r1nk2nr/1q1p1ppp/pp2p2Q/1N6/1b3P2/P2P1b2/1RP1P1PP/2B1KB1R w - - 2 17
FEN state: r1nk2nr/1q1p1ppp/pp2p2Q/1N6/1b3P2/P2P1b2/1RP1P1PP/2B1KB1R w - - 2 17 ; Best move: b2b4
The current state of the chess board is: Black rook at a8, black knight at c8, black king at d8, black knight at g8 and black rook at h8. Black queen at b7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at b6, black pawn at e6 and white queen at h6. White knight at b5. Black bishop at b4 and white pawn at f4. White pawn at a3, white pawn at d3 and black bishop at f3. White rook at b2, white pawn at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 17. White to move.