MESON Chess Problem Database

Problem Display
PID: 56574 (8/Q3p3/1n2P3/B3kNP1/1P2n3/4R1P1/B2NK3/8 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

To-Day, 1901

8/Q3p3/1n2P3/B3kNP1/1P2n3/4R1P1/B2NK3/8

#2

11 + 4

3262 700 Chess Problems 1902

SOLUTION

  • SOUND
  • Sets
    • 1...Sa8
      • 2.Qc5#
    • 1...Sc8
      • 2.Qc5#
  • Tries
    • 1.Sg7?
      • 1...Kd4
        • 2.Sf3#
      • 1...Sa4
        • 2.Bc7#
      • 1...Sc4
        • 2.Qc5#
      • 1...Sd5
        • 2.Sc4#
      • 1...Sd7
        • 2.Bc7#
      • 1...Sa8
        • 2.Qc5#
      • 1...Sc8
        • 2.Qc5#
      • 1...Kd6!
    • 1.Qb7?
      • threat
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Kxf5!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Sf3#
      • 1...Kd6
        • 2.Qb8#
      • 1...Sa4
        • 2.Bc7#
      • 1...Sc4
        • 2.Qc5#
      • 1...Sd5
        • 2.Sc4#
      • 1...Sd7
        • 2.Bc7#
      • 1...Sa8
        • 2.Qc5#
      • 1...Sc8
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAR2(K)
  • Tries
    • Try
      • S(H);
      • Vars
        • K(b);N_SPINS(a),P_SPINS(c),S_FLIGHT::S(B)
        • S(c);OGATE::B(G)
        • S(c);OGATE::QAR2(K)
        • S(c);N_GUARD,SBLOCK::S(B)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(K);
      • Threat
        • QAR1(K),XS(a)
      • Vars
        • S(c);N_GUARD::QAR1(K),XS(c)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT,XS(H)
  • Actual
    • S(H);
    • Vars
      • K(b);N_SPINS(a),P_SPINS(c),S_FLIGHT,XS(H)::S(B)
      • K(b);N_SPINS(a),S_FLIGHT::QAB(K)
      • S(c);OGATE::B(G)
      • S(c);OGATE::QAR2(K)
      • S(c);N_GUARD,SBLOCK::S(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).