To complement the new functionality for inverting a selection that was introduced in the previous release, version 1.40.0 provides a new setting that makes it possible to show the sum combinations in inverted form too. This setting can be found in the General settings under the heading NUMBER COMBINATIONS.

​Also in version 1.40.0:

• After playing a puzzle in the section Puzzle Sets, the overview of puzzles now brings the puzzle just played into view automatically. Previously, it was sometimes necessary to scroll down to find the puzzle just played.
• An attempted fix for occasional crashes that have been reported as happening on iPhones running iOS 16.

Players will already be familiar with the technique of tapping a sum value to select the squares between two blocks. A second tap now inverts the selection and selects the squares outside the blocks. This makes it possible to apply updates to all the squares outside the blocks simultaneously, in the same way as it works for the squares between the blocks when these are selected together.

Inverting a selection can help to speed up play, for example:

• It makes it a little easier to set the remainder value when just one square gets left over, such as, setting 1 on the last square when the sum is 14 in a 7x7 puzzle.
• It also makes it easier to eliminate values from the squares outside the blocks, such as, removing 1 from the squares outside the blocks in a 7x7 puzzle when a sum of 8 uses 3 squares.

Inverting a selection is the main change in version 1.39.0. Also in this version:

• In Random Play, the mode used to generate a puzzle is shown on the outcome page.
• Back buttons have been made more responsive.

Sumaddle version 1.38.0 contains some small corrections and enhancements. The changes in detail:

• The page showing the outcome of a puzzle now includes summary information to describe the puzzle just played (this is shown at the top).
• In the performance analysis, the analysis at group level now shows the average points for the puzzles in a group, instead of the total points.
• Long help explanations can now be scrolled. This ensures that the explanations are able to fit within the display space available.
• In Random Play, when the setting for selecting the size of the next puzzle has been turned on, a new option lets players choose to see the outcome page of the previous puzzle when Random Play is first launched. This makes it possible to select the size of the first new puzzle to be generated.
• Also included: some cosmetic improvements, a fix to the way the candidate values for empty puzzle squares are determined and more corrections to the help explanations.

Version 1.37.0 includes a way to play faster, fixes for iOS 16 and some other small enhancements. The changes in detail:

• When a sum value for a row or column is tapped, empty squares are automatically converted to blocks if the number of empty squares exactly matches the number of blocks still needed. This can help to speed up play!
• When a puzzle is in play, the size of the puzzle is now shown for reference. This new feature can be turned off in the settings, if not required.
• When dark mode is in operation and “dark” has been selected as the dark-mode appearance, the sum values are shown in yellow, instead of dimmed white. This makes the sum values easier to distinguish from numbers set on squares in the puzzle grid.
• Fixes for some layout and transition issues when running on iOS 16.
• More improvements to the help explanations.

The new technique for speeding up play is described in more detail in the FAQ section on playing a puzzle - please see the question "is there an easy way to fill the gaps in a row or column when the positions of the blocks are known?".

New settings have been added in version 1.36.0 which allow the following game information to be turned on or off individually:

• the timer seen during play
• the time taken to solve a puzzle
• the points scored
• feedback about the help used
• points lost due to help.

​Players who prefer a more relaxed style of playing and who do not care about timing or scoring can now choose to turn the information off.

Version 1.35.0 includes some measures to help new players get started. There are also some tweaks to the scoring and more improvements to the help explanations. The changes in detail:

• If new players miss the section of the introduction that explains how to use the controls, then an additional button is shown below a puzzle in play. This button provides a quick way to view the how-to-use guide. Annotations are used to highlight the existence of the new button and also the help button.
• Some small tweaks have been made to the scoring, with the aim of evening-up the score rate (points/min) for the different puzzle sizes and levels of difficulty. In particular, players will usually be rewarded with more points when very difficult puzzles are solved.
• More improvements to the help explanations, especially for some of the help that new players typically see first.
• A problem by which a group of selected squares in a row or column was not always being replaced correctly by a new selection has also been fixed.

Version 1.34.0 includes a number of adaptions for providing better support for the device setting Button Shapes (found under Accessibility -> Display & Text Size).

​Also in this version:

• Improvements to the way the leaderboard is brought up to date after the Challenge Trail or Puzzle Sets are played offline.
• More improvements to the help explanations.

A problem with the placement of the sum values at the ends of the rows and columns of a puzzle has been fixed in patch version 1.33.1. This glitch was introduced in 1.33.0 and was being seen when the device setting Accessibility -> Display & Text Size -> Button Shapes is turned on.

It seems that this device setting has other side effects too, such as making buttons consisting of an icon to appear as a small shaded block which is difficult to see. An example of this is the button for the settings when a puzzle is in play, another is the button for the options menu on the page showing the points scored. The aim will be to resolve more of these issues in a future release.

Version 1.33.0 contains a bunch of small improvements, including better support for dark mode and more transparency about how the points are impacted when help is used. The changes in detail:

• The “dimmed” appearance for dark mode is a bit darker, the “dark” appearance is much darker. With the “dark” setting, the blocks in a puzzle are now darker than the empty squares, instead of being lighter than the squares as they were before.
• The scoring algorithm has been tweaked to reduce the rate at which the scores get smaller as the elapsed time grows larger. For puzzles that take a long time to solve, the points will now be more generous than previously.
• The page showing the points scored for a solved puzzle now also reveals the points lost due to using the help.
• If a row or column with a hidden sum has two blocks present, empty squares can be changed to number squares by tapping the space where the sum value would normally be shown, just like this can be done for rows or columns with visible sum values.
• Improvements to the way the buttons “Get puzzling” and “Next puzzle” decide which puzzle to launch. The buttons now take the player back to puzzles that were previously started (and then paused), in preference to starting a new puzzle.
• If players switch from one device to another for playing Random Play, the leaderboard total is now picked up in a more reliable way, allowing a more seamless continuation of play.
• Fixed a problem with the Random Play simulator by which the leaderboard was not being updated correctly after the simulator had been reset.
• Corrections to some of the help explanations that may be encountered when playing Random Play in expert mode.

Performance analysis has been added as a new feature in version 1.32.0. This gives players a detailed overview of which puzzles scored the most points and the time taken to solve the puzzles. Players can also see where help was used the most and the impact that this had on the points scored.

A new FAQ section has been added to provide more information about the new feature, check out the page performance analysis.

Other changes in version 1.32.0:

• ​A new option in the settings makes it possible to turn on a red filter when dark mode is active on the device. This can help to reduce blue light even more.
• New logic has been built into the Random Play puzzle generator, for generating puzzles with even more ingenuity. The new logic is used in the play modes Advanced and Expert.
• Also included: some fixes relating to the use of pencil mode, a fix for rare cases of the help not performing any changes and more improvements to the help explanations