MESON Chess Problem Database

Problem Display
PID: 227881 (7n/3K1n2/5k2/7B/2N4N/6Q1/8/8 w - - 0 1)

Bajtay, Jozsef

Uj Nemezdek, 1926

7n/3K1n2/5k2/7B/2N4N/6Q1/8/8

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se5+
      • 2.Qxe5#
    • 1...Sg5
      • 2.Qe5#
      • 2.Qc3#
    • 1...Sd6
      • 2.Qe5#
    • 1...Sh6
      • 2.Qe5#
    • 1...Sd8
      • 2.Qe5#
    • 1...Sg6
      • 2.Qxg6#
  • Tries
    • 1.Sf3?
      • 1...Se5+
        • 2.Qxe5#
      • 1...Sg5
        • 2.Qe5#
        • 2.Qxg5#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sd6
        • 2.Qe5#
        • 2.Qg5#
      • 1...Sh6
        • 2.Qe5#
        • 2.Qg5#
      • 1...Sd8
        • 2.Qe5#
        • 2.Qg5#
      • 1...Kf5!
    • 1.Bg6?
      • 1...Se5+
        • 2.Qxe5#
      • 1...Sxg6
        • 2.Qxg6#
      • 1...Sg5
        • 2.Qe5#
        • 2.Qc3#
      • 1...Sd6
        • 2.Qe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
      • 1...Kg7!
    • 1.Bxf7?
      • 1...Sxf7
        • 2.Qg6#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Kxf7!
    • 1.Qc3+?
      • 1...Se5+
        • 2.Qxe5#
      • 1...Kg5!
  • Keys
    • 1.Sg2!
      • 1...Se5+
        • 2.Qxe5#
      • 1...Kf5
        • 2.Qf4#
      • 1...Sg5
        • 2.Qe5#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sd6
        • 2.Qe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
    • S(b);N_GUARD::QAB1(A)
    • S(c);N_GUARD::QAR1(A),XS(c)
  • Tries
    • Try
      • S(C);
      • Vars
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
        • S(c);N_GUARD::QAR1(A),XS(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
        • S(c);OGATE,XB(D)::QAR1(A),XS(c)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);XS(b)
      • Vars
        • S(c);N_GUARD,XB(D)::QAR1(A)
        • S(c);N_GUARD::QAR1(A),XS(c)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);CHECK,N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
      • K(a);P-FLIGHT::QAR1(A)
      • S(b);N_GUARD::QAB1(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
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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).