rnb1kbr1/p2p2pp/2p2pq1/1p5n/4p3/P2PPP1B/1P2NK1P/R1B1Q1NR w q - 2 15
FEN state: rnb1kbr1/p2p2pp/2p2pq1/1p5n/4p3/P2PPP1B/1P2NK1P/R1B1Q1NR w q - 2 15 ; Best move: d3e4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at d7, black pawn at g7 and black pawn at h7. Black pawn at c6, black pawn at f6 and black queen at g6. Black pawn at b5 and black knight at h5. Black pawn at e4. White pawn at a3, white pawn at d3, white pawn at e3, white pawn at f3 and white bishop at h3. White pawn at b2, white knight at e2, white king at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at e1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 15. White to move.