1r3b1r/pp2p2p/nq4p1/1kp1P3/4NNb1/P3n1P1/1PPPKP1P/R1B4R w - - 0 20
FEN state: 1r3b1r/pp2p2p/nq4p1/1kp1P3/4NNb1/P3n1P1/1PPPKP1P/R1B4R w - - 0 20 ; Best move: e2e3
The current state of the chess board is: Black rook at b8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7 and black pawn at h7. Black knight at a6, black queen at b6 and black pawn at g6. Black king at b5, black pawn at c5 and white pawn at e5. White knight at e4, white knight at f4 and black bishop at g4. White pawn at a3, black knight at e3 and white pawn at g3. White pawn at b2, white pawn at c2, white pawn at d2, white king at e2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.