rn1k1b1r/p3p3/b1p2npp/3p1p2/p1N2B1P/3P1NP1/QP2PP1R/1R3K1B w - - 0 20
FEN state: rn1k1b1r/p3p3/b1p2npp/3p1p2/p1N2B1P/3P1NP1/QP2PP1R/1R3K1B w - - 0 20 ; Best move: c4e5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at a7 and black pawn at e7. Black bishop at a6, black pawn at c6, black knight at f6, black pawn at g6 and black pawn at h6. Black pawn at d5 and black pawn at f5. Black pawn at a4, white knight at c4, white bishop at f4 and white pawn at h4. White pawn at d3, white knight at f3 and white pawn at g3. White queen at a2, white pawn at b2, white pawn at e2, white pawn at f2 and white rook at h2. White rook at b1, white king at f1 and white bishop at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.