rn2r3/pb1p1p2/1p2p1p1/1Npk3p/3P1Pn1/1P4P1/P1P1P1NP/R1K2B1R w - - 0 20
FEN state: rn2r3/pb1p1p2/1p2p1p1/1Npk3p/3P1Pn1/1P4P1/P1P1P1NP/R1K2B1R w - - 0 20 ; Best move: e2e4
The current state of the chess board is: Black rook at a8, black knight at b8 and black rook at e8. Black pawn at a7, black bishop at b7, black pawn at d7 and black pawn at f7. Black pawn at b6, black pawn at e6 and black pawn at g6. White knight at b5, black pawn at c5, black king at d5 and black pawn at h5. White pawn at d4, white pawn at f4 and black knight at g4. White pawn at b3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at e2, white knight at g2 and white pawn at h2. White rook at a1, white king at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.