MESON Chess Problem Database

Problem Display
PID: 36342 (R3B3/1PP1k1P1/Knpp2p1/Bp1qP1N1/4Nn1Q/7b/5R2/5r2 w - - 0 1)

Boros, Sandor

Recomm., BCF 007. Ty., 1931-1932

R3B3/1PP1k1P1/Knpp2p1/Bp1qP1N1/4Nn1Q/7b/5R2/5r2

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.exd6#
    • 1...Qb3
      • 2.exd6#
    • 1...Qc4
      • 2.exd6#
    • 1...Qf7
      • 2.exd6#
    • 1...Qg8
      • 2.exd6#
    • 1...Se6
      • 2.g8S#
  • Tries
    • 1.Sf3+?
      • 1...Ke6
        • 2.Qf6#
      • 1...g5!
    • 1.Sxh3+?
      • 1...Ke6
        • 2.Qf6#
      • 1...g5!
    • 1.Se6+?
      • 1...Kxe6
        • 2.Qf6#
      • 1...g5!
    • 1.Sf7+?
      • 1...Ke6
        • 2.Qf6#
      • 1...g5!
    • 1.Sh7+?
      • 1...Ke6
        • 2.Qf6#
      • 1...g5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qf8#
      • 1...Qf7
        • 2.exd6#
      • 1...Qg8
        • 2.exd6#
      • 1...Se6
        • 2.g8S#
      • 1...Sd7
        • 2.c8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_GUARD,P_PINB(D)::P(E),XP(h)
    • Q(e);N_GUARD::P(E),XP(h)
    • S(c);S_CUTQ(e)::P=S
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(j);P-FLIGHT::QAR1(C)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(F);CHECK,XB(b)
      • Vars
        • K(j);P-FLIGHT::QAR1(C)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(F);CHECK
      • Vars
        • K(j);P-FLIGHT,XS(F)::QAR1(C)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(F);CHECK
      • Vars
        • K(j);P-FLIGHT::QAR1(C)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(F);CHECK
      • Vars
        • K(j);P-FLIGHT::QAR1(C)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • Q(e);N_GUARD::P(E),XP(h)
      • S(c);S_CUTQ(e)::P=S
      • S(f);N_GUARD,S_CUTB(b)::P=S
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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).