MESON Chess Problem Database

Problem Display
PID: 266344 (8/2pN4/2pb3R/1pPk2p1/4R1K1/1np5/8/qb1NQ3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Kopyl, Valery Volodimirovich

4/6 Prize, Problemist Ukraini, 2017

8/2pN4/2pb3R/1pPk2p1/4R1K1/1np5/8/qb1NQ3

#2

7 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Sxc3#
    • 1...Qa3
      • 2.Sxc3#
    • 1...Qa4
      • 2.Sxc3#
    • 1...Qa6
      • 2.Sxc3#
    • 1...Qa7
      • 2.Sxc3#
    • 1...Qa8
      • 2.Sxc3#
    • 1...Sxc5
      • 2.Sf6#
  • Tries
    • 1.Rhe6?
      • threat
        • 2.Se3#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Bxc5
        • 2.Sf6#
      • 1...Be5
        • 2.R6xe5#
      • 1...Bf4!
  • Keys
    • 1.Qxc3!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Sf6#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Bxe4
        • 2.Se3#
      • 1...Bxc5
        • 2.Re5#
      • 1...Be5
        • 2.Rxe5#
      • 1...Be7
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::S(A),XP(d)
    • Q(a);N_GUARD,P_PINR(C)::S(A),XP(d)
    • S(c);SBLOCK,XP(E)::S(G)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(A)
      • Vars
        • B(b);OGATE,XR(C)::QAB1(B),XB(b)
        • B(i);SBLOCK,XP(E)::S(G)
        • B(i);N_GUARD::R1(F),XB(i)
      • Refutation
        • B(i);
  • Actual
    • Q(B);XP(d)
    • Threat
      • S(G)
    • Vars
      • K(f);S_FLIGHT,XR(C)::S(G)
      • Q(a);XQ(B)::S(A),XQ(a)
      • B(b);SBLOCK,XR(C)::S(A)
      • B(i);N_GUARD,XP(E)::R1(C)
      • B(i);N_GUARD::R1(C),XB(i)
      • B(i);N_GUARD::R1(C)
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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).