MESON Chess Problem Database

Problem Display
PID: 223318 (5K2/8/Q5p1/2B1pk2/5rNR/7B/6P1/5N2 w - - 0 1)

Weiss, Alexander

Charleston Sunday News, 1886

5K2/8/Q5p1/2B1pk2/5rNR/7B/6P1/5N2

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4+
      • 2.Sf6#
    • 1...Re4
      • 2.Qf6#
    • 1...e4
      • 2.Qf6#
    • 1...g5
      • 2.Sg3#
  • Tries
    • 1.Sfe3+?
      • 1...Ke4+
        • 2.Sf6#
      • 1...Kg5+!
  • Keys
    • 1.Be3!
      • 1...Ke4+
        • 2.Sf6#
      • 1...Kg5+
        • 2.Qf6#
      • 1...Rxf1
        • 2.Sf2#
        • 2.Sh2#
        • 2.Sf6#
        • 2.Sh6#
      • 1...Rxg4
        • 2.Sg3#
      • 1...Rf2
        • 2.Sg3#
        • 2.Sxf2#
        • 2.Sgh2#
        • 2.Sf6#
        • 2.Sh6#
      • 1...Rf3
        • 2.Sh6#
      • 1...Ra4
        • 2.Sg3#
        • 2.Sh6#
      • 1...Rb4
        • 2.Sg3#
        • 2.Sh6#
      • 1...Rc4
        • 2.Sg3#
        • 2.Sh6#
      • 1...Rd4
        • 2.Sg3#
        • 2.Sh6#
      • 1...Re4
        • 2.Sg3#
        • 2.Sh6#
        • 2.Qc8#
        • 2.Qf6#
      • 1...e4
        • 2.Qf6#
      • 1...g5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);CHECK,S_FLIGHT::S(D)
    • R(a);SBLOCK::QAR1(G)
    • P(b);SBLOCK::QAR1(G)
    • P(d);SBLOCK::S(A)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);CHECK,S_FLIGHT::S(D)
      • Refutation
        • K(c);CHECK,P-FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(c);CHECK,S_FLIGHT::S(D)
      • K(c);CHECK,P-FLIGHT,P_SPINR(a)::QAB1(G)
      • R(a);P_SPINR(a),XS(D)::S(A)
      • R(a);::B(C)+S(D),DCHECK
      • P(b);SBLOCK::QAR1(G)
      • P(d);SBLOCK::S(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).