Game 4 – Optimistic evaluation

Game

Initial position
gadisr1660
Jdstderek20031654
Live Chess-
October 21, 2020Chess.com
1.e41…e52.Nf32…d63.Bc43…Bg44.O-O4…Nc65.c35…Qd76.Be26…O-O-O7.h37…Bh58.d48…Bg69.d59…Nce710.Bd310…Kb811.Na311…a612.Be312…f513.Qb313…Ka814.Nb514…fxe415.Nxd615…cxd616.Qb616…Nc817.Qa517…exd318.c418…Be819.a419…h620.b420…Kb821.b521…Qc722.Qb422…a523.Qc323…e424.Rab124…exf325.b625…Nxb626.Bxb626…Qd727.Qxa527…Qxa428.Ba7+28…Kc829.Qc329…Qxa730.Ra130…Qb831.Qxd331…fxg232.c532…gxf1=Q+33.Kxf133…Nf634.Rc134…dxc535.Qf5+35…Bd736.Qf336…Bd637.Qa337…Nxd538.Rxc5+38…Bxc539.Qxc5+39…Bc60–1
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Opening
Solid, nothing special.

Mistakes
1. 14. Nb5. In this phase, there is a threat fxe4 with fork losing a piece. I am offering to sac a knight and then mate in 3 (Qa3+, Qa7+, Qa3#). I didnt calculate what happens if my opponent will not take the byte, which obviously happend.
2. After that, I had another miss calculation hoping cxd6 followed by Qb6 (which happened), but I missed Nc8 to disolve the attack.

Points to take
1. Try to evaluate objectively as possible and dont rely on opponent to make mistakes.
2. Improve my calculations

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