MESON Chess Problem Database

Problem Display
PID: 21438 (8/7Q/4K2p/4p2k/6nP/6n1/5B2/4R3 w - - 0 1)

Knotek, Ladislav

Besedy lidu, 1919

8/7Q/4K2p/4p2k/6nP/6n1/5B2/4R3

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Qf5#
      • 2.Qf7#
    • 1...Sh1
      • 2.Qf5#
      • 2.Qf7#
    • 1...Se2
      • 2.Qf5#
      • 2.Qf7#
    • 1...Se4
      • 2.Qf7#
    • 1...Sf5
      • 2.Qxf5#
      • 2.Qf7#
  • Tries
    • 1.Bxg3?
      • threat
        • 2.Qf5#
        • 2.Qf7#
      • 1...Sf2
        • 2.Qf5#
      • 1...Sh2
        • 2.Qf5#
      • 1...Sf6
        • 2.Qf5#
      • 1...Se3!
  • Keys
    • 1.Re4!
      • 1...Kxh4
        • 2.Qxh6#
      • 1...Sxe4
        • 2.Qf7#
      • 1...Sxf2
        • 2.Qf7#
      • 1...Sf1
        • 2.Qf5#
        • 2.Qf7#
      • 1...Sh1
        • 2.Qf5#
        • 2.Qf7#
      • 1...Se2
        • 2.Qf5#
        • 2.Qf7#
      • 1...Sf5
        • 2.Qxf5#
        • 2.Qf7#
      • 1...Sh2
        • 2.Qf7#
      • 1...Se3
        • 2.Qf7#
      • 1...Sf6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);::QAB(E)
  • Tries
    • Try
      • B(B);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAR2(E)
      • Refutation
        • S(b);
  • Actual
    • R(A);
    • Vars
      • K(d);P-FLIGHT,P_SPINS(a),XP(C)::QAR2(E),XP(e)
      • S(a);XR(A)::QAB(E)
      • S(b);XB(B)::QAB(E)
      • S(b);::QAB(E)
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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).