2r1k1r1/pp1bqppp/n2p4/1p1Pp2P/R4P2/b1N1P3/1P1P2P1/1NBQKR2 w - - 6 18
FEN state: 2r1k1r1/pp1bqppp/n2p4/1p1Pp2P/R4P2/b1N1P3/1P1P2P1/1NBQKR2 w - - 6 18 ; Best move: a4a3
The current state of the chess board is: Black rook at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at b7, black bishop at d7, black queen at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at a6 and black pawn at d6. Black pawn at b5, white pawn at d5, black pawn at e5 and white pawn at h5. White rook at a4 and white pawn at f4. Black bishop at a3, white knight at c3 and white pawn at e3. White pawn at b2, white pawn at d2 and white pawn at g2. White knight at b1, white bishop at c1, white queen at d1, white king at e1 and white rook at f1. Both players have exhausted their castles. Half move number is 6. Full move number is 18. White to move.