MESON Chess Problem Database

Problem Display
PID: 268696 (b6r/3Q1pb1/2Bp1p2/3n1rp1/2K1k1Np/5p2/4p3/2B1RN2 w - - 0 1)

Slesarenko, Anatoly Vasilevich

64 Shakhmatnoe obozrenie, 2023

b6r/3Q1pb1/2Bp1p2/3n1rp1/2K1k1Np/5p2/4p3/2B1RN2

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Sd2#
    • 1...Re5
      • 2.Sf2#
    • 1...h3
      • 2.Sg3#
  • Tries
    • 1.Qe6+?
      • 1...Re5
        • 2.Sf2#
      • 1...fxe6!
    • 1.Qxd6?
      • threat
        • 2.Sd2#
        • 2.Sf2#
      • 1...Rf4
        • 2.Qxd5#
      • 1...f2
        • 2.Sd2#
      • 1...Re5!
  • Keys
    • 1.Sge3!
      • threat
        • 2.Qxf5#
      • 1...exf1Q+
        • 2.Sxf1#
      • 1...exf1B+
        • 2.Sxf1#
      • 1...Kf4
        • 2.Qxf5#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Rf4
        • 2.Qe7#
      • 1...Re5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);SBLOCK::S(C)
    • R(f);SBLOCK::S(E)
    • P(d);N_GUARD::S(C)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(f);P_SPINR(f)::S(E)
      • Refutation
        • P(j);XQ(G)
    • Try
      • Q(G);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);N_GUARD::QAB1(G),XS(e)
        • P(b);::S(C)
      • Refutation
        • R(f);
  • Actual
    • S(E);N_PINP(a)
    • Threat
      • QAB1(G),XR(f)
    • Vars
      • P(a);CHECK,XS(C)::R(B)+S(E),XQ(a)
      • P(a);CHECK,XS(C)::R(B)+S(E),XB(a)
      • K(c);N_SPINS(e),P-FLIGHT::QAR1(G),XR(f)
      • R(f);N_GUARD,SBLOCK::QAR(G)
      • R(f);OGATE,SBLOCK::QAR2(G)
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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).