MESON Chess Problem Database

Problem Display
PID: 134367 (2rr4/1p1Q1Rp1/8/3Nnp1b/4kN2/1K2npPq/8/B2B1R2 w - - 0 1)

Sovik, Stefan

2nd Prize=, Brabec-70 JT, 2008

2rr4/1p1Q1Rp1/8/3Nnp1b/4kN2/1K2npPq/8/B2B1R2

#2

9 + 11

56 The Problemist 2009
23 Die Schwalbe 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3+
      • 2.Sxc3#
    • 1...Ra8
      • 2.Sc3#
    • 1...Rb8
      • 2.Sc3#
    • 1...S3g4
      • 2.Qxf5#
    • 1...S5g4
      • 2.Bxf3#
    • 1...g5
      • 2.Sf6#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Re7?
      • threat
        • 2.Rxe5#
      • 1...Rc3+
        • 2.Sxc3#
      • 1...Sc4
        • 2.Bc2#
      • 1...Sg4
        • 2.Bxf3#
      • 1...Re8!
    • 1.Qa4+?
      • 1...S3c4
        • 2.Re1#
      • 1...S5c4
        • 2.Re7#
      • 1...Rc4!
  • Keys
    • 1.Re1!
      • threat
        • 2.Rxe3#
      • 1...Rc3+
        • 2.Sxc3#
      • 1...Sc4
        • 2.Bc2#
      • 1...Sg4
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(j);CHECK,N_GUARD::S(G),XR(j)
    • R(j);N_GUARD::S(G)
    • S(a);N_GUARD,S_CUTQ(c)::QAB1(H),XP(f)
    • S(e);N_GUARD,S_CUTB(g)::B(B),XP(b)
    • P(i);N_GUARD::S(G)
  • Tries
    • Try
      • R(I);P_PINS(e)
      • Threat
        • R1(I),XS(e)
      • Vars
        • R(j);CHECK,N_GUARD::S(G),XR(j)
        • S(a);N_GUARD,S_CUTR(j)::B(B)
        • S(a);S_CUTB(g)::B(B),XP(b)
      • Refutation
        • R(k);
    • Try
      • Q(H);CHECK
      • Vars
        • S(a);P_SPINS(a),S_CUTR(j),S_CUTS(e)::R(C)
        • S(e);P_SPINS(e),S_CUTR(j),S_CUTS(a)::R(I)
      • Refutation
        • R(j);P_SPINR(j)
  • Actual
    • R(C);P_PINS(a)
    • Threat
      • R1(C),XS(a)
    • Vars
      • R(j);CHECK,N_GUARD::S(G),XR(j)
      • S(e);N_GUARD,S_CUTR(j)::B(B)
      • S(e);S_CUTQ(c)::QAB1(H),XP(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).