2r2knr/1bp1q1p1/pp5p/3p4/PbP3P1/1n2P3/NQ1PK1RP/R1B2B2 w - - 0 20
FEN state: 2r2knr/1bp1q1p1/pp5p/3p4/PbP3P1/1n2P3/NQ1PK1RP/R1B2B2 w - - 0 20 ; Best move: b2b3
The current state of the chess board is: Black rook at c8, black king at f8, black knight at g8 and black rook at h8. Black bishop at b7, black pawn at c7, black queen at e7 and black pawn at g7. Black pawn at a6, black pawn at b6 and black pawn at h6. Black pawn at d5. White pawn at a4, black bishop at b4, white pawn at c4 and white pawn at g4. Black knight at b3 and white pawn at e3. White knight at a2, white queen at b2, white pawn at d2, white king at e2, white rook at g2 and white pawn at h2. White rook at a1, white bishop at c1 and white bishop at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.