rn4n1/3pkp1r/pp2p2p/P1bP2p1/8/2N1B1P1/2PP1N1P/RQ2KB1R w KQ - 3 21
FEN state: rn4n1/3pkp1r/pp2p2p/P1bP2p1/8/2N1B1P1/2PP1N1P/RQ2KB1R w KQ - 3 21 ; Best move: e3c5
The current state of the chess board is: Black rook at a8, black knight at b8 and black knight at g8. Black pawn at d7, black king at e7, black pawn at f7 and black rook at h7. Black pawn at a6, black pawn at b6, black pawn at e6 and black pawn at h6. White pawn at a5, black bishop at c5, white pawn at d5 and black pawn at g5. White knight at c3, white bishop at e3 and white pawn at g3. White pawn at c2, white pawn at d2, white knight at f2 and white pawn at h2. White rook at a1, white queen at b1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 3. Full move number is 21. White to move.