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It's just copy-pasted from Wikipedia; chess also changed the time per move, let's stop dwelling on this topic and adapt to the generally accepted rules; everyone starts on equal footing.
After the introduction of time control, the limit was constantly reduced:
initially, in the late 19th century, it was 2 hours for every 20 moves;
in the first half of the 20th century, they often played with a control of 2 hours for the first 30 moves and 1 hour for every 15 moves thereafter;
by the second half of the 20th century, the limit was reduced to 2.5 hours for the first 40 moves and 1 hour for every 16 moves thereafter;
in the late 1980s, a control of 1.5 hours for the first 30 moves and 1 hour for every 30 moves thereafter was tested.
Currently, the standard limit for classical chess is 2 hours for 40 moves, then 1 hour for the next 20 moves, and another 30 minutes until the end of the game, or 2 hours for 40 moves, followed immediately by 30 minutes to 1 hour until the end of the game. Rapid chess Tournaments are held, where approximately 30 minutes are given for the entire game, and blitz Tournaments, in which the time is even more limited – from 5 to 15 minutes per game.
In recent years, tournaments often use a control with added time, for example, the "Fisher tournament control," which is a combination of a traditional time limit for a period and Fisher control. In this system, the game is divided into three stages:
100 minutes for 40 moves (unused time is added to the second period's limit);
50 minutes for 20 moves (unused time is added to the third period's limit);
10 minutes until the end of the game, using the Fisher system, where 30 seconds are automatically added to the player's time after each move.
After the introduction of time control, the limit was constantly reduced:
initially, in the late 19th century, it was 2 hours for every 20 moves;
in the first half of the 20th century, they often played with a control of 2 hours for the first 30 moves and 1 hour for every 15 moves thereafter;
by the second half of the 20th century, the limit was reduced to 2.5 hours for the first 40 moves and 1 hour for every 16 moves thereafter;
in the late 1980s, a control of 1.5 hours for the first 30 moves and 1 hour for every 30 moves thereafter was tested.
Currently, the standard limit for classical chess is 2 hours for 40 moves, then 1 hour for the next 20 moves, and another 30 minutes until the end of the game, or 2 hours for 40 moves, followed immediately by 30 minutes to 1 hour until the end of the game. Rapid chess Tournaments are held, where approximately 30 minutes are given for the entire game, and blitz Tournaments, in which the time is even more limited – from 5 to 15 minutes per game.
In recent years, tournaments often use a control with added time, for example, the "Fisher tournament control," which is a combination of a traditional time limit for a period and Fisher control. In this system, the game is divided into three stages:
100 minutes for 40 moves (unused time is added to the second period's limit);
50 minutes for 20 moves (unused time is added to the third period's limit);
10 minutes until the end of the game, using the Fisher system, where 30 seconds are automatically added to the player's time after each move.
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