rnb4b/pp2pk1p/P1p2p2/3pq1rp/4P1n1/R2P1P1P/1PPQK1B1/1NB4R w - - 3 21
FEN state: rnb4b/pp2pk1p/P1p2p2/3pq1rp/4P1n1/R2P1P1P/1PPQK1B1/1NB4R w - - 3 21 ; Best move: f3f4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black bishop at h8. Black pawn at a7, black pawn at b7, black pawn at e7, black king at f7 and black pawn at h7. White pawn at a6, black pawn at c6 and black pawn at f6. Black pawn at d5, black queen at e5, black rook at g5 and black pawn at h5. White pawn at e4 and black knight at g4. White rook at a3, white pawn at d3, white pawn at f3 and white pawn at h3. White pawn at b2, white pawn at c2, white queen at d2, white king at e2 and white bishop at g2. White knight at b1, white bishop at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. White to move.