Tic-Tac-Toe reimagined

Victory conditions:

The first player to reach the pentagon wins.

rule:

1. Two players take turns to draw patterns on the chessboard, and can only draw triangles.

2. When three identical figures are connected in a straight line, the last figure drawn will add an edge. (For example, a triangle will become a quadrilateral △+△+△=◻, and a quadrilateral will become a pentagon.)

3. The first player to reach the pentagon wins.

4. The basic checkerboard is 5x5. When the checkerboard is filled, the checkerboard will expand outward in one circle, and so on. (For example, 5x5 will be expanded into 7x7, and then filled into 9x9)

 

Advanced rules - "cutting":

1. Players can place 8 inverted triangles and 4 diamond-shaped blocks to "cut" the opponent's shape.

"Cut": When a player uses two inverted triangles or rhombuses to sandwich the opponent's corresponding square in the middle, the opponent's figure will lose one side. (For example, a clamped quadrilateral will turn into a triangle, and a clamped triangle will disappear directly.)

2. Triangles can only be "cut" using inverted triangles, and quadrilaterals can only be "cut" using rhombuses.

3. Only one figure can be sandwiched between two inverted triangles or rhombuses, otherwise it cannot be "cut": ◇+■+◇=▲