MESON Chess Problem Database

Problem Display
PID: 57463 (8/8/8/3Q4/3N4/1RPkPR1K/r2n1B2/3N4 w - - 0 1)

Peris Pardo, Julio

Arbejder-Skak, 1952

8/8/8/3Q4/3N4/1RPkPR1K/r2n1B2/3N4

#2

9 + 3

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1953

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sb2#
    • 1...Rb2
      • 2.Sxb2#
    • 1...Ra3
      • 2.Sb2#
    • 1...Ra4
      • 2.Sb2#
    • 1...Ra5
      • 2.Sb2#
    • 1...Ra6
      • 2.Sb2#
    • 1...Ra7
      • 2.Sb2#
    • 1...Ra8
      • 2.Sb2#
  • Tries
    • 1.Qb5+?
      • 1...Ke4
        • 2.Rf4#
        • 2.Qf5#
      • 1...Sc4!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Rb4#
        • 2.Qb5#
      • 1...Se4!
  • Keys
    • 1.Be1!
      • threat
        • 2.Sf2#
      • 1...Sxb3
        • 2.e4#
      • 1...Sxf3
        • 2.c4#
      • 1...Sb1
        • 2.e4#
      • 1...Sf1
        • 2.c4#
      • 1...Sc4
        • 2.Qf5#
      • 1...Se4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD::S(A),XR(a)
  • Tries
    • Try
      • Q(I);CHECK
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(I);CHECK
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • B(B);
    • Threat
      • S(A)
    • Vars
      • S(b);N_GUARD,XR(C)::R(F)+P(E)
      • S(b);N_GUARD,XR(F)::R(C)+P(D)
      • S(b);N_GUARD::R(F)+P(E)
      • S(b);N_GUARD::R(C)+P(D)
      • S(b);N_GUARD,SBLOCK::QAB(I)
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).