MESON Chess Problem Database

Problem Display
PID: 86811 (8/8/6R1/3N2b1/3K2kN/Q7/8/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Molot, 1970

8/8/6R1/3N2b1/3K2kN/Q7/8/8

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6+?
      • 1...Kf4
        • 2.Qd6#
        • 2.Qe3#
        • 2.Qf3#
      • 1...Kxh4!
    • 1.Rxg5+?
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kxg5!
    • 1.Qe3?
      • 1...Kh5
        • 2.Qxg5#
      • 1...Kxh4!
    • 1.Qg3+?
      • 1...Kh5
        • 2.Qxg5#
      • 1...Kxg3!
  • Keys
    • 1.Sf4!
      • 1...Kxf4
        • 2.Qf3#
      • 1...Kxh4
        • 2.Qh3#

Anticipated by 4526(1875)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT,XS(C)
    • Try
      • R(E);CHECK,XB(b)
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XR(E)
    • Try
      • Q(A);
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAR1(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT,XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_SPINB(b),OGATE,S_FLIGHT::QAR1(A),XB(b)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • S(D);
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT,XS(D)::QAR1(A)
      • K(a);N_SPINB(b),P-FLIGHT,XS(C)::QAR1(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).