MESON Chess Problem Database

Problem Display
PID: 190213 (1R6/5P1K/3p4/PBkb1pNp/R3qQ1r/8/2n5/1r2N3 w - - 0 1)

Wesin, Miklos

Magyar Sakkujsag, 1913

1R6/5P1K/3p4/PBkb1pNp/R3qQ1r/8/2n5/1r2N3

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sd3#
    • 1...Qg2
      • 2.Sd3#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qxa4
      • 2.Sd3#
    • 1...Qb4
      • 2.Sd3#
    • 1...Qxf4
      • 2.Sd3#
    • 1...Qe5
      • 2.Sd3#
    • 1...Qe6
      • 2.Sd3#
    • 1...Qe7
      • 2.Sd3#
    • 1...Qe8
      • 2.Sd3#
  • Tries
    • 1.Se6+?
      • 1...Qxe6
        • 2.Sd3#
      • 1...Bxe6!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Se6#
      • 1...f4+
        • 2.Sxe4#
      • 1...Qxa4
        • 2.Sd3#
      • 1...Qxe5
        • 2.Sd3#
      • 1...Rxb5
        • 2.Rc8#
      • 1...dxe5
        • 2.f8Q#
        • 2.f8B#
      • 1...Sd4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD::S(A)
    • Q(c);N_GUARD::S(A),XQ(c)
    • Q(c);N_GUARD,XR(B)::S(A)
    • Q(c);N_GUARD,XQ(C)::S(A)
    • Q(c);N_GUARD,P_PINP(G)::S(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • Q(c);XS(F)::S(A)
      • Refutation
        • B(f);XS(F)
  • Actual
    • Q(C);P_PINB(f)
    • Threat
      • S(F)
    • Vars
      • P(g);CHECK,N_GUARD,S_CUTR(d)::S(F),XQ(c)
      • Q(c);N_GUARD,XR(B)::S(A)
      • Q(c);N_GUARD,N_SPINB(f),XQ(C)::S(A)
      • R(a);SBLOCK,XB(E)::R(I)
      • P(i);N_SPINB(f),XQ(C)::P=Q
      • S(b);S_CUTQ(c)::R1(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).