rn1q1b1r/1bpp1k1p/p2p1P2/8/1p1N1ppP/4P3/PPPP1P2/R1BQKBR1 w Q - 0 13
FEN state: rn1q1b1r/1bpp1k1p/p2p1P2/8/1p1N1ppP/4P3/PPPP1P2/R1BQKBR1 w Q - 0 13 ; Best move: g1g4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black bishop at f8 and black rook at h8. Black bishop at b7, black pawn at c7, black pawn at d7, black king at f7 and black pawn at h7. Black pawn at a6, black pawn at d6 and white pawn at f6. Black pawn at b4, white knight at d4, black pawn at f4, black pawn at g4 and white pawn at h4. White pawn at e3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 13. White to move.