MESON Chess Problem Database

Problem Display
PID: 231160 (8/8/8/8/1K4b1/1R6/3k2PR/6Q1 w - - 0 1)

Giobel, Bengt Rudolf

Svenska Dagbladet, 1927

8/8/8/8/1K4b1/1R6/3k2PR/6Q1

#2

5 + 2

6490 yacpdb 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.g3#
    • 1...Bf3
      • 2.gxf3#
    • 1...Bh3
      • 2.gxh3#
    • 1...Bf5
      • 2.g3#
      • 2.g4#
    • 1...Bh5
      • 2.g4#
    • 1...Be6
      • 2.g3#
      • 2.g4#
    • 1...Bd7
      • 2.g3#
      • 2.g4#
    • 1...Bc8
      • 2.g3#
      • 2.g4#
  • Tries
    • 1.Qc1+?
      • 1...Ke2
        • 2.g3#
      • 1...Kxc1!
  • Keys
    • 1.Rc3!
      • 1...Ke2
        • 2.g3#
      • 1...Bd1
        • 2.Qe3#
      • 1...Be2
        • 2.Qc1#
      • 1...Bf3
        • 2.gxf3#
      • 1...Bh3
        • 2.gxh3#
      • 1...Bf5
        • 2.g3#
        • 2.g4#
      • 1...Bh5
        • 2.g4#
      • 1...Be6
        • 2.g3#
        • 2.g4#
      • 1...Bd7
        • 2.g3#
        • 2.g4#
      • 1...Bc8
        • 2.g3#
        • 2.g4#

This anticipates 54277(1948)

This is a version of 17262

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(C)+P(B)
    • B(b);OGATE::R(C)+P(B),XB(b)
    • B(b);OGATE::R(C)+P(B)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)+P(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • R(D);
    • Vars
      • K(a);P-FLIGHT::R(C)+P(B)
      • B(b);SBLOCK::QAB1(A)
      • B(b);OGATE::R(C)+P(B),XB(b)
      • B(b);OGATE::R(C)+P(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).