1n1q1bnr/1pp1p1p1/2b2pk1/p2P3p/P3BPP1/1P5N/RBPPr2P/1N1Q1K1R b - - 4 15
FEN state: 1n1q1bnr/1pp1p1p1/2b2pk1/p2P3p/P3BPP1/1P5N/RBPPr2P/1N1Q1K1R b - - 4 15 ; Best move: e2e4
The current state of the chess board is: Black knight at b8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at e7 and black pawn at g7. Black bishop at c6, black pawn at f6 and black king at g6. Black pawn at a5, white pawn at d5 and black pawn at h5. White pawn at a4, white bishop at e4, white pawn at f4 and white pawn at g4. White pawn at b3 and white knight at h3. White rook at a2, white bishop at b2, white pawn at c2, white pawn at d2, black rook at e2 and white pawn at h2. White knight at b1, white queen at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 15. Black to move.