4kbn1/B3pp1r/2n4p/ppPp3p/2Q1P3/P1KP2PN/1P3P1P/RN1b3R w - - 0 21
FEN state: 4kbn1/B3pp1r/2n4p/ppPp3p/2Q1P3/P1KP2PN/1P3P1P/RN1b3R w - - 0 21 ; Best move: c4b5
The current state of the chess board is: Black king at e8, black bishop at f8 and black knight at g8. White bishop at a7, black pawn at e7, black pawn at f7 and black rook at h7. Black knight at c6 and black pawn at h6. Black pawn at a5, black pawn at b5, white pawn at c5, black pawn at d5 and black pawn at h5. White queen at c4 and white pawn at e4. White pawn at a3, white king at c3, white pawn at d3, white pawn at g3 and white knight at h3. White pawn at b2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, black bishop at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.