MESON Chess Problem Database

Problem Display
PID: 238250 (8/KB6/1p5q/7b/p2B3r/2R4p/r2R1PPk/5Q2 w - - 0 1)

Murashev, Pavel Aleksandrovich

64 Shakhmatnoe obozrenie, 2017

8/KB6/1p5q/7b/p2B3r/2R4p/r2R1PPk/5Q2

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Rxh3#
    • 1...Re4
      • 2.Rxh3#
    • 1...Rf4
      • 2.Rxh3#
    • 1...Rg4
      • 2.Rxh3#
    • 1...hxg2
      • 2.Qxg2#
  • Tries
    • 1.Be5+?
      • 1...Rf4
        • 2.Rxh3#
      • 1...Qf4!
    • 1.Rd1?
      • threat
        • 2.Qg1#
        • 2.Qh1#
      • 1...hxg2
        • 2.Qxg2#
        • 2.Qg1#
      • 1...Bxd1!
    • 1.Rc1?
      • threat
        • 2.Qg1#
        • 2.Qh1#
      • 1...hxg2
        • 2.Qxg2#
      • 1...Bd1!
    • 1.f4?
      • threat
        • 2.Qg1#
      • 1...Ra1
        • 2.g4#
      • 1...Bf3!
  • Keys
    • 1.g4!
      • threat
        • 2.Qh1#
      • 1...Qc6
        • 2.Be5#
      • 1...Ra1
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD,XB(F)::R1(E),XP(c)
    • R(e);N_GUARD::R1(E),XP(c)
    • P(c);OGATE,XP(D)::QAR1(A),XP(c)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • R(e);P_SPINR(e)::R1(E),XP(c)
      • Refutation
        • Q(h);P_SPINQ(h)
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Refutation
        • B(f);XR(B)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,XP(D)::QAR1(A),XP(c)
      • Refutation
        • B(f);
    • Try
      • P(C);
      • Threat
        • QAB1(A)
      • Vars
        • R(a);N_GUARD::R(B)+P(D)
      • Refutation
        • B(f);
  • Actual
    • P(D);
    • Threat
      • QAR1(A)
    • Vars
      • Q(h);N_GUARD::B(F)
      • R(a);N_GUARD::R(B)+P(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).