r1bqk1n1/p1pp1p1r/1p2pb1p/6p1/1P1n4/PNNPP2P/1BPK1PP1/R2Q1B1R w q - 2 12
FEN state: r1bqk1n1/p1pp1p1r/1p2pb1p/6p1/1P1n4/PNNPP2P/1BPK1PP1/R2Q1B1R w q - 2 12 ; Best move: b3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7 and black rook at h7. Black pawn at b6, black pawn at e6, black bishop at f6 and black pawn at h6. Black pawn at g5. White pawn at b4 and black knight at d4. White pawn at a3, white knight at b3, white knight at c3, white pawn at d3, white pawn at e3 and white pawn at h3. White bishop at b2, white pawn at c2, white king at d2, white pawn at f2 and white pawn at g2. White rook at a1, white queen at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 12. White to move.