rn3knr/2p2qp1/1p4b1/p3Ppp1/4PPPP/b1K5/1PP1N3/1RB4R w - - 0 21
FEN state: rn3knr/2p2qp1/1p4b1/p3Ppp1/4PPPP/b1K5/1PP1N3/1RB4R w - - 0 21 ; Best move: b2a3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at f8, black knight at g8 and black rook at h8. Black pawn at c7, black queen at f7 and black pawn at g7. Black pawn at b6 and black bishop at g6. Black pawn at a5, white pawn at e5, black pawn at f5 and black pawn at g5. White pawn at e4, white pawn at f4, white pawn at g4 and white pawn at h4. Black bishop at a3 and white king at c3. White pawn at b2, white pawn at c2 and white knight at e2. White rook at b1, white bishop at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.