r1bq1bnr/1p1n1kp1/2pp4/p3pN1p/1P6/2N3P1/P1PPPPBP/R1BQK1R1 w Q - 1 11
FEN state: r1bq1bnr/1p1n1kp1/2pp4/p3pN1p/1P6/2N3P1/P1PPPPBP/R1BQK1R1 w Q - 1 11 ; Best move: b4b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black knight at d7, black king at f7 and black pawn at g7. Black pawn at c6 and black pawn at d6. Black pawn at a5, black pawn at e5, white knight at f5 and black pawn at h5. White pawn at b4. White knight at c3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 11. White to move.