rnb3nr/p2p1p2/1kp4p/qp6/1P3pP1/2b4B/2PPP1RP/RQ2K1N1 w - - 2 20
FEN state: rnb3nr/p2p1p2/1kp4p/qp6/1P3pP1/2b4B/2PPP1RP/RQ2K1N1 w - - 2 20 ; Best move: b4a5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at d7 and black pawn at f7. Black king at b6, black pawn at c6 and black pawn at h6. Black queen at a5 and black pawn at b5. White pawn at b4, black pawn at f4 and white pawn at g4. Black bishop at c3 and white bishop at h3. White pawn at c2, white pawn at d2, white pawn at e2, white rook at g2 and white pawn at h2. White rook at a1, white queen at b1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. White to move.