q3k2r/2p1n1b1/1p5p/1r4P1/p1PP2b1/P3PP1N/1P2BKP1/RNB4R w - - 0 20
FEN state: q3k2r/2p1n1b1/1p5p/1r4P1/p1PP2b1/P3PP1N/1P2BKP1/RNB4R w - - 0 20 ; Best move: c4b5
The current state of the chess board is: Black queen at a8, black king at e8 and black rook at h8. Black pawn at c7, black knight at e7 and black bishop at g7. Black pawn at b6 and black pawn at h6. Black rook at b5 and white pawn at g5. Black pawn at a4, white pawn at c4, white pawn at d4 and black bishop at g4. White pawn at a3, white pawn at e3, white pawn at f3 and white knight at h3. White pawn at b2, white bishop at e2, white king at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.