r1bqk1nr/p3p1bp/2p3p1/1p1p1pN1/1nP2P2/P5P1/1P1PP1KP/R1BQ1BNR w kq - 0 10
FEN state: r1bqk1nr/p3p1bp/2p3p1/1p1p1pN1/1nP2P2/P5P1/1P1PP1KP/R1BQ1BNR w kq - 0 10 ; Best move: c4b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at e7, black bishop at g7 and black pawn at h7. Black pawn at c6 and black pawn at g6. Black pawn at b5, black pawn at d5, black pawn at f5 and white knight at g5. Black knight at b4, white pawn at c4 and white pawn at f4. White pawn at a3 and white pawn at g3. White pawn at b2, white pawn at d2, white pawn at e2, white king at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 10. White to move.