MESON Chess Problem Database

Problem Display
PID: 195173 (1B2K3/7Q/2BPpp2/1b1Nk3/r7/b3P3/8/8 w - - 0 1)

Saska, Istvan

Magyar Sakkvilag, 1918

1B2K3/7Q/2BPpp2/1b1Nk3/r7/b3P3/8/8

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.d7#
    • 1...Bc1
      • 2.d7#
    • 1...Bb2
      • 2.d7#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sd7#
      • 1...Ra7
        • 2.Qe4#
      • 1...Bxc6+!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qe4#
        • 2.d7#
      • 1...Bxc6+
        • 2.d7#
      • 1...Rxb4
        • 2.d7#
      • 1...Bxb4
        • 2.Qe4#
      • 1...f5
        • 2.Qg7#
        • 2.Qh8#
      • 1...Ra7
        • 2.Qe4#
      • 1...Ra8
        • 2.Qe4#
      • 1...Bd3
        • 2.Sxd3#
        • 2.d7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(b);S_CUTB(a)::B(F)+P(D)
    • B(a);N_GUARD::B(F)+P(D)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • R(b);N_GUARD::QAR1(E)
      • Refutation
        • B(c);CHECK,XB(C)
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • B(c);CHECK,XB(C)::B(F)+P(D)
      • R(b);XS(B)::B(F)+P(D)
      • B(a);XS(B)::QAR1(E)
      • R(b);::QAR1(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).