r1bq2nr/pppkb3/n2pp1p1/4P2p/PP3p2/2PP1N2/1B3PPP/RN1QKB1R w KQ - 1 10
FEN state: r1bq2nr/pppkb3/n2pp1p1/4P2p/PP3p2/2PP1N2/1B3PPP/RN1QKB1R w KQ - 1 10 ; Best move: b4b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black king at d7 and black bishop at e7. Black knight at a6, black pawn at d6, black pawn at e6 and black pawn at g6. White pawn at e5 and black pawn at h5. White pawn at a4, white pawn at b4 and black pawn at f4. White pawn at c3, white pawn at d3 and white knight at f3. White bishop at b2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 1. Full move number is 10. White to move.