2r1k1nr/pbp3q1/n2p4/Pp2ppPp/1P2P1Q1/2RP2P1/2P1K1B1/1NB3NR w k - 5 20
FEN state: 2r1k1nr/pbp3q1/n2p4/Pp2ppPp/1P2P1Q1/2RP2P1/2P1K1B1/1NB3NR w k - 5 20 ; Best move: g4f5
The current state of the chess board is: Black rook at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at c7 and black queen at g7. Black knight at a6 and black pawn at d6. White pawn at a5, black pawn at b5, black pawn at e5, black pawn at f5, white pawn at g5 and black pawn at h5. White pawn at b4, white pawn at e4 and white queen at g4. White rook at c3, white pawn at d3 and white pawn at g3. White pawn at c2, white king at e2 and white bishop at g2. White knight at b1, white bishop at c1, 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.