Experience the elegance of a classic board game with refined gameplay in this enjoyable software.

The game follows the rule where black makes the first move, and then the players alternate turns to place their pieces onto the empty intersections on the board. During the turn, the player must click on an empty spot on the board to place their piece within the given time limit.
The game introduces the concept of "qi" and "eye" to the players. The 4 empty intersections adjacent to a piece on the board are called "qi". If opponent pieces have started to enclose a group of pieces, the "qi" becomes an "eye", and the group needs to have at least 2 eyes to avoid being captured. However, if the number of eyes falls below 2, the group of pieces will be considered "dead" and will be captured at the end of the game.
To avoid repetition, players are not allowed to return to the position before their opponent's previous move. If a player believes no more meaningful moves can be made, they can click on the Pass button on the screen to skip their turn. If both players pass, the game ends, and the remaining dead pieces are removed from the board.
The game also calculates the score based on the area surrounded by pieces and the number of opponent pieces captured. Moreover, since the player who took the first move has an advantage, 6.5 points will be given to the other player when determining the final score.
In conclusion, this software provides an excellent platform to play the game of Go and allows players to experience the thrill of surrounding and capturing the most opponent pieces by making use of clever strategies.
Version 1.4.0: Added time limit