MESON Chess Problem Database

Problem Display
PID: 263172 (kN6/p4n2/Q2p1K2/8/8/r4b2/1R6/2r5 w - - 0 1)

Babiarz, Andrzej

SuperProblem, 2021

kN6/p4n2/Q2p1K2/8/8/r4b2/1R6/2r5

#2

4 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qb7#
    • 1...Bd1
      • 2.Qb7#
    • 1...Be2
      • 2.Qb7#
    • 1...Bg4
      • 2.Qb7#
    • 1...Bh5
      • 2.Qb7#
    • 1...Bb7
      • 2.Qxb7#
    • 1...d5
      • 2.Qb7#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Rb8#
      • 1...Rb1
        • 2.Qc8#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Rb3!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Rb8#
        • 2.Qb7#
        • 2.Qc8#
      • 1...Rxc6
        • 2.Qb7#
      • 1...Rxa6
        • 2.Rb8#
      • 1...Bxc6
        • 2.Qc8#
      • 1...Rb1
        • 2.Qb7#
        • 2.Qc8#
      • 1...Rb3
        • 2.Qxa7#
      • 1...Bg4
        • 2.Rb8#
        • 2.Qb7#
      • 1...Sd8
        • 2.Rb8#
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(a);S_CUTB(c)::QAB1(B)
    • B(c);N_GUARD::QAB1(B)
    • B(c);N_GUARD::QAB1(B),XB(c)
    • P(d);S_CUTB(c)::QAB1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(A)
      • Vars
        • R(a);N_GUARD::QAR2(B)
        • R(a);N_GUARD::QAR2(B),XR(a)
        • B(c);N_GUARD::QAB1(B),XB(c)
      • Refutation
        • R(b);
  • Actual
    • S(D);
    • Threat
      • DUALS(3)
    • Vars
      • R(a);XS(D)::QAB1(B)
      • R(b);N_SPINP(e),XQ(B)::R1(A)
      • B(c);XS(D)::QAR2(B)
      • R(b);N_GUARD::QAR1(B),XP(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).