MESON Chess Problem Database

Problem Display
PID: 227637 (B1k1K3/1R1p4/1p6/2q5/7B/R1Q5/8/8 w - - 0 1)

Boros, Sandor

Weisz, Odon

Nepszava, 1926

B1k1K3/1R1p4/1p6/2q5/7B/R1Q5/8/8

#2

6 + 4

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Rxc3#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qc7
      • 2.Qxc7#
    • 1...b5
      • 2.Qxc5#
    • 1...d5
      • 2.Qh3#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Rb8#
      • 1...Qc7
        • 2.Qxc7#
      • 1...d6!
  • Keys
    • 1.Kf7!
      • 1...Qc4+
        • 2.Qxc4#
      • 1...Qxc3
        • 2.Rxc3#
      • 1...Qc6
        • 2.Qh8#
      • 1...Qc7
        • 2.Qxc7#
      • 1...b5
        • 2.Qxc5#
      • 1...d5
        • 2.Qh3#
      • 1...d6
        • 2.Qh8#

This anticipates 58637(1955)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
    • Q(a);OGATEB::QAR(B),XQ(a)
    • Q(a);OGATE::QAR1(B),XQ(a)
    • P(b);N_GUARD::QAR(B),XQ(a)
    • P(c);OGATEB::QAB(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • R1(D)
      • Vars
        • Q(a);OGATE::QAR1(B),XQ(a)
      • Refutation
        • P(c);
  • Actual
    • K(F);S_FLIGHT
    • Vars
      • Q(a);CHECK,OGATEB::QAR(B),XQ(a)
      • Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
      • Q(a);N_GUARD::QAR(B)
      • Q(a);OGATE::QAR1(B),XQ(a)
      • P(b);N_GUARD::QAR(B),XQ(a)
      • P(c);OGATEB::QAB(B)
      • P(c);::QAR(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).