MESON Chess Problem Database

Problem Display
PID: 275946 (8/4K2B/5QP1/8/2P1R3/1nNkN3/3r4/2B5 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Pat a Mat, 2002

8/4K2B/5QP1/8/2P1R3/1nNkN3/3r4/2B5

#2

9 + 3

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qd4#
    • 1...Sxc1
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sa5
      • 2.Qd4#
    • 1...Sc5
      • 2.Qd4#
  • Tries
    • 1.Bxd2?
      • 1...Sxd2
        • 2.Qd4#
      • 1...Sa1
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Sc1
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Sd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Sa5
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Sc5
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Kxd2!
    • 1.Qd6+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kxc3!
  • Keys
    • 1.g7!
      • threat
        • 2.Re6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Rf2
        • 2.Rf4#
      • 1...Rg2
        • 2.Rg4#
      • 1...Rh2
        • 2.Rh4#
      • 1...Sc5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAR1(F)
    • S(b);N_GUARD,XB(A)::QAR1(F)
    • S(b);N_GUARD::QAR1(F),XS(b)
  • Tries
    • Try
      • B(A);XR(a)
      • Vars
        • S(b);N_GUARD,SBLOCK,XB(A)::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT,XB(A)
    • Try
      • Q(F);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(F),XS(b)
      • Refutation
        • K(c);P-FLIGHT,XS(B)
  • Actual
    • P(G);
    • Threat
      • B(I)+R(E)
    • Vars
      • S(b);N_GUARD::QAR1(F),XS(b)
      • R(a);::B(I)+R(E)
      • S(b);N_GUARD::QAR1(F)
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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).