r1q3nr/p1p2p1p/k2N3b/3p2p1/PQ1P4/1P4P1/2PBPPBP/2KR2NR w - - 4 16
FEN state: r1q3nr/p1p2p1p/k2N3b/3p2p1/PQ1P4/1P4P1/2PBPPBP/2KR2NR w - - 4 16 ; Best move: b4a5
The current state of the chess board is: Black rook at a8, black queen at c8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at f7 and black pawn at h7. Black king at a6, white knight at d6 and black bishop at h6. Black pawn at d5 and black pawn at g5. White pawn at a4, white queen at b4 and white pawn at d4. White pawn at b3 and white pawn at g3. White pawn at c2, white bishop at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White king at c1, white rook at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 16. White to move.