rn1k3r/p1p2ppp/b2b1n2/P3p1N1/1Q2p3/5P2/1PPP2PR/RNB1KB2 b - - 5 13
FEN state: rn1k3r/p1p2ppp/b2b1n2/P3p1N1/1Q2p3/5P2/1PPP2PR/RNB1KB2 b - - 5 13 ; Best move: d6b4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at f7, black pawn at g7 and black pawn at h7. Black bishop at a6, black bishop at d6 and black knight at f6. White pawn at a5, black pawn at e5 and white knight at g5. White queen at b4 and black pawn at e4. White pawn at f3. White pawn at b2, white pawn at c2, white pawn at d2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 5. Full move number is 13. Black to move.