MESON Chess Problem Database

Problem Display
PID: 165429 (7R/2ppk2n/6p1/2PP2PB/8/7Q/8/7K w - - 0 1)

Hawes, Frederick Thomas

British Chess Magazine, 1909

7R/2ppk2n/6p1/2PP2PB/8/7Q/8/7K

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qxd7#
    • 1...d6
      • 2.Qe6#
  • Tries
    • 1.Re8+?
      • 1...Kf7
        • 2.Qxd7#
      • 1...Kxe8!
    • 1.d6+?
      • 1...Kf7
        • 2.Qxd7#
      • 1...cxd6!
  • Keys
    • 1.Qf5!
      • 1...Sxg5
        • 2.Qf8#
      • 1...gxf5
        • 2.Re8#
      • 1...gxh5
        • 2.Qxh7#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sf8
        • 2.Qxf8#
      • 1...c6
        • 2.d6#
      • 1...d6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(d);P-FLIGHT,P_SPINP(a)::QAR2(B),XP(c)
    • P(c);N_GUARD::QAR1(B)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(a)::QAR2(B),XP(c)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(a),XR(G)
    • Try
      • P(D);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(a)::QAR2(B),XP(c)
      • Refutation
        • P(b);XP(D)
  • Actual
    • Q(B);
    • Vars
      • S(e);N_GUARD,XP(E)::QAB1(B)
      • P(a);XQ(B)::R1(G)
      • P(a);OGATE,XB(F)::QAR(B),XS(e)
      • S(e);N_GUARD::QAB1(B),XS(e)
      • P(b);N_GUARD::P(D)
      • P(c);N_GUARD::QAR1(B)
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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).