r1b1nk1r/1p1p2p1/p1p2qp1/7P/Q7/b2PP3/PPP1P1BP/R1B2K1R w - - 4 20
FEN state: r1b1nk1r/1p1p2p1/p1p2qp1/7P/Q7/b2PP3/PPP1P1BP/R1B2K1R w - - 4 20 ; Best move: f1e1
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at e8, black king at f8 and black rook at h8. Black pawn at b7, black pawn at d7 and black pawn at g7. Black pawn at a6, black pawn at c6, black queen at f6 and black pawn at g6. White pawn at h5. White queen at a4. Black bishop at a3, white pawn at d3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at e2, white bishop at g2 and white pawn at h2. White rook at a1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. White to move.