The 2016 Chess Olympiad (the blunders)

[Event "Sparkassen Chess Meeting"]
[Site "Dortmund GER"]
[Date "2014.07.13"]
[EventDate "2014.07.12"]
[Round "2"]
[Result "1-0"]
[White "Fabiano Caruana"]
[Black "Ruslan Ponomariov"]
[ECO "C42"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3 Nxc3 6.dxc3 Be7 7.Be3 Nc6 8.Qd2 Be6 9.O-O-O Qd7 10.Kb1 Bf6 11.h3 h6 12.b3 a6 13.g4 O-O-O 14.Bg2 g5 15.Nd4 Nxd4 16.cxd4 d5 17.f4 gxf4 18.Bxf4 h5 19.g5 Bg7 20.Rde1 h4 21.Be5 Rdg8 22.Qf4 Qd8 23.Bf1 Kb8 24.Bd3 Bc8 25.Kb2 Bxe5 26.Rxe5 Rg7 27.a4 a5 28.Ka2 Ka7 29.Qd2 Kb8 30.Qf4 Ka7 31.Rhe1 Bxh3 32.Rh1 Bc8 33.Rxh4 Rxh4 34.Qxh4 b6 35.Qh6 Rg8 36.Qc6 Be6 37.g6 Rg7 38.gxf7 Bxf7 { Even material. White to move and drop a bombshell. } 9.Re7 { What in blazes?? Pono must have thought this was a time pressure blunder. } Qxe7 { Black cannot defend the c-pawn with ... Kb8, otherwise Ba6 and mate next move. } 40.Ba6 { What in blazes ???White is threatening mate on b7, but Black can just take the B, right?} Kxa6 41.Qa8 { Mate !! Wow. The rook sac got the Black queen off the back rank, the B sac walked the king away from the mating square and into the jaws of the a-pawn. } # 1-0

[Event "Open invite"]
[Site "http://www.redhotpawn.com"]
[Date "2011.12.01"]
[EndDate "2011.12.05"]
[Round "?"]
[White "spr840"]
[Black "kcrally"]
[WhiteRating "1590"]
[BlackRating "702"]
[WhiteElo "1590"]
[BlackElo "702"]
[Result "1-0"]
[GameId "8889551"]
1. e4 e5 2. Ng1f3 d6 3. d4 Bc8g4 4. h3 Bg4xf3 5. gxf3 exd4 6. Qd1xd4 Nb8c6 7. Qd4d1 Qd8d7 8. Nb1c3 O-O-O 9. Bc1e3 Kc8b8 10. Qd1d5 a6 11. O-O-O Ng8f6 12. Qd5b3 h5 13. Bf1xa6 Nc6a5 14. Qb3b4 Qd7c6 15. Ba6b5 d5 16. Be3a7 Kb8xa7 17. Qb4xa5 Qc6a6 18. Bb5xa6 b6 19. Qa5a4 Rd8a8 20. Qa4c6