rnb1kbn1/5p2/3pp1pr/ppp2P2/4Q2p/NP2P2P/P2P1KPR/R1B2BN1 w q - 0 17
FEN state: rnb1kbn1/5p2/3pp1pr/ppp2P2/4Q2p/NP2P2P/P2P1KPR/R1B2BN1 w q - 0 17 ; Best move: e4a8
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 knight at g8. Black pawn at f7. Black pawn at d6, black pawn at e6, black pawn at g6 and black rook at h6. Black pawn at a5, black pawn at b5, black pawn at c5 and white pawn at f5. White queen at e4 and black pawn at h4. White knight at a3, white pawn at b3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at d2, white king at f2, white pawn at g2 and white rook at h2. White rook at a1, white bishop at c1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 0. Full move number is 17. White to move.