1rb1kbnr/1p1p2p1/1q3p1p/p1p1p3/1nBPPPP1/2N4P/PPP5/1RBQ1KNR w k - 4 12
FEN state: 1rb1kbnr/1p1p2p1/1q3p1p/p1p1p3/1nBPPPP1/2N4P/PPP5/1RBQ1KNR w k - 4 12 ; Best move: d4e5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7 and black pawn at g7. Black queen at b6, black pawn at f6 and black pawn at h6. Black pawn at a5, black pawn at c5 and black pawn at e5. Black knight at b4, white bishop at c4, white pawn at d4, white pawn at e4, white pawn at f4 and white pawn at g4. White knight at c3 and white pawn at h3. White pawn at a2, white pawn at b2 and white pawn at c2. White rook at b1, white bishop at c1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 12. White to move.