1n2qbnr/2pb3p/p1k5/p2p1pp1/PP1P1pP1/4P2N/2P2P1P/R1BK2NR w - - 1 18
FEN state: 1n2qbnr/2pb3p/p1k5/p2p1pp1/PP1P1pP1/4P2N/2P2P1P/R1BK2NR w - - 1 18 ; Best move: b4b5
The current state of the chess board is: Black knight at b8, black queen at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at c7, black bishop at d7 and black pawn at h7. Black pawn at a6 and black king at c6. Black pawn at a5, black pawn at d5, black pawn at f5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at d4, black pawn at f4 and white pawn at g4. White pawn at e3 and white knight at h3. White pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white king at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 18. White to move.