MESON Chess Problem Database

Problem Display
PID: 158369 (7B/4p1r1/2K1pn2/4k2p/4p2N/6pN/6Q1/b2R4 w - - 0 1)

Nestorescu, Virgil

Vatarescu, Paul

Problem (Zagreb), 1968

7B/4p1r1/2K1pn2/4k2p/4p2N/6pN/6Q1/b2R4

#2

6 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Qxg3#
    • 1...Rh7
      • 2.Qxg3#
    • 1...Bb2
      • 2.Qxb2#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qf4#
      • 1...Sd5
        • 2.Qg5#
      • 1...Rg4
        • 2.Qa5#
      • 1...e3!
    • 1.Qf2?
      • threat
        • 2.Qf4#
      • 1...Rg4
        • 2.Qc5#
      • 1...Sd5
        • 2.Sg6#
      • 1...gxf2!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qf4#
      • 1...Rg4
        • 2.Qb5#
      • 1...Sd5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(i);N_GUARD,P_SPINS(g)::QAB(B),XP(b)
    • B(a);N_GUARD::QAB(B),XB(a)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(g);P_SPINR(i)::QAR2(B)
        • R(i);P_SPINS(g)::QAR(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • R(i);P_SPINS(g)::QAR2(B)
        • S(g);P_SPINR(i)::S(D)
      • Refutation
        • P(b);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(i);P_SPINS(g)::QAR(B)
      • S(g);P_SPINR(i)::S(D)
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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).