1r1qnb1r/pb1pk1p1/n2p1p2/1p6/Q1pPP3/2P1BPP1/PP5P/RN2KB1R b KQ - 3 15
FEN state: 1r1qnb1r/pb1pk1p1/n2p1p2/1p6/Q1pPP3/2P1BPP1/PP5P/RN2KB1R b KQ - 3 15 ; Best move: b5a4
The current state of the chess board is: Black rook at b8, black queen at d8, black knight at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at d7, black king at e7 and black pawn at g7. Black knight at a6, black pawn at d6 and black pawn at f6. Black pawn at b5. White queen at a4, black pawn at c4, white pawn at d4 and white pawn at e4. White pawn at c3, white bishop at e3, white pawn at f3 and white pawn at g3. White pawn at a2, white pawn at b2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 3. Full move number is 15. Black to move.