r3k2r/p1qp2p1/npp4n/2b1pp1p/PP1P4/2Pb1PPP/1B1KQR2/RN3BN1 w q - 7 20
FEN state: r3k2r/p1qp2p1/npp4n/2b1pp1p/PP1P4/2Pb1PPP/1B1KQR2/RN3BN1 w q - 7 20 ; Best move: e2d3
The current state of the chess board is: Black rook at a8, black king at e8 and black rook at h8. Black pawn at a7, black queen at c7, black pawn at d7 and black pawn at g7. Black knight at a6, black pawn at b6, black pawn at c6 and black knight at h6. Black bishop at c5, black pawn at e5, black pawn at f5 and black pawn at h5. White pawn at a4, white pawn at b4 and white pawn at d4. White pawn at c3, black bishop at d3, white pawn at f3, white pawn at g3 and white pawn at h3. White bishop at b2, white king at d2, white queen at e2 and white rook at f2. White rook at a1, white knight at b1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 7. Full move number is 20. White to move.