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Analysis: erivera90 vs S0ra0_0

Date: 2026.03.07 | Event: Live Chess | Site: Chess.com

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Evaluation

Your moves Opponent moves

Found 4 crucial moments (2 blunders, 2 missed opportunitys).

Moment 1 — Blunder CRITICAL ↗

Positional

FEN: r1bqkb1r/1ppp2pp/p1n2p1n/6N1/2BpP3/8/PPP2PPP/RNBQ1RK1 w kq - 0 7

You Played: Nf7
Engine Best: Nf3
Eval Swing: -512 cp
Variation: Nf3 Nf7 Nxd4 Nxd4

CRITICAL: Your move allowed the opponent to immediately capture your White Knight on f7.

Refutation: Nxf7 c3 d3 Be3

Coach Explanation

BLUNDER: You hung your Knight. The opponent can simply take it with Nxf7. Nf3 is superior because it develops a piece to a safe square and the best line leads to Nxd4.

Moment 2 — Missed Mate CRITICAL ↗

Missed Back-Rank Mate

FEN: r1b1kb1r/1pp3qp/p1np2p1/3Q4/4N3/2P5/P4PPP/R1B1R1K1 w - - 1 17

You Played: Ng5+
You Could Have Played: Nf6+
Eval Swing: -10393 cp
Variation: Nf6+ Kd8 Re8#

You could have played: Nf6+ Kd8 Re8#

Coach Explanation

You had a chance to play Nf6+, forcing a checkmate. The Black king would be forced to Kd8, after which Re8# delivers checkmate.

Moment 3 — Missed Mate CRITICAL ↗

Missed Forced Mate

FEN: r1b2b1r/1ppk1Nqp/p1np2p1/3Q4/8/2P5/P4PPP/R1B1R1K1 w - - 5 19

You Played: Nxh8
You Could Have Played: Qe6#
Eval Swing: -9909 cp
Variation: Qe6#

You could have played: Qe6#

Coach Explanation

You had a chance to deliver checkmate with Qe6#. This brilliant move would have ended the game immediately.

Moment 4 — Blunder CRITICAL ↗

Back-Rank Mate

FEN: r3Q2N/1ppb3p/p1kp2p1/8/8/2q5/P4PPP/R1B1R1K1 w - - 3 25

You Played: Qxa8
Engine Best: Qe2
Eval Swing: -10637 cp
Variation: Qe2 Bg4 Qe4+ d5

CRITICAL: Your move allowed the opponent to immediately capture your White Rook on e1.

Refutation: Qxe1#

Coach Explanation

BLUNDER: You hung your Rook. The opponent can simply take it with Qxe1#. After Qxa8, Qxe1# is checkmate. Qe2 prevents this back rank mate.

Recurring Patterns

The most prominent recurring error is connected to missed tactical opportunities, specifically failing to capitalize on Hanging Pawns. However, this game stands out due to the critical errors involving Hanging Pieces (Knight, Rook) and missed Forced Mate opportunities. Although hanging pieces is one of the most common mistake types, it's rare to see two in a single game. The missed forced mates represent a concerning trend, as capitalizing on those opportunities could drastically alter game outcomes.

Annotated PGN

Copy this PGN to paste into Lichess, ChessBase, or any analysis tool.

        
        [Event "Live Chess"]
[Site "Chess.com"]
[Date "2026.03.07"]
[White "erivera90"]
[Black "S0ra0_0"]
[Result "0-1"]

1. e4 {+0.36} e5 {+0.30} 2. Nf3 {+0.25} Nc6 {+0.28} 3. d4 {+0.28} exd4 {+0.35}
4. Bc4 {-0.17} a6 {+0.71} 5. Ng5 {+0.11} Nh6 {+0.28} 6. O-O {+0.08} f6 {+0.78}
7. Nf7 $4 {-4.15 Positional · Nxf7} Nxf7 {-4.39} 8. Bxf7+ {-4.91} Kxf7 {-4.23}
9. Qh5+ {-4.74} g6 {-4.66} 10. Qd5+ {-4.74} Ke8 {-4.62} 11. e5 {-4.92} fxe5
{-4.65} 12. Re1 {-5.89} d6 {-5.92} 13. c3 {-5.77} dxc3 {-5.40} 14. bxc3 {-6.02}
Qf6 {-5.80} 15. Nd2 {-6.30} e4 {+3.45} 16. Nxe4 {+3.78} Qg7 {#2} 17. Ng5+ $4
{-3.93 Missed Mate in ? · best: Nf6+} Kd8 {+6.27} 18. Nf7+ {+6.71} Kd7 {#1} 19.
Nxh8 $4 {+0.91 Missed Mate in ? · best: Qe6#} Qxc3 {#2} 20. Qf7+ {+5.80} Kd8
{#1} 21. Qxf8+ {#1} Kd7 {#1} 22. Qf7+ {#7} Ne7 {#7} 23. Qxe7+ {+8.84} Kc6
{+10.11} 24. Qe8+ {+6.30} Bd7 {+6.41} 25. Qxa8 $4 {#-1 Back-Rank Mate · Qxe1#}
Qxe1# {#-0} 0-1
    