Event #10 Fortress

This is an event that is part of a variant called event chess. More about event chess can be read here.

Event #10 Fortress

Condition: At least 1 pawn for each player

As a move, a pawn can move from any square to an empty square next to an allied king. A pawn can be put on the first rank this way. If a pawn reaches a promotion square this way, then the pawn will promote. Pawns on the first or second rank can move up to 2 squares forward regardless if they have previously moved or not.

The blue squares indicate the squares next to the king which any allied pawn can move to.

Example 1:

White plays pawn h2-f1

Example 2:

White plays g3-c8=Q+