MESON Chess Problem Database

Problem Display
PID: 106181 (1Q6/2pNp3/n3P3/K1RP4/2Nkp3/R2P1r2/4rP2/6B1 w - - 0 1)

Hronec, Jaroslav

Praca, 1955

1Q6/2pNp3/n3P3/K1RP4/2Nkp3/R2P1r2/4rP2/6B1

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qb2#
    • 1...Rb2
      • 2.Qxb2#
    • 1...Rexf2
      • 2.Qb2#
    • 1...Ree3
      • 2.Qb2#
    • 1...Rfxf2
      • 2.Qh8#
    • 1...Rxd3
      • 2.Qh8#
    • 1...Rfe3
      • 2.Qh8#
    • 1...c6
      • 2.Qe5#
  • Keys
    • 1.Se3!
      • threat
        • 2.Rc4#
      • 1...Rexf2
        • 2.Sc2#
      • 1...Rexe3
        • 2.Qb2#
      • 1...Rfxf2
        • 2.Sf5#
      • 1...Rfxe3
        • 2.Qh8#
      • 1...Sxc5
        • 2.Qb4#
      • 1...Rc2
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::QAB(K)
    • R(a);N_GUARD::QAB(K),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(B)::QAB(K)
    • R(b);N_GUARD,P_SPINR(b),XP(B)::QAB(K)
    • R(b);N_GUARD,XP(D)::QAB(K)
    • R(b);N_GUARD::QAB(K)
    • P(f);OGATE::QAB1(K)
  • Actual
    • S(E);
    • Threat
      • R1(G)
    • Vars
      • R(a);N_GUARD,XP(B)::S(E)
      • R(a);N_GUARD,XS(E)::QAB(K)
      • R(b);N_GUARD,XP(B)::S(E)
      • R(b);N_GUARD,XS(E)::QAB(K)
      • S(e);N_GUARD,XR(G)::QAR2(K)
      • R(a);N_GUARD::S(E),XR(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).