MESON Chess Problem Database

Problem Display
PID: 203293 (b2Q4/n2p3r/3k4/N4PPp/nP2pK2/4Np2/3r1P1B/8 w - - 0 1)

Rauch, Meir

5th HM., Kitzinger Arbeiter-schachklub, 1924

b2Q4/n2p3r/3k4/N4PPp/nP2pK2/4Np2/3r1P1B/8

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sec4#
    • 1...Re7
      • 2.Qb8#
    • 1...Bc6
      • 2.Sac4#
    • 1...Sc6
      • 2.Sac4#
    • 1...h4
      • 2.Kg4#
  • Tries
    • 1.Qf8+?
      • 1...Re7
        • 2.Qb8#
      • 1...Kc7!
    • 1.g6?
      • threat
        • 2.Kg5#
      • 1...Rd5
        • 2.Sec4#
      • 1...Re7
        • 2.Qb8#
      • 1...Sc6
        • 2.Sac4#
      • 1...Rxf2!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Kh3#
        • 2.Kh4#
      • 1...h4+
        • 2.Kh3#
        • 2.Kg4#
      • 1...Ke5
        • 2.Qf6#
      • 1...Rxf2
        • 2.Kxf2#
      • 1...Rd5
        • 2.Sec4#
      • 1...Re7
        • 2.Qb8#
      • 1...Sc6
        • 2.Sac4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK::S(C)
    • R(i);SBLOCK::QAB(I)
    • B(j);SBLOCK::S(F)
    • S(g);SBLOCK::S(F)
    • P(e);::B(B)+K(E)
  • Tries
    • Try
      • Q(I);CHECK,N_PINP(h)
      • Vars
        • R(i);P_SPINR(i),SBLOCK::QAB(I)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(H);
      • Threat
        • B(B)+K(E)
      • Vars
        • R(a);SBLOCK::S(C)
        • R(i);SBLOCK::QAB(I)
        • S(g);SBLOCK::S(F)
      • Refutation
        • R(a);XP(A)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • K(f);N_SPINP(h),S_FLIGHT::QAB1(I)
      • R(a);XP(A)::B(B)+K(E),XR(a)
      • R(a);SBLOCK::S(C)
      • R(i);SBLOCK::QAB(I)
      • S(g);SBLOCK::S(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).