MESON Chess Problem Database

Problem Display
PID: 242034 (8/8/BQ1N4/8/2pp4/2k5/8/3K4 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/BQ1N4/8/2pp4/2k5/8/3K4

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb3#
    • 1...d3
      • 2.Se4#
  • Tries
    • 1.Kc1?
      • 1...d3
        • 2.Se4#
        • 2.Qb2#
      • 1...Kd3!
    • 1.Sxc4?
      • 1...d3
        • 2.Qb2#
      • 1...Kd3!
    • 1.Sf5?
      • 1...Kd3
        • 2.Qxd4#
      • 1...d3!
    • 1.Bb7?
      • 1...d3
        • 2.Se4#
      • 1...Kd3!
    • 1.Bc8?
      • 1...d3
        • 2.Se4#
      • 1...Kd3!
    • 1.Qb2+?
      • 1...Kd3
        • 2.Qa3#
        • 2.Qd2#
        • 2.Qb3#
      • 1...Kxb2!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Qd2#
        • 2.Qa3#
        • 2.Qb3#
      • 1...Kxb4!
    • 1.Qb5?
      • 1...Kd3
        • 2.Qb3#
      • 1...d3!
    • 1.Qb7?
      • 1...Kd3
        • 2.Qf3#
        • 2.Qb3#
      • 1...d3!
    • 1.Qb8?
      • 1...Kd3
        • 2.Qb3#
      • 1...d3!
  • Keys
    • 1.Qb1!
      • 1...d3
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
    • P(c);SBLOCK::S(D)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • S(D);XP(b)
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Vars
        • P(c);SBLOCK::S(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • P(c);SBLOCK::S(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
      • Refutation
        • P(c);
  • Actual
    • Q(C);
    • Vars
      • P(c);::S(D)
HTML5 logo

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).