rn2k2r/p1p1b3/1p2pp2/2P1n1p1/1P1P1P1p/P1Q2NP1/2b1B2P/RNB1K2R w KQkq - 0 20
FEN state: rn2k2r/p1p1b3/1p2pp2/2P1n1p1/1P1P1P1p/P1Q2NP1/2b1B2P/RNB1K2R w KQkq - 0 20 ; Best move: d4e5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7 and black bishop at e7. Black pawn at b6, black pawn at e6 and black pawn at f6. White pawn at c5, black knight at e5 and black pawn at g5. White pawn at b4, white pawn at d4, white pawn at f4 and black pawn at h4. White pawn at a3, white queen at c3, white knight at f3 and white pawn at g3. Black bishop at c2, white bishop at e2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 0. Full move number is 20. White to move.