King's Gambit Accepted: Kieseritzky, Polerio Defense
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7
The King's Gambit Accepted: Kieseritzky, Polerio Defense is a chess opening classified as ECO C39, reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7. It is a line of the King's Gambit Accepted. White is to move.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 42 times by this move order. White won 57%, 0% were drawn and Black won 43%. The most popular continuation is 6. Qxg4 (36% of games).
Engine evaluation: +0.81 (Stockfish, depth 30; best line 6. Bc4 Nh6 7. d4 d6 8. Nd3 f3)
- ECO
- C39
- Moves
- 10 plies
- FEN
rnbqk1nr/ppppbp1p/8/4N3/4PppP/8/PPPP2P1/RNBQKB1R w KQkq - 2 6- PGN
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 0-1499 | 1 | |
| 1500-1999 | 33 | |
| 2000+ | 8 | |
| All | 42 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 6. Qxg4 | 15 (36%) | |
| 6. Nxg4 | 13 (31%) | |
| 6. Bc4 | 12 (29%) | |
| 6. d4 | 2 (5%) |
Master games
1 over-the-board game is classified under this line (White 100%, draw 0%, Black 0%). The strongest:
- GM Alexandr Fier (2557) – WFM Nivedita V C (1991) 1-0 · 1st 3-0 Thu 23rd Jul 2026 · 2026-07-23
Search all games of the King's Gambit Accepted: Kieseritzky, Polerio Defense and its sub-variations
Highest-rated Lichess games
- Dynamovec (2522) – dashazubricheva (2060) 1-0 · 2026-09-06 · 180 + 0s
- Dynamovec (2524) – dashazubricheva (2026) 1-0 · 2026-09-06 · 180 + 0s
- GalyaevA (2265) – dashazubricheva (2031) 1-0 · 2026-09-06 · 180 + 0s
Comes from
King's Gambit Accepted: Kieseritzky Gambit 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5
More King's Gambit Accepted lines (all)
- King's Gambit Accepted C33
- King's Gambit Accepted: Basman Gambit C33
- King's Gambit Accepted: Bishop's Gambit C33
- King's Gambit Accepted: Bishop's Gambit, Anderssen Defense C33
- King's Gambit Accepted: Bishop's Gambit, Anderssen Variation C33
- King's Gambit Accepted: Bishop's Gambit, Bledow Countergambit C33
- King's Gambit Accepted: Bishop's Gambit, Bledow Variation C33
- King's Gambit Accepted: Bishop's Gambit, Boden Variation C33
- King's Gambit Accepted: Bishop's Gambit, Bogoljubow Defense C33
- King's Gambit Accepted: Bishop's Gambit, Bogoljubow Variation C33
- King's Gambit Accepted: Bishop's Gambit, Boren-Svenonius Variation C33
- King's Gambit Accepted: Bishop's Gambit, Bryan Countergambit C33
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.