Entanglement chess

In the past, neighboring countries would line up their armies and engage each other in a nice, predictable conflict. Lately, though, the wars we have been fighting have been messy affairs with no clear boundaries. With that in mind, I rearranged the classic chess board to better reflect the occupation vs. insurgency nature of the warfare we have grown used to. I hereby present to you "entanglement chess":

Rule changes:

• Castling: the king (K) may swap places with the adjacent rook (R), provided neither piece has yet been moved. This is the only castling option.
• Pawns (P) cannot move two spaces on their first move.
• Pawns can move horizontally or vertically, but can still only attack diagonally.
• Pawns cannot be promoted.

Alternate game piece names:

• B - bishops or "air support"
• K - king or "commander"
• N - knights or "guerrilla fighters"
• P - pawns or "infantry"
• Q - queen or "special forces"
• R - rooks or "armored division"