MESON Chess Problem Database

Problem Display
PID: 197110 (3b2KB/3n1Q2/2pP1rp1/1pp5/r2k1P2/1p3B2/1N1p2p1/1n1N4 w - - 0 1)

Dyachuk, Vasyl Vasilovich

2nd Prize, StrateGems, 2018

3b2KB/3n1Q2/2pP1rp1/1pp5/r2k1P2/1p3B2/1N1p2p1/1n1N4

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Qxb3?
      • threat
        • 2.Qd3#
        • 2.Qe3#
      • 1...c4
        • 2.Qe3#
      • 1...g1Q
        • 2.Qd3#
      • 1...g1B
        • 2.Qd3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se5
        • 2.Qe3#
      • 1...Ra3!
    • 1.Qxg6?
      • threat
        • 2.Qd3#
        • 2.Qe4#
      • 1...g1Q
        • 2.Qxg1#
      • 1...g1R
        • 2.Qxg1#
      • 1...Sc3
        • 2.Qd3#
      • 1...Se5
        • 2.Qe4#
      • 1...c4!
    • 1.Qe8?
      • threat
        • 2.Qe3#
        • 2.Qe4#
      • 1...c4
        • 2.Qe3#
      • 1...g1Q
        • 2.Qe4#
      • 1...g1B
        • 2.Qe4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Se5
        • 2.Qxe5#
      • 1...Be7!
    • 1.Qe7?
      • threat
        • 2.Qe3#
        • 2.Qe4#
      • 1...c4
        • 2.Qe3#
      • 1...g1Q
        • 2.Qe4#
      • 1...g1B
        • 2.Qe4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Se5
        • 2.Qxe5#
      • 1...Bxe7!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qe3#
        • 2.Qe4#
      • 1...c4
        • 2.Qe3#
      • 1...g1Q
        • 2.Qe4#
      • 1...g1B
        • 2.Qe4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Se5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD,S_CUTR(e)::QAR1(F)
  • Tries
    • Try
      • Q(F);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::QAB1(F)
        • P(c);::QAR1(F)
        • S(a);N_GUARD::QAB1(F),XS(a)
        • S(l);N_SPINR(j)::QAB1(F)
      • Refutation
        • R(e);
    • Try
      • Q(F);XP(k)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,P_PINQ(F)::QAB(F),XQ(c)
        • P(c);OGATE,P_PINQ(F)::QAB(F),XR(c)
        • S(a);::QAR1(F)
        • S(l);N_SPINR(j)::QAR1(F)
      • Refutation
        • P(h);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::QAB1(F)
        • P(c);::QAR1(F)
        • S(a);::QAB1(F)
        • S(l);N_GUARD,N_SPINR(j)::QAB1(F),XS(l)
      • Refutation
        • B(m);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::QAB1(F)
        • P(c);::QAR1(F)
        • S(a);::QAB1(F)
        • S(l);N_GUARD,N_SPINR(j)::QAB1(F),XS(l)
      • Refutation
        • B(m);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • P(h);::QAB1(F)
      • P(c);::QAR1(F)
      • S(a);::QAB1(F)
      • S(l);N_GUARD,N_SPINR(j)::QAB1(F),XS(l)
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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).