1r2kb2/1p2ppr1/p3bn2/3P2pp/Pq1pP1n1/3P1K1P/1B3P2/RN3BNR w - - 2 21
FEN state: 1r2kb2/1p2ppr1/p3bn2/3P2pp/Pq1pP1n1/3P1K1P/1B3P2/RN3BNR w - - 2 21 ; Best move: d5e6
The current state of the chess board is: Black rook at b8, black king at e8 and black bishop at f8. Black pawn at b7, black pawn at e7, black pawn at f7 and black rook at g7. Black pawn at a6, black bishop at e6 and black knight at f6. White pawn at d5, black pawn at g5 and black pawn at h5. White pawn at a4, black queen at b4, black pawn at d4, white pawn at e4 and black knight at g4. White pawn at d3, white king at f3 and white pawn at h3. White bishop at b2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. White to move.