1nb4r/r1p5/3k4/p4p1p/R3p3/2PP1PPP/1P2P3/1N2KBNR w - - 0 23
FEN state: 1nb4r/r1p5/3k4/p4p1p/R3p3/2PP1PPP/1P2P3/1N2KBNR w - - 0 23 ; Best move: f3e4
The current state of the chess board is: Black knight at b8, black bishop at c8 and black rook at h8. Black rook at a7 and black pawn at c7. Black king at d6. Black pawn at a5, black pawn at f5 and black pawn at h5. White rook at a4 and black pawn at e4. White pawn at c3, white pawn at d3, white pawn at f3, white pawn at g3 and white pawn at h3. White pawn at b2 and white pawn at e2. White knight at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. White to move.