MESON Chess Problem Database

Problem Display
PID: 62110 (q4kb1/2p1Rp1n/p1P3p1/8/1B4r1/K1Q5/7b/5R2 w - - 0 1)

Strerath, Otto

Schach, 1951

q4kb1/2p1Rp1n/p1P3p1/8/1B4r1/K1Q5/7b/5R2

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.Rexf7#
    • 1...Rg3
      • 2.Ree1#
      • 2.Re2#
      • 2.Re3#
      • 2.Re4#
      • 2.Re6#
    • 1...Rf4
      • 2.Re4#
    • 1...f5
      • 2.Qg7#
  • Keys
    • 1.Qh8!
      • threat
        • 2.Rfxf7#
      • 1...Rg3+
        • 2.Re3#
      • 1...Qe8
        • 2.Rexf7#
      • 1...Rf4
        • 2.Re4#
      • 1...Bf4
        • 2.Re5#
      • 1...Sg5
        • 2.Qh6#
      • 1...Sf6
        • 2.Qh6#
      • 1...f5
        • 2.Qg7#
      • 1...f6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(h);SBLOCK::B(D)+R(F),DCHECK,XP(f)
    • R(b);N_SPINP(f),S_CUTB(a)::B(D)+R(F)
    • P(f);::QAB1(C)
  • Actual
    • Q(C);P_PINB(j)
    • Threat
      • R1(A),XP(f)
    • Vars
      • R(b);CHECK,N_GUARD,S_CUTB(a)::B(D)+R(F)
      • Q(h);SBLOCK::B(D)+R(F),DCHECK,XP(f)
      • R(b);N_SPINP(f),S_CUTB(a)::B(D)+R(F)
      • B(a);N_SPINP(f),S_CUTR(b)::B(D)+R(F)
      • S(g);OGATE::QAB(C)
      • S(g);N_SPINP(f),OGATE::QAB(C)
      • P(f);::QAB1(C)
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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).