MESON Chess Problem Database

Problem Display
PID: 103960 (8/Q7/1B6/5K2/2k2p2/5p2/8/3B4 w - - 0 1)

Shakhnazaryan, Albert Serapionovic

Kudesnik, 1993

8/Q7/1B6/5K2/2k2p2/5p2/8/3B4

#2

4 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bg1?
      • 1...Kc3
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb4
        • 2.Qc5#
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5
        • 2.Qc5#
      • 1...f2!
    • 1.Qa3?
      • threat
        • 2.Qb3#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kb5!
    • 1.Qa4+?
      • 1...Kc3
        • 2.Qd4#
      • 1...Kd3
        • 2.Qc2#
        • 2.Qd4#
      • 1...Kd5!
    • 1.Qc7+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kb4
        • 2.Qc5#
      • 1...Kd5
        • 2.Bb3#
        • 2.Bxf3#
        • 2.Qc5#
      • 1...Kb5!
  • Keys
    • 1.Bf2!
      • 1...Kc3
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb4
        • 2.Qc5#
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5
        • 2.Qc5#

Anticipated by 2392(0000), 120940(1877), 9327(1880), 222385(1884), 222932(1885), 184881(1908), 189438(1911), 189685(1912), 96980(1943), 76834(1947), 18925(1959)

This anticipates 7857(1994)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • K(b);P-FLIGHT::QAB1(D)
        • K(b);S_FLIGHT::QAR1(D)
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • P(a);
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(D)
        • K(b);P-FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(b);P-FLIGHT::QAB1(D)
      • K(b);S_FLIGHT::QAR1(D)
      • K(b);S_FLIGHT::QAB1(D)
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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).