MESON Chess Problem Database

Problem Display
PID: 266497 (4R3/2p5/1pBBnrpp/1r3kP1/1p1pNP2/q3p1R1/6nN/5Q1K w - - 0 1)

Dyachuk, Vasyl Vasilovich

5th Prize, Problem-Forum, 2014

4R3/2p5/1pBBnrpp/1r3kP1/1p1pNP2/q3p1R1/6nN/5Q1K

#2

10 + 13

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qh3#
    • 1...Sh4
      • 2.Qh3#
    • 1...Sc5
      • 2.Re5#
    • 1...Sxg5
      • 2.Qxb5#
    • 1...Sg7
      • 2.Qxb5#
    • 1...Sd8
      • 2.Qxb5#
    • 1...Sf8
      • 2.Qxb5#
    • 1...cxd6
      • 2.Sxd6#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sxh6#
      • 1...hxg5
        • 2.Sh6#
      • 1...h5
        • 2.Sh6#
      • 1...Rd5!
    • 1.Rxg2?
      • threat
        • 2.Sg3#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...e2!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Sg3#
      • 1...Sgxf4
        • 2.Qh3#
      • 1...Sexf4
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • S(a);OGATE::QAB(A)
    • S(i);OGATE::R1(J)
    • S(i);N_GUARD,XP(G)::QAR(A),XR(f)
    • S(i);N_GUARD::QAR(A),XR(f)
    • P(m);XB(I)::S(E),XP(m)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C),XP(l)
      • Vars
        • P(l);XP(G)::S(C)
        • P(l);::S(C)
      • Refutation
        • R(f);
    • Try
      • R(D);XS(a)
      • Threat
        • S(E)
      • Vars
        • S(i);OGATE,P_SPINS(i),XP(F)::QAR1(A),XS(i)
      • Refutation
        • P(c);
  • Actual
    • R(D);
    • Threat
      • S(E)
    • Vars
      • S(a);OGATE,P_SPINS(a),XP(F)::QAB(A)
      • S(i);N_GUARD,P_SPINS(i),XP(F)::QAR(A),XR(f)
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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).