MESON Chess Problem Database

Problem Display
PID: 106096 (8/8/8/3p4/Q1p5/Kp6/3N4/k7 w - - 0 1)

Kargapolov, Aleksey Petrovich

Slovensky Dennik, 1994

8/8/8/3p4/Q1p5/Kp6/3N4/k7

#2

3 + 4

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Kb4#
    • 1...c3
      • 2.Kxb3#
  • Tries
    • 1.Qxb3?
      • threat
        • 2.Qd1#
        • 2.Qa2#
        • 2.Qb1#
        • 2.Qb2#
        • 2.Qc3#
      • 1...c3
        • 2.Qd1#
        • 2.Qa2#
        • 2.Qb1#
        • 2.Qxc3#
      • 1...d4
        • 2.Qd1#
        • 2.Qa2#
        • 2.Qb1#
        • 2.Qb2#
      • 1...cxb3!
    • 1.Qb5?
      • 1...b2
        • 2.Qxb2#
      • 1...c3
        • 2.Qf1#
      • 1...d4!
    • 1.Qxc4?
      • threat
        • 2.Qf1#
        • 2.Qc1#
      • 1...b2
        • 2.Qa2#
      • 1...dxc4!
    • 1.Qa5?
      • 1...b2
        • 2.Kb4#
      • 1...c3
        • 2.Kxb3#
      • 1...d4!
    • 1.Qa6?
      • 1...b2
        • 2.Kb4#
      • 1...c3
        • 2.Kxb3#
        • 2.Qf1#
      • 1...d4!
    • 1.Qa7?
      • threat
        • 2.Qg1#
      • 1...b2
        • 2.Kb4#
      • 1...d4!
  • Keys
    • 1.Qa8!
      • 1...b2
        • 2.Kb4#
      • 1...c3
        • 2.Kxb3#
      • 1...d4
        • 2.Qh1#

Anticipated by 6332(1928)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR(C)+K(B)
    • P(c);::QAR(C)+K(B),XP(b)
  • Tries
    • Try
      • Q(C);XP(b)
      • Threat
        • DUALS(5)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Vars
        • P(b);OGATE::QAB1(C),XP(b)
        • P(c);OGATE::QAR(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATE::QAR1(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR(C)+K(B)
        • P(c);::QAR(C)+K(B),XP(b)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR(C)+K(B)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • P(b);SBLOCK::QAR(C)+K(B)
      • Refutation
        • P(d);
  • Actual
    • Q(C);
    • Vars
      • P(b);SBLOCK::QAR(C)+K(B)
      • P(c);::QAR(C)+K(B),XP(b)
      • P(d);OGATE::QAB1(C)
HTML5 logo

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).