r2n2nr/pp2p2p/1q3kpb/2Pp4/PPB1p3/B1P5/RQ2NPPP/1N1KR3 w - - 3 20
FEN state: r2n2nr/pp2p2p/1q3kpb/2Pp4/PPB1p3/B1P5/RQ2NPPP/1N1KR3 w - - 3 20 ; Best move: c5b6
The current state of the chess board is: Black rook at a8, black knight at d8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7 and black pawn at h7. Black queen at b6, black king at f6, black pawn at g6 and black bishop at h6. White pawn at c5 and black pawn at d5. White pawn at a4, white pawn at b4, white bishop at c4 and black pawn at e4. White bishop at a3 and white pawn at c3. White rook at a2, white queen at b2, white knight at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white king at d1 and white rook at e1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. White to move.