MESON Chess Problem Database

Problem Display
PID: 70901 (1b5k/r2p3N/4ppQ1/p1pb4/8/K1p5/5R1q/1R1r4 w - - 0 1)

Peris Pardo, Julio

Probleemblad, 1948

1b5k/r2p3N/4ppQ1/p1pb4/8/K1p5/5R1q/1R1r4

#2

5 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Rxb8#
    • 1...Qh1
      • 2.Rxb8#
    • 1...Qxf2
      • 2.Rxb8#
    • 1...Qg2
      • 2.Rxb8#
    • 1...Qh3
      • 2.Rxb8#
    • 1...Qh4
      • 2.Rxb8#
    • 1...Qh5
      • 2.Rxb8#
    • 1...d6
      • 2.Rxb8#
  • Tries
    • 1.Sxf6?
      • threat
        • 2.Qg8#
      • 1...Qg1
        • 2.Rxb8#
        • 2.Qh7#
        • 2.Qh6#
      • 1...Qg3
        • 2.Qh7#
        • 2.Qh6#
      • 1...Qg2
        • 2.Rxb8#
        • 2.Qh7#
        • 2.Qh6#
      • 1...Qh7
        • 2.Qxh7#
      • 1...e5
        • 2.Rxh2#
      • 1...Rg1!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sf7#
      • 1...fxg5
        • 2.Rf8#
      • 1...Qh7
        • 2.Qxh7#
      • 1...e5
        • 2.Rxh2#
      • 1...d6
        • 2.Rxb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::R(A),XB(k)
    • Q(b);N_GUARD,XR(B)::R(A),XB(k)
    • P(j);S_CUTQ(b)::R(A),XB(k)
  • Tries
    • Try
      • S(E);XP(h)
      • Threat
        • QAR1(D)
      • Vars
        • Q(b);N_GUARD::QAR1(D),XQ(b)
        • P(g);S_CUTB(k)::R(B),XQ(b)
      • Refutation
        • R(a);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(h);OGATE,XS(E)::R(B)
      • Q(b);N_GUARD::QAR1(D),XQ(b)
      • P(g);S_CUTB(k)::R(B),XQ(b)
      • P(j);S_CUTQ(b)::R(A),XB(k)
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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).