MESON Chess Problem Database

Problem Display
PID: 178752 (1k6/6r1/nKQ2P2/7b/8/8/8/8 w - - 0 1)

Guttmann, Erwin Moritz Herbert

Springaren, 1961

1k6/6r1/nKQ2P2/7b/8/8/8/8

#2

3 + 4

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qb7#
    • 1...Rg2
      • 2.Qb7#
    • 1...Rg3
      • 2.Qb7#
    • 1...Rg4
      • 2.Qb7#
    • 1...Rg5
      • 2.Qb7#
    • 1...Rg6
      • 2.Qb7#
      • 2.Qe8#
    • 1...Rb7+
      • 2.Qxb7#
    • 1...Rf7
      • 2.Qe8#
    • 1...Rg8
      • 2.Qb7#
    • 1...Bd1
      • 2.Qe8#
    • 1...Be2
      • 2.Qe8#
    • 1...Bf3
      • 2.Qe8#
    • 1...Bf7
      • 2.Qb7#
    • 1...Be8
      • 2.Qxe8#
    • 1...Sc7
      • 2.Qb7#
  • Tries
    • 1.fxg7?
      • threat
        • 2.Qb7#
      • 1...Bf3
        • 2.Qe8#
        • 2.g8Q#
        • 2.g8R#
      • 1...Sc5!
  • Keys
    • 1.f7!
      • threat
        • 2.Qb7#
        • 2.Qe8#
      • 1...Rxf7
        • 2.Qe8#
      • 1...Bxf7
        • 2.Qb7#
      • 1...Sc7
        • 2.Qb7#
      • 1...Rg6
        • 2.f8Q#
        • 2.f8R#
      • 1...Rg8
        • 2.Qb7#
      • 1...Bf3
        • 2.Qe8#
        • 2.f8Q#
        • 2.f8R#
      • 1...Bg4
        • 2.Qb7#
      • 1...Sc5
        • 2.Qe8#

This anticipates 16258(2000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(c);N_GUARD::QAR1(B)
    • R(c);CHECK,N_GUARD::QAR1(B),XR(c)
    • R(c);S_CUTB(a)::QAR(B)
    • B(a);N_GUARD::QAR(B)
    • B(a);S_CUTR(c)::QAR1(B)
    • B(a);N_GUARD::QAR(B),XB(a)
    • S(b);S_CUTR(c)::QAR1(B)
  • Tries
    • Try
      • P(C);XR(c)
      • Threat
        • QAR1(B)
      • Refutation
        • S(b);
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(c);XP(C)::QAR(B)
      • B(a);XP(C)::QAR1(B)
      • S(b);::QAR1(B)
      • R(c);P_PINQ(B),S_CUTB(a)::P=Q
      • R(c);::QAR1(B)
      • B(a);::QAR1(B)
      • S(b);::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).