expert modes of Random Play now support generation of 9x9 puzzles. 9x9 puzzles can also be launched from any play mode when the option to select the size of the next puzzle is enabled in the Random Play settings. The free preview of Random Play has been supplemented with some examples of 9x9 puzzles.
• When puzzles are generated with hidden sum values, the difficulty weighting selected in the settings is now observed more closely.
• Empty squares have a slightly darker appearance than squares with numbers. This gives a clearer distinction between squares where it is known that a number will appear and squares where a block might still be possible. It also helps to make pencil mode easier to use.
• A new app setting makes it possible to disable Game Center completely. The app settings can be found in the section Sumaddle of the device settings.
• The screens for the in-app settings have been de-cluttered by moving additional information into info items which are collapsed by default.
• More improvements to help explanations.

Sounds and haptics have been added to the app in version 1.44.0, which has gone live today. Have fun discovering the different sound effects for when a puzzle is solved!

Other changes included in this version:

• It is now possible to reach the general play settings via the options menu found on the start page of the Challenge Trail and the Puzzle Sets overview.
• For new players, the setting to “show if sums add up correctly” is now on by default. The FAQ section on playing a puzzle explains what this setting shows. Screenshots used in the introduction have been updated accordingly.
• When a number combination is applied to a group of squares that have been selected together (multi-select), it is less likely that an error for an incorrect sum will be signalled after some but not all of the numbers have been tapped in.
• A link to the quick survey has been added to the info panel.

Version 1.43.0 is a return to the regular look following the Holiday Special edition. The extra set of puzzles is still included and can be played until the end of January. Also in this version:

• New logic has been built into the puzzle generator. This may be used when puzzles are generated at Expert skill level in Random Play. Puzzles that involve the new logic can be harder than ever!
• Some improvements to the way that operations are performed on a group of squares that have been selected together. This applies when the squares between two blocks are selected, either by tapping the sum value or by swiping, or when this selection is inverted by tapping the sum value again. More details below.
• More improvements to the help explanations.

The improvements to multi-select operations are as follows:

• If there is only one square left which doesn’t yet have a value, tapping a number button will set the number on that one square. Previously, the number was set as a candidate on the square, which meant the number did not get confirmed until the square was tapped separately.
• If candidate values are eliminated by tapping the numbers twice, the numbers that remain are automatically applied as the chosen combination once the right number of values are left. In other words, the values in the chosen combination are eliminated from the other squares in the same row or column, just as if these numbers had been tapped in individually.
• If the setting to “show if sums add up correctly” has been turned on, it is less likely that an intersecting row or column will show an incorrect sum momentarily while combination values are being applied to the selection.

Version 1.42.0 has gone live in the App Store today. This is a special holiday edition, featuring some graphical adaptions and an additional set of free puzzles. A separate FAQ page for the Holiday Special has more details. Have fun playing the special puzzles!

Other changes included in this version:

• full support for Split View on iPad
• tweaks to the scoring: difficult and very-difficult 8x8 puzzles score more points than previously
• the feedback shown when help is used is more sympathetic!

A new setting has been added in version 1.41.0 to help players with narrowing down the number combinations. When the squares between two blocks are selected, players can now choose to see just the combinations with the right number of values, instead of all possible combiantions.

​The new setting can be found in the General settings under the heading NUMBER COMBINATIONS.