rn1qkb2/p5p1/6Np/1p1p1b1n/1P1P4/2B1PRPP/P1P1K3/RN6 b q - 2 20
FEN state: rn1qkb2/p5p1/6Np/1p1p1b1n/1P1P4/2B1PRPP/P1P1K3/RN6 b q - 2 20 ; Best move: f5g6
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at a7 and black pawn at g7. White knight at g6 and black pawn at h6. Black pawn at b5, black pawn at d5, black bishop at f5 and black knight at h5. White pawn at b4 and white pawn at d4. White bishop at c3, white pawn at e3, white rook at f3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at c2 and white king at e2. White rook at a1 and white knight at b1. Black queenside is the only castle move available. Half move number is 2. Full move number is 20. Black to move.