rnbq1k1r/p1pp2p1/8/1Q1n3p/2P1pp1P/N3PPPR/PPKPN3/1RB2B2 w - - 4 20
FEN state: rnbq1k1r/p1pp2p1/8/1Q1n3p/2P1pp1P/N3PPPR/PPKPN3/1RB2B2 w - - 4 20 ; Best move: b5d5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black pawn at g7. White queen at b5, black knight at d5 and black pawn at h5. White pawn at c4, black pawn at e4, black pawn at f4 and white pawn at h4. White knight at a3, white pawn at e3, white pawn at f3, white pawn at g3 and white rook at h3. White pawn at a2, white pawn at b2, white king at c2, white pawn at d2 and white knight at e2. White rook at b1, white bishop at c1 and white bishop at f1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. White to move.