The following images show a few features in the client V1.12.10.
In the above image, the big red dots on game board units are units that can be captured by placing the king in check or checkmate at the next attackers move. The future capturing units feature show upcoming attacks to the king and is only available to the player with a skill level of beginner. This feature was designed to teach chess to the beginner chess player.
In the above image, the path to king are units in a straight line showing where the attack on the king is coming from. The attack can either be from a queen, rook or bishop. The straight path to king is referred to by units highlighted in the color purple.
There can be a total of eight paths to the king. Any one of those paths will be highlighted when either the king is in check or when there is only one defender blocking a check.
The image above shows a two player offline game of checkers.
In the image above, the lobby is where you join or create a room to play a game online. Also, this image shows, in order of display, the tournaments where you can play an unrushed game of chess, the daily quests to get some experience points or house coins or credits, the house feature where you can buy furniture or move furniture or rotate furniture or z-order furniture. At the creating room, you can create the type of game you would like to host. You can set the number of players in that room or set other configurations such as allow/disallow spectators.
The image above refers to the house feature. Notice the furniture items that you can purchase with house coins. Also, notice that any item can be moved and or rotated.
You can purchase furniture if you have the required house coins. You can get those coins by doing daily quests or playing a game at an event day.
You are able to place a plant under the table so that maybe only a small part of the plant can be seen. You can also place it on top of the table. You can do those things by changing the plant's z-order.
Every furniture item has two images on the map but only one is seen. When you purchase a furniture item, that image is drawn on the map overtop and in front of the walls and doors. The image is shown to you. Another image is drawn to the map underneath and behind the walls and doors. The image is hidden to you. Either the plant in front of a wall or behind the wall is displayed to you but not both of that plant's images are shown/hidden at the same time.
Displaying a furniture item in front or behind of a wall or door is not changing its z-order. To understand how z-order works with the house feature, think of two stacks of images. One stack of images are in front of the wall and the other behind. Those stacks of images are the furniture. Each image in a stack can be displayed on top of each other, its z-order, but one stack can not change another stack's z-order. When showing or hiding a furniture item, an image in one of those stacks are hidden and the same image in the other stack is shown.