MESON Chess Problem Database

Problem Display
PID: 69841 (1NQ1R3/p1p2p2/2p5/Kn1k4/b2r4/p1n2R2/8/3N2BB w - - 0 1)

Goldschmeding, Cornelis

Isaryanov, Vladimir Petrovich

Rudenko, Valentin Fedorovich

3rd Comm., Banska Bystrica (BABY), 1960

1NQ1R3/p1p2p2/2p5/Kn1k4/b2r4/p1n2R2/8/3N2BB

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rd3#
  • Tries
    • 1.Rxc3+?
      • 1...Kd6
        • 2.Rxc6#
        • 2.Qd7#
        • 2.Qd8#
      • 1...Re4!
    • 1.Rf5+?
      • 1...Kd6
        • 2.Qd7#
        • 2.Qd8#
      • 1...Kc4!
    • 1.Qf5+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kc4!
    • 1.Qe6+?
      • 1...Kc5
        • 2.Sa6#
        • 2.Sd7#
        • 2.Qxc6#
      • 1...fxe6!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxc6#
      • 1...Kc4
        • 2.Rxc3#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kd6
        • 2.Qxc6#
      • 1...Rc4
        • 2.Rd3#
      • 1...Sd6
        • 2.Rf5#
      • 1...c5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::B(C)+R(D),DCHECK
  • Tries
    • Try
      • R(D);CHECK,XS(b)
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • R(D);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB1(G)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Refutation
        • P(j);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XP(g)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT::R1(D),XS(b)
      • K(f);P-FLIGHT,P_SPINR(d)::QAR1(G),XP(g)
      • K(f);P-FLIGHT,P_SPINP(g)::QAR1(G),XP(g)
      • R(d);SBLOCK::B(C)+R(D),DCHECK
      • S(e);SBLOCK::B(C)+R(D),DCHECK
      • P(g);SBLOCK::S(A)
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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).