MESON Chess Problem Database

Problem Display
PID: 224756 (8/1R3Qq1/p1p2r2/k2r2BR/3P4/3N1p2/8/3K4 w - - 0 1)

Kanner, Sigmund

Wiener Hausfrauen-Zeitung, 1888

8/1R3Qq1/p1p2r2/k2r2BR/3P4/3N1p2/8/3K4

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Qa2#
    • 1...Rc5
      • 2.Qa2#
    • 1...Re5
      • 2.Qa2#
    • 1...Rdf5
      • 2.Qa2#
    • 1...Rxg5
      • 2.Qa2#
    • 1...Rdd6
      • 2.Qa2#
    • 1...Rd7
      • 2.Qa2#
    • 1...Rd8
      • 2.Qa2#
  • Tries
    • 1.Qxd5+?
      • 1...Ka4
        • 2.Qa2#
      • 1...c5
        • 2.Qa2#
      • 1...cxd5!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Bd2#
      • 1...Qxg5
        • 2.Qc7#
      • 1...Rxg5
        • 2.Qa2#
      • 1...Qh6
        • 2.Qc7#
      • 1...Qf8
        • 2.Qc7#
      • 1...Rf4
        • 2.Bd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(c);OGATE::QAR(G)
    • R(c);OGATE,P_SPINR(c),XB(D)::QAR(G)
  • Tries
    • Try
      • Q(G);CHECK,XR(c)
      • Vars
        • K(b);P-FLIGHT::QAR2(G)
        • P(e);P_SPINP(e)::QAR(G)
      • Refutation
        • P(e);XQ(G)
  • Actual
    • S(B);P_SPINP(C)
    • Threat
      • B(D)
    • Vars
      • Q(g);N_GUARD,XB(D)::QAB(G)
      • R(c);N_PINP(C),OGATE,P_SPINR(c),XB(D)::QAR(G)
      • Q(g);N_GUARD::QAB(G)
      • R(f);OGATE::B(D)
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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).