r2n2nr/pb2Bq1p/P1pk3b/1p1ppp2/1P1PP3/1R6/2P2PPP/3QKBNR b K - 2 20
FEN state: r2n2nr/pb2Bq1p/P1pk3b/1p1ppp2/1P1PP3/1R6/2P2PPP/3QKBNR b K - 2 20 ; Best move: g8e7
The current state of the chess board is: Black rook at a8, black knight at d8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at b7, white bishop at e7, black queen at f7 and black pawn at h7. White pawn at a6, black pawn at c6, black king at d6 and black bishop at h6. Black pawn at b5, black pawn at d5, black pawn at e5 and black pawn at f5. White pawn at b4, white pawn at d4 and white pawn at e4. White rook at b3. White pawn at c2, white pawn at f2, white pawn at g2 and white pawn at h2. White queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 20. Black to move.