MESON Chess Problem Database

Problem Display
PID: 206581 (8/1Q6/p7/P1p5/2k5/3pP3/2bKN3/2R5 w - - 0 1)

Regos, Imre

Nepszava, 1925

8/1Q6/p7/P1p5/2k5/3pP3/2bKN3/2R5

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...dxe2
      • 2.Rxc2#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Qe4#
        • 2.Qf7#
      • 1...dxe2
        • 2.Qf7#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Bxb1!
  • Keys
    • 1.Sc3!
      • 1...Bb1
        • 2.Sxb1#
      • 1...Bd1
        • 2.Sxd1#
      • 1...Bb3
        • 2.Qe4#
      • 1...Ba4
        • 2.Sxa4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD,XS(C)::R(A),XB(a)
  • Tries
    • Try
      • R(A);N_PINB(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XS(C)::QAB(F)
        • B(a);N_GUARD::QAB1(F),XB(a)
      • Refutation
        • B(a);XR(A)
  • Actual
    • S(C);N_PINB(a)
    • Vars
      • B(a);::R(A)+S(C),XB(a)
      • B(a);SBLOCK::QAR2(F)
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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).