rnb1k1nr/1p1p4/p1p1B1p1/4qp1p/1b1PP2P/3QK1P1/PPP2P2/R1B3NR w - - 0 13
FEN state: rnb1k1nr/1p1p4/p1p1B1p1/4qp1p/1b1PP2P/3QK1P1/PPP2P2/R1B3NR w - - 0 13 ; Best move: d4e5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7 and black pawn at d7. Black pawn at a6, black pawn at c6, white bishop at e6 and black pawn at g6. Black queen at e5, black pawn at f5 and black pawn at h5. Black bishop at b4, white pawn at d4, white pawn at e4 and white pawn at h4. White queen at d3, white king at e3 and white pawn at g3. White pawn at a2, white pawn at b2, white pawn at c2 and white pawn at f2. White rook at a1, white bishop at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 13. White to move.