1r1q1br1/p1n1pknp/6p1/1P1p4/Pp4P1/1R1P4/1Q2PPbP/1NB1KB1R w K - 0 20
FEN state: 1r1q1br1/p1n1pknp/6p1/1P1p4/Pp4P1/1R1P4/1Q2PPbP/1NB1KB1R w K - 0 20 ; Best move: f1g2
The current state of the chess board is: Black rook at b8, black queen at d8, black bishop at f8 and black rook at g8. Black pawn at a7, black knight at c7, black pawn at e7, black king at f7, black knight at g7 and black pawn at h7. Black pawn at g6. White pawn at b5 and black pawn at d5. White pawn at a4, black pawn at b4 and white pawn at g4. White rook at b3 and white pawn at d3. White queen at b2, white pawn at e2, white pawn at f2, black bishop at g2 and white pawn at h2. White knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 20. White to move.