In this post, we consider the Evan’s gambit.

1. e2e4, e7e5.

2. g1f3, b8c6.

3. f1c4, f8c5.

4. b2b4, c5b4. This surprise attack on the black bishop is the key move of the Evans gambit.

5. c2c3, b4c5.

In 1826 or 1827 the Welsh sea captain and inventor William Davies Evans was on shore leave in London. There he played against one of the world's leading players at the time, Alexander McDonnell. The concept of the Evans Gambit was introduced, although the actual move order in that first game was 1. e2e4 e7e5 2. g8f3 b8c6 3. f1c4 f8c5 4. b2b4.

While this game introduced the concept of b2b4, deflecting the black bishop into attack and allowing whites to gain a tempo for the conquest of the center, it was not exactly the Evans Gambit as we know it, since b2b4 was delayed by one move. It appears that it was also Captain Evans who first played the Evans Gambit proper, again against McDonnell.

For more info, see [3-6].

If you want to know how to play chess without any registrations, uploads, installations on any device connected to internet (including a mobile phone) then, see [1].

If you want to know how to earn some money/crypto by playing chess games online then, see [2].

References:

1. https://www.dynpass.online/tools/chess/start.html

2. https://www.publish0x.com/simple-solutions-to-complex-problems/a-simple-way-to-make-money-and-crypto-by-playing-chess-games-xdqxkdd

3. https://www.chess.com/blog/BoboTheFlyingSheep67/the-evans-gambit-a-complete-guide

4. https://www.youtube.com/watch?v=MJe6VdrRh9o

5. https://www.chesshistory.com/winter/extra/evansgambit.html

6. https://royalchessmall.com/blogs/blog/evans-gambit