1rb1q1nr/pppp1kb1/5p1p/P3p1p1/1n1P2PP/N4B1R/2P1PP2/R1BQK1N1 w Q - 0 12
FEN state: 1rb1q1nr/pppp1kb1/5p1p/P3p1p1/1n1P2PP/N4B1R/2P1PP2/R1BQK1N1 w Q - 0 12 ; Best move: d4e5
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black king at f7 and black bishop at g7. Black pawn at f6 and black pawn at h6. White pawn at a5, black pawn at e5 and black pawn at g5. Black knight at b4, white pawn at d4, white pawn at g4 and white pawn at h4. White knight at a3, white bishop at f3 and white rook at h3. White pawn at c2, white pawn at e2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 12. White to move.