rk3bnr/p3p1p1/n1b4p/Bp1PP1P1/3p1P2/N4P2/PP2B1R1/1R1QK1N1 w - - 1 21
FEN state: rk3bnr/p3p1p1/n1b4p/Bp1PP1P1/3p1P2/N4P2/PP2B1R1/1R1QK1N1 w - - 1 21 ; Best move: d5c6
The current state of the chess board is: Black rook at a8, black king at b8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at e7 and black pawn at g7. Black knight at a6, black bishop at c6 and black pawn at h6. White bishop at a5, black pawn at b5, white pawn at d5, white pawn at e5 and white pawn at g5. Black pawn at d4 and white pawn at f4. White knight at a3 and white pawn at f3. White pawn at a2, white pawn at b2, white bishop at e2 and white rook at g2. White rook at b1, white queen at d1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.