r1b1n2r/p2k4/2p5/1pn1b1pp/2PPpNP1/1q2P3/P3KP1P/R1B2BR1 w - - 0 20
FEN state: r1b1n2r/p2k4/2p5/1pn1b1pp/2PPpNP1/1q2P3/P3KP1P/R1B2BR1 w - - 0 20 ; Best move: a2b3
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at e8 and black rook at h8. Black pawn at a7 and black king at d7. Black pawn at c6. Black pawn at b5, black knight at c5, black bishop at e5, black pawn at g5 and black pawn at h5. White pawn at c4, white pawn at d4, black pawn at e4, white knight at f4 and white pawn at g4. Black queen at b3 and white pawn at e3. White pawn at a2, white king at e2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.