r1b1kb1r/1pqpnp1p/p1n5/2p1p1p1/1PPQ2P1/B7/P2PPPBP/RN2K1NR w KQkq - 4 10
FEN state: r1b1kb1r/1pqpnp1p/p1n5/2p1p1p1/1PPQ2P1/B7/P2PPPBP/RN2K1NR w KQkq - 4 10 ; Best move: d4c3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black queen at c7, black pawn at d7, black knight at e7, black pawn at f7 and black pawn at h7. Black pawn at a6 and black knight at c6. Black pawn at c5, black pawn at e5 and black pawn at g5. White pawn at b4, white pawn at c4, white queen at d4 and white pawn at g4. White bishop at a3. White pawn at a2, white pawn at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1, white knight at g1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 4. Full move number is 10. White to move.