User:Madladn/sandbox

The Madladn G-Sling (mislabeled the G-Slag by Dina Belenkaya's editor) is an unconventional chess opening in which White begins by moving the king's knight's pawn two squares and then moving:
 * 1. g4
 * 2. g5

History and usage
The opening takes its name from the g-file where the sacrificial pawn used in the system starts and the Twitch Streamer Madladn (1986–?) who analyzed it extensively and played hundreds of bullet and blitz games on lichess.org with it. Madladn took his inspiration for the opening from a Scandinavian Defense line where White plays 4.b4 as a response to 3...Qa5. In bullet, players often played the next traditional move in the line and lost their queen the following move.

Along with several other uncommon first moves for White (and since it starts off as a Grob's Attack or Borg Opening, the G-Sling should be classified under the code A00 ("irregular openings" or "uncommon openings") in the Encyclopedia of Chess Openings. White has three main plans: to gambit the g5 pawn with developing attacks against the queen while trading edge pawns for central pawns ; advance the pawn further to g6 to attack f7, specifically if Black plays h6; or advancing the h-pawn in a attack.

The G-Sling (along with the Grob/Borg) is generally considered inferior and is rarely employed in serious competition.

Black is not obliged to give White these opportunities. Simply playing strong developing moves or obstructing the advance of the g-pawn is sufficient to undermine the effectiveness of this opening.

Named variations

 * G-Sling Happy Line as White, 1.g4 d5 2.g5 e5 3.c3 Qxg5 4.d4 Qf6 5.dxe5 Qxe5 6.Nf3 Qh5 7.Rg1 Nf6 8.Rg5
 * G-Sling Advanced as White: 1.g4 d5 2.g5 e5 3.c3 h6 4.g6
 * G-Sling Happy Line as Black: 1.e4 g5 2.d4 g4 3.Qxg4 d5 4.Qf3 dxe4 5.Qxe4 Nf6 6.Qh4 Rg8 7.Nf3 8.Rg4
 * G-Sling Advanced as Black: 1.e4 g5 2.d4 g4 3.Qxg4 d5 4.