rnb1r3/3q1k1p/p1p5/3ppPB1/2p3n1/b2P1P2/RP2NNPP/1Q2KBR1 b - - 6 20
FEN state: rnb1r3/3q1k1p/p1p5/3ppPB1/2p3n1/b2P1P2/RP2NNPP/1Q2KBR1 b - - 6 20 ; Best move: a3b4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at e8. Black queen at d7, black king at f7 and black pawn at h7. Black pawn at a6 and black pawn at c6. Black pawn at d5, black pawn at e5, white pawn at f5 and white bishop at g5. Black pawn at c4 and black knight at g4. Black bishop at a3, white pawn at d3 and white pawn at f3. White rook at a2, white pawn at b2, white knight at e2, white knight at f2, white pawn at g2 and white pawn at h2. White queen at b1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 6. Full move number is 20. Black to move.