MESON Chess Problem Database

Problem Display
PID: 204259 (8/QR6/qp6/k7/8/NK6/8/8 w - - 0 1)

de Savignac Castelet, G Arnaud

L'Echiquier Marseillais, 1925

8/QR6/qp6/k7/8/NK6/8/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa7
      • 2.Rxa7#
    • 1...b5
      • 2.Rxb5#
  • Tries
    • 1.Kc3?
      • 1...Ka4
        • 2.Qxa6#
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Rc7?
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Rd7?
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Re7?
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Rf7?
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Rg7?
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Rh7?
      • 1...Qxa7
        • 2.Rxa7#
      • 1...b5!
    • 1.Rb8?
      • 1...b5
        • 2.Rxb5#
      • 1...Qxa7!
    • 1.Qa8?
      • 1...Qa7
        • 2.Rxa7#
        • 2.Qxa7#
      • 1...b5
        • 2.Rxb5#
      • 1...Qxa8!
  • Keys
    • 1.Rxb6!
      • 1...Qxa7
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
    • P(c);OGATE::R1(D),XP(c)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C),XQ(b)
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • Q(b);N_SPINQ(b),OGATE,XQ(C)::R(D),XQ(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • P(c);OGATE::R1(D),XP(c)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(C)
    • Try
      • Q(C);
      • Vars
        • P(c);OGATE::R1(D),XP(c)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(C)
  • Actual
    • R(D);XP(c)
    • Vars
      • Q(b);N_SPINQ(b),XQ(C)::S(A)
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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).