MESON Chess Problem Database

Problem Display
PID: 104522 (8/8/1b2p1p1/8/8/7K/1Qp5/7k w - - 0 1)

Nesic, Milivoj S

Mezija, 1995

8/8/1b2p1p1/8/8/7K/1Qp5/7k

#2

2 + 5

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qb7#
    • 1...Bc7
      • 2.Qc1#
    • 1...Bd8
      • 2.Qc1#
    • 1...c1Q
      • 2.Qg2#
      • 2.Qh2#
    • 1...c1S
      • 2.Qg2#
      • 2.Qh2#
    • 1...c1B
      • 2.Qg2#
      • 2.Qh2#
    • 1...c1R
      • 2.Qg2#
      • 2.Qh2#
  • Tries
    • 1.Qxc2?
      • threat
        • 2.Qg2#
        • 2.Qh2#
      • 1...Kg1
        • 2.Qg2#
      • 1...Bg1
        • 2.Qe4#
        • 2.Qg2#
        • 2.Qc6#
      • 1...Bc7
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
        • 2.Qg2#
      • 1...Bf2!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qh2#
      • 1...Kg1
        • 2.Qe1#
      • 1...Bg1
        • 2.Qe4#
      • 1...Bc7
        • 2.Qe1#

Anticipated by 77691(1970)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATE,SBLOCK::QAB(A)
    • B(c);N_GUARD::QAR(A)
  • Tries
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • B(c);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • B(c);SBLOCK::QAB(A)
      • B(c);N_GUARD::QAR(A)
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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).