rnq2kr1/1b2bppp/2p1P2n/pp4P1/PQ1P3P/N4P2/1P2P2R/R1B1KBN1 w - - 2 18
FEN state: rnq2kr1/1b2bppp/2p1P2n/pp4P1/PQ1P3P/N4P2/1P2P2R/R1B1KBN1 w - - 2 18 ; Best move: b4b3
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at c8, black king at f8 and black rook at g8. Black bishop at b7, black bishop at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at c6, white pawn at e6 and black knight at h6. Black pawn at a5, black pawn at b5 and white pawn at g5. White pawn at a4, white queen at b4, white pawn at d4 and white pawn at h4. White knight at a3 and white pawn at f3. White pawn at b2, white pawn at e2 and white rook at h2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 18. White to move.