r1b2k1r/pnp1qppp/4p3/1p1p4/1P1nPP2/1P1P3N/PR1Q2PP/2B1KB1R w K - 1 20
FEN state: r1b2k1r/pnp1qppp/4p3/1p1p4/1P1nPP2/1P1P3N/PR1Q2PP/2B1KB1R w K - 1 20 ; Best move: d2c3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at a7, black knight at b7, black pawn at c7, black queen at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at e6. Black pawn at b5 and black pawn at d5. White pawn at b4, black knight at d4, white pawn at e4 and white pawn at f4. White pawn at b3, white pawn at d3 and white knight at h3. White pawn at a2, white rook at b2, white queen at d2, white pawn at g2 and white pawn at h2. White bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 20. White to move.