4k2r/rbp2p2/3ppq2/p1Q2nPp/1n2P3/1BPR1N2/P1PP1PP1/1RB2K2 w - - 1 20
FEN state: 4k2r/rbp2p2/3ppq2/p1Q2nPp/1n2P3/1BPR1N2/P1PP1PP1/1RB2K2 w - - 1 20 ; Best move: b3a4
The current state of the chess board is: Black king at e8 and black rook at h8. Black rook at a7, black bishop at b7, black pawn at c7 and black pawn at f7. Black pawn at d6, black pawn at e6 and black queen at f6. Black pawn at a5, white queen at c5, black knight at f5, white pawn at g5 and black pawn at h5. Black knight at b4 and white pawn at e4. White bishop at b3, white pawn at c3, white rook at d3 and white knight at f3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at b1, white bishop at c1 and white king at f1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.