MESON Chess Problem Database

Problem Display
PID: 202613 (8/3N4/7Q/4P2P/4k1B1/1KP5/8/8 w - - 0 1)

Kovacs, Florian Janos

Uj Nemezdek, 1923

8/3N4/7Q/4P2P/4k1B1/1KP5/8/8

#2

7 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sc5#
    • 1...Kd5
      • 2.Bf3#
  • Tries
    • 1.Kb4?
      • 1...Kd5
        • 2.Bf3#
      • 1...Kd3!
    • 1.Sc5+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxe5!
    • 1.Bd1?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5
        • 2.Bf3#
      • 1...Kf5!
    • 1.Be2?
      • 1...Kd5
        • 2.Bf3#
      • 1...Kf5!
    • 1.Bf3+?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf5
        • 2.Qf6#
      • 1...Kxf3!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qf3#
      • 1...Kxe3!
    • 1.Qf4+?
      • 1...Kd3
        • 2.Sc5#
        • 2.Qd4#
      • 1...Kd5
        • 2.Qf3#
        • 2.Qc4#
      • 1...Kxf4!
    • 1.Qg5?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5!
    • 1.Qb6?
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kd5
        • 2.Bf3#
        • 2.Qb7#
      • 1...Kf4!
    • 1.Qd6?
      • threat
        • 2.Qd4#
      • 1...Ke3
        • 2.Qd4#
      • 1...Kf4!
    • 1.e6?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5!
  • Keys
    • 1.Qc1!
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(G)
    • K(a);S_FLIGHT::B(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::S(G)
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);P-FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(F)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);P-FLIGHT::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);S_FLIGHT::QAB(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).