br2k2r/2pqp2p/p3p3/p2p3n/3P4/2B3RP/2NPPPP1/4KBNR w Kk - 0 21
FEN state: br2k2r/2pqp2p/p3p3/p2p3n/3P4/2B3RP/2NPPPP1/4KBNR w Kk - 0 21 ; Best move: c2a3
The current state of the chess board is: Black bishop at a8, black rook at b8, black king at e8 and black rook at h8. Black pawn at c7, black queen at d7, black pawn at e7 and black pawn at h7. Black pawn at a6 and black pawn at e6. Black pawn at a5, black pawn at d5 and black knight at h5. White pawn at d4. White bishop at c3, white rook at g3 and white pawn at h3. White knight at c2, white pawn at d2, white pawn at e2, white pawn at f2 and white pawn at g2. White king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and black kingside castles are available. Half move number is 0. Full move number is 21. White to move.