4kb1r/rq2pnp1/pp3p2/1Pn4p/3Q2b1/P3PPN1/2P1K1PP/R1B2BNR w k - 5 20
FEN state: 4kb1r/rq2pnp1/pp3p2/1Pn4p/3Q2b1/P3PPN1/2P1K1PP/R1B2BNR w k - 5 20 ; Best move: f3g4
The current state of the chess board is: Black king at e8, black bishop at f8 and black rook at h8. Black rook at a7, black queen at b7, black pawn at e7, black knight at f7 and black pawn at g7. Black pawn at a6, black pawn at b6 and black pawn at f6. White pawn at b5, black knight at c5 and black pawn at h5. White queen at d4 and black bishop at g4. White pawn at a3, white pawn at e3, white pawn at f3 and white knight at g3. White pawn at c2, white king at e2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 5. Full move number is 20. White to move.