r2k2nr/2n1p1b1/1p1q2Bp/p1pp4/3PN3/BP4PP/P1P2P2/RN2K2R w KQ - 1 20
FEN state: r2k2nr/2n1p1b1/1p1q2Bp/p1pp4/3PN3/BP4PP/P1P2P2/RN2K2R w KQ - 1 20 ; Best move: e4d6
The current state of the chess board is: Black rook at a8, black king at d8, black knight at g8 and black rook at h8. Black knight at c7, black pawn at e7 and black bishop at g7. Black pawn at b6, black queen at d6, white bishop at g6 and black pawn at h6. Black pawn at a5, black pawn at c5 and black pawn at d5. White pawn at d4 and white knight at e4. White bishop at a3, white pawn at b3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at c2 and white pawn at f2. White rook at a1, white knight at b1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 1. Full move number is 20. White to move.