r5nr/2qnpk1p/2p4b/pp2p1p1/QPP2pb1/P4PPN/1B1PN2P/1R2KBR1 b - - 0 18
FEN state: r5nr/2qnpk1p/2p4b/pp2p1p1/QPP2pb1/P4PPN/1B1PN2P/1R2KBR1 b - - 0 18 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black knight at g8 and black rook at h8. Black queen at c7, black knight at d7, black pawn at e7, black king at f7 and black pawn at h7. Black pawn at c6 and black bishop at h6. Black pawn at a5, black pawn at b5, black pawn at e5 and black pawn at g5. White queen at a4, white pawn at b4, white pawn at c4, black pawn at f4 and black bishop at g4. White pawn at a3, white pawn at f3, white pawn at g3 and white knight at h3. White bishop at b2, white pawn at d2, white knight at e2 and white pawn at h2. White rook at b1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. Black to move.