has shown that it arises quite naturally as the combination of Rossolimo attack, Sicilian: Kronberger variation and of the Sodium (Durkin's) attack as well. The Rossolimo's move order:
It's a good gambit. The Explorer at d=20 prefered to play 5...a6 instead of taking the pawn e4.
An Explorer test game here
https://www.chess.com/forum/view/chess-openings/first-guide-to-the-sodium-attack
has shown that it arises quite naturally as the combination of Rossolimo attack, Sicilian: Kronberger variation and of the Sodium (Durkin's) attack as well. The Rossolimo's move order:
It's a good gambit. The Explorer at d=20 prefered to play 5...a6 instead of taking the pawn e4.