rn3rk1/1bqp1npp/pp6/Q1p1pp2/2BP4/1P2P1bP/PBPN1PPN/2KR3R b - - 3 15
FEN state: rn3rk1/1bqp1npp/pp6/Q1p1pp2/2BP4/1P2P1bP/PBPN1PPN/2KR3R b - - 3 15 ; Best move: b6a5
The current state of the chess board is: Black rook at a8, black knight at b8, black rook at f8 and black king at g8. Black bishop at b7, black queen at c7, black pawn at d7, black knight at f7, black pawn at g7 and black pawn at h7. Black pawn at a6 and black pawn at b6. White queen at a5, black pawn at c5, black pawn at e5 and black pawn at f5. White bishop at c4 and white pawn at d4. White pawn at b3, white pawn at e3, black bishop at g3 and white pawn at h3. White pawn at a2, white bishop at b2, white pawn at c2, white knight at d2, white pawn at f2, white pawn at g2 and white knight at h2. White king at c1, white rook at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 15. Black to move.