MESON Chess Problem Database

Problem Display
PID: 205545 (1rk1K3/1r6/Q1P5/1N6/8/8/8/8 w - - 0 1)

de Savignac Castelet, G Arnaud

La Strategie, 1925

1rk1K3/1r6/Q1P5/1N6/8/8/8/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxb7#
  • Tries
    • 1.Sa3?
      • 1...Ra8
        • 2.Qxb7#
      • 1...Kc7+!
    • 1.Sc3?
      • 1...Ra8
        • 2.Qxb7#
      • 1...Kc7+!
    • 1.Sd4?
      • 1...Ra8
        • 2.Qxb7#
      • 1...Kc7+!
    • 1.Sc7?
      • 1...Ra8
        • 2.Qxb7#
      • 1...Kxc7+!
  • Keys
    • 1.c7!
      • 1...Ra8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::QAB1(B),XR(a)
  • Tries
    • Try
      • S(A);
      • Vars
        • R(b);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • K(c);CHECK,N_SPINR(a),P-FLIGHT
    • Try
      • S(A);
      • Vars
        • R(b);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • K(c);CHECK,N_SPINR(a),P-FLIGHT
    • Try
      • S(A);
      • Vars
        • R(b);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • K(c);CHECK,N_SPINR(a),P-FLIGHT
    • Try
      • S(A);
      • Vars
        • R(b);N_GUARD::QAB1(B),XR(a)
      • Refutation
        • K(c);CHECK,N_SPINR(a),P-FLIGHT,XS(A)
  • Actual
    • P(C);
    • Vars
      • R(b);::QAB(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).