MESON Chess Problem Database

Problem Display
PID: 2631 (8/1p1K4/8/2k1pN2/R1N1P1p1/6r1/5P1Q/2R5 w - - 0 1)

Pradignat, Emile Leonard

Source?, 0000

8/1p1K4/8/2k1pN2/R1N1P1p1/6r1/5P1Q/2R5

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qxe5#
    • 1...Rg2
      • 2.Qxe5#
    • 1...Ra3
      • 2.Qxe5#
    • 1...Rb3
      • 2.Qxe5#
    • 1...Rc3
      • 2.Qxe5#
    • 1...Re3
      • 2.Qxe5#
    • 1...Rf3
      • 2.Qxe5#
    • 1...Rh3
      • 2.Qxe5#
  • Tries
    • 1.Sa3+?
      • 1...Kb6
        • 2.Qh6#
      • 1...Rc3!
    • 1.fxg3?
      • 1...b5
        • 2.Qg1#
        • 2.Qf2#
      • 1...b6
        • 2.Sa3#
        • 2.Scd6#
      • 1...Kb5!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Sb2#
      • 1...exd4
        • 2.Qh5#
      • 1...Rc3
        • 2.Qxe5#
      • 1...Rg1
        • 2.Qxe5#
      • 1...Rg2
        • 2.Qxe5#
      • 1...Ra3
        • 2.Qxe5#
      • 1...Rb3
        • 2.Qxe5#
      • 1...Rd3
        • 2.Qxe5#
      • 1...Re3
        • 2.Qxe5#
      • 1...Rf3
        • 2.Qxe5#
      • 1...Rh3
        • 2.Qxe5#
      • 1...b5
        • 2.Se6#
      • 1...b6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::QAR2(C),XP(d)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(C)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • P(B);XR(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(G);
    • Vars
      • K(c);S_FLIGHT,XS(G)::R(D)+S(E)
      • P(d);OGATEB,SBLOCK,XS(G)::QAR(C)
      • R(a);OGATE::QAR2(C),XP(d)
      • R(a);OGATE,P_PINS(G)::QAR2(C),XP(d)
      • P(e);SBLOCK::S(G)
      • P(e);SBLOCK::R(A)+S(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).