Abstract: Disclosed is an instant messenger server and method for supporting on-line game, and storage medium having an instant messenger program source thereof. The instant messenger server supports for transferring messages between a player and an opponent player by a request from the main player logged in when an instant messenger program is loaded on a player's computer and the instant messenger program is executed. The instant messenger server includes at least one on-line game content, and supports for the on-line game to be executed automatically, and for the main player logged in to play the on-line game with the opponent player when the main player logged in retrieves opponent players to play with the on-line game, proposes opponent player matching with retrieved condition to play the on-line game, and receives an approval signal from the opponent player.

Abstract: Disclosed is a cutting insert capable of enhancing the surface roughness of worked materials and lengthening the durability of a cutting tool which has utilized in conjunction with the cutting insert, capable of efficiently removing cut chips from the cutting region by making a chip breaker into a complete free curved surface to discharge the cut chips in the most natural direction and form, which are formed when performing a desired cutting operation of ferrous or nonferrous metals such as aluminum, copper, stainless, etc., to also minimize the resistance to chip flow and the occurrence of the melted-sticking phenomenon. The cutting insert has a specific chip breaker formed on an upper surface thereof with the aid of a pressure molding operation using a mold and in a sintering operation. A lower surface of the cutting insert is formed as a plane. The lower surface is firmly fixed on a holder for cutting tool and supports the cutting insert when mounting the cutting insert in the holder for cutting tool.