r4kn1/q1pp4/p1nb1ppp/1p1P4/4p2P/1PB2PP1/PNPQb3/R3KB1R w KQ - 0 23
FEN state: r4kn1/q1pp4/p1nb1ppp/1p1P4/4p2P/1PB2PP1/PNPQb3/R3KB1R w KQ - 0 23 ; Best move: e1e2
The current state of the chess board is: Black rook at a8, black king at f8 and black knight at g8. Black queen at a7, black pawn at c7 and black pawn at d7. Black pawn at a6, black knight at c6, black bishop at d6, black pawn at f6, black pawn at g6 and black pawn at h6. Black pawn at b5 and white pawn at d5. Black pawn at e4 and white pawn at h4. White pawn at b3, white bishop at c3, white pawn at f3 and white pawn at g3. White pawn at a2, white knight at b2, white pawn at c2, white queen at d2 and black bishop at e2. White rook at a1, 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 0. Full move number is 23. White to move.