MESON Chess Problem Database

Problem Display
PID: 231430 (k6K/1r6/1B1p4/3Q4/2P5/8/8/8 w - - 0 1)

Regos, Imre

Magyar Sakkvilag, 1927

k6K/1r6/1B1p4/3Q4/2P5/8/8/8

#2

4 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Qg8#
  • Tries
    • 1.Qg2?
      • 1...Kb8
        • 2.Qg8#
      • 1...d5!
    • 1.Qf3?
      • 1...Kb8
        • 2.Qf8#
      • 1...d5!
    • 1.Qe4?
      • 1...Kb8
        • 2.Qe8#
      • 1...d5!
    • 1.Qc6?
      • 1...Kb8
        • 2.Qe8#
      • 1...d5!
    • 1.Qa5+?
      • 1...Ra7
        • 2.Qxa7#
      • 1...Kb8!
    • 1.c5?
      • 1...Kb8
        • 2.Qg8#
      • 1...dxc5!
  • Keys
    • 1.Bc7!
      • 1...Ka7
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);N_SPINR(b),P-FLIGHT::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(a);N_SPINR(b)
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(a);N_SPINR(b)
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(a);N_SPINR(b)
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK,N_PINR(b)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(B),XR(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(A);
      • Vars
        • K(c);N_SPINR(b),P-FLIGHT::QAR(B)
      • Refutation
        • P(a);XP(A)
  • Actual
    • B(C);
    • Vars
      • K(c);N_SPINR(b),P-FLIGHT::QAR2(B)
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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).