rnbk1bn1/2q1p1p1/1p3p2/pBppP3/P2N3r/R1PP1pP1/1P1N4/2B1K1R1 w - - 4 21
FEN state: rnbk1bn1/2q1p1p1/1p3p2/pBppP3/P2N3r/R1PP1pP1/1P1N4/2B1K1R1 w - - 4 21 ; Best move: d2f3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, black bishop at f8 and black knight at g8. Black queen at c7, black pawn at e7 and black pawn at g7. Black pawn at b6 and black pawn at f6. Black pawn at a5, white bishop at b5, black pawn at c5, black pawn at d5 and white pawn at e5. White pawn at a4, white knight at d4 and black rook at h4. White rook at a3, white pawn at c3, white pawn at d3, black pawn at f3 and white pawn at g3. White pawn at b2 and white knight at d2. White bishop at c1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. White to move.