MESON Chess Problem Database

Problem Display
PID: 232145 (B1R3K1/1r1p3Q/3p4/1p6/3kPpN1/1P1N3r/2P3R1/8 w - - 0 1)

Einat, Paz

Zadachi i Etyudi, 2001

B1R3K1/1r1p3Q/3p4/1p6/3kPpN1/1P1N3r/2P3R1/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qg7#
    • 1...Ra7
      • 2.Qg7#
    • 1...Rc7
      • 2.Qg7#
    • 1...Rb8
      • 2.Qg7#
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Sdf2?
      • threat
        • 2.Qg7#
      • 1...Rxh7
        • 2.c3#
      • 1...Rh5
        • 2.c3#
      • 1...Rh6
        • 2.c3#
      • 1...Rc7!
  • Keys
    • 1.Rd2!
      • threat
        • 2.c3#
      • 1...Rxh7
        • 2.Sdf2#
      • 1...Rc7
        • 2.Qg7#
      • 1...b4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(f);::QAB(G)
    • R(f);P_PINR(I)::QAB(G)
    • P(d);N_GUARD::R1(I)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB(G)
      • Vars
        • R(a);N_GUARD,XQ(G)::P(A)
        • R(a);N_GUARD::P(A)
      • Refutation
        • R(f);
  • Actual
    • R(B);
    • Threat
      • P(A)
    • Vars
      • R(a);N_GUARD,XQ(G)::R(B)+S(D)
      • R(f);::QAB(G)
      • P(d);N_GUARD::R1(I)
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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).