rnb2k1r/p1q2pp1/2p1n3/3pp3/2pP3p/1P2P2P/PB4PK/RN1Q1BNR w - - 0 18
FEN state: rnb2k1r/p1q2pp1/2p1n3/3pp3/2pP3p/1P2P2P/PB4PK/RN1Q1BNR w - - 0 18 ; Best move: d4e5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at a7, black queen at c7, black pawn at f7 and black pawn at g7. Black pawn at c6 and black knight at e6. Black pawn at d5 and black pawn at e5. Black pawn at c4, white pawn at d4 and black pawn at h4. White pawn at b3, white pawn at e3 and white pawn at h3. White pawn at a2, white bishop at b2, white pawn at g2 and white king at h2. White rook at a1, white knight at b1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. White to move.