MESON Chess Problem Database

Problem Display
PID: 164665 (4K3/4BB2/4N1Pp/5Qnk/6r1/8/5P2/8 w - - 0 1)

Palkoska, Emil

Armeeblatt, 1902

4K3/4BB2/4N1Pp/5Qnk/6r1/8/5P2/8

#2

7 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Sg7#
      • 2.g7#
  • Tries
    • 1.Bxg5?
      • threat
        • 2.Sg7#
        • 2.g7#
      • 1...Rxg5
        • 2.Qh3#
      • 1...Re4
        • 2.Bf6#
        • 2.Be7#
        • 2.Bd8#
        • 2.g7#
      • 1...hxg5!
  • Keys
    • 1.Qf3!
      • 1...Kh4
        • 2.Qh1#
      • 1...Sxf3
        • 2.Sg7#
      • 1...Sxe6
        • 2.g7#
      • 1...Sxf7
        • 2.Sf4#
      • 1...Sh3
        • 2.Sg7#
        • 2.g7#
      • 1...Se4
        • 2.Sf4#
        • 2.Sg7#
        • 2.g7#
      • 1...Sh7
        • 2.Sf4#
        • 2.Sg7#
        • 2.gxh7#
        • 2.g7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);OGATE,P_SPINR(a),XB(E)::QAR2(B)
      • Refutation
        • P(d);P_SPINP(d),XB(E)
  • Actual
    • Q(B);N_PINS(b),P_PINR(a)
    • Vars
      • K(c);N_SPINR(a),P-FLIGHT,P_SPINS(b)::QAR(B)
      • S(b);N_SPINR(a),XQ(B)::S(C)
      • S(b);N_GUARD,XS(C)::B(F)+P(D)
      • S(b);XB(F)::S(C)
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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).