r1bqk2r/pp2p1bp/6Pn/2ppnp1R/1P1P2P1/2P1KP2/PB1QP3/RN3BN1 w - - 2 20
FEN state: r1bqk2r/pp2p1bp/6Pn/2ppnp1R/1P1P2P1/2P1KP2/PB1QP3/RN3BN1 w - - 2 20 ; Best move: d4e5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7, black bishop at g7 and black pawn at h7. White pawn at g6 and black knight at h6. Black pawn at c5, black pawn at d5, black knight at e5, black pawn at f5 and white rook at h5. White pawn at b4, white pawn at d4 and white pawn at g4. White pawn at c3, white king at e3 and white pawn at f3. White pawn at a2, white bishop at b2, white queen at d2 and white pawn at e2. White rook at a1, white knight at b1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. White to move.