MESON Chess Problem Database

Problem Display
PID: 105390 (8/8/7R/4B3/3Pk3/Q7/8/5K2 w - - 0 1)

Pypa, Volodimir Iosifovich

Kudesnik, 1991

8/8/7R/4B3/3Pk3/Q7/8/5K2

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Rc6?
      • 1...Kd5
        • 2.Qf3#
      • 1...Kf5!
    • 1.Rg6?
      • 1...Kf5
        • 2.Qd3#
      • 1...Kd5!
    • 1.Qc1?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf5
        • 2.Qf4#
      • 1...Kd3!
    • 1.Qc3?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf5!
    • 1.Qd3+?
      • 1...Kd5
        • 2.Rd6#
      • 1...Kxd3!
    • 1.Qg3?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qg6#
      • 1...Kd5!
  • Keys
    • 1.Qa6!
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf5
        • 2.Qg6#

Anticipated by 31378(1883), 103452(1888), 193658(1915), 206705(1925)

This anticipates 99408(1995), 199902(2017), 217416(2020)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
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).