4kb1r/3rqppp/b3p3/1BP2n2/p1Nn3P/2N1P1P1/PPPB1P2/R3K2R w k - 2 20
FEN state: 4kb1r/3rqppp/b3p3/1BP2n2/p1Nn3P/2N1P1P1/PPPB1P2/R3K2R w k - 2 20 ; Best move: e3d4
The current state of the chess board is: Black king at e8, black bishop at f8 and black rook at h8. Black rook at d7, black queen at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black bishop at a6 and black pawn at e6. White bishop at b5, white pawn at c5 and black knight at f5. Black pawn at a4, white knight at c4, black knight at d4 and white pawn at h4. White knight at c3, white pawn at e3 and white pawn at g3. White pawn at a2, white pawn at b2, white pawn at c2, white bishop at d2 and white pawn at f2. White rook at a1, white king at e1 and white rook at h1. Black kingside is the only castle move available. Half move number is 2. Full move number is 20. White to move.