MESON Chess Problem Database

Problem Display
PID: 73172 (8/brPR4/2N1R3/Ppk2N2/7K/1p1p4/1Pr2P2/2Q3B1 w - - 0 1)

Hassberg, Eric Manfred

Tump, Raymond

5th Prize, Milwaukee Journal, 1945

8/brPR4/2N1R3/Ppk2N2/7K/1p1p4/1Pr2P2/2Q3B1

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Qxc3#
    • 1...Rc4+
      • 2.f4#
  • Tries
    • 1.Re5+?
      • 1...Kc4
        • 2.Sd6#
      • 1...Kxc6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Se3#
      • 1...Rc4+
        • 2.Sfd4#
      • 1...Kc4
        • 2.Sd6#
      • 1...Rxf2
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(a);OGATE::QAR2(A),XR(a)
    • R(a);CHECK::B(B)+P(D)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • K(e);P-FLIGHT::S(G)
      • Refutation
        • K(e);P-FLIGHT,XS(H)
  • Actual
    • Q(A);N_PINR(a)
    • Threat
      • QAR(A)+S(G)
    • Vars
      • R(a);CHECK,SBLOCK::QAR(A)+S(G)
      • K(e);P-FLIGHT::S(G)
      • R(a);OGATEB,P_SPINR(a),XP(D)::QAR(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).