1r3b1r/2nq1p1p/pp2k3/P2pNnp1/RPpPP1P1/5K1b/2P2P1P/2BQ1BNR w - - 4 20
FEN state: 1r3b1r/2nq1p1p/pp2k3/P2pNnp1/RPpPP1P1/5K1b/2P2P1P/2BQ1BNR w - - 4 20 ; Best move: e4f5
The current state of the chess board is: Black rook at b8, black bishop at f8 and black rook at h8. Black knight at c7, black queen at d7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at b6 and black king at e6. White pawn at a5, black pawn at d5, white knight at e5, black knight at f5 and black pawn at g5. White rook at a4, white pawn at b4, black pawn at c4, white pawn at d4, white pawn at e4 and white pawn at g4. White king at f3 and black bishop at h3. White pawn at c2, white pawn at f2 and white pawn at h2. White bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. White to move.