MESON Chess Problem Database

Problem Display
PID: 266420 (8/4rq2/bN1R2Q1/3PkpNn/1BP1P3/r1PpP1P1/p2K3b/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Kopyl, Valery Volodimirovich

Sp. Prize, Pilchenko-60 JT (Uralski Problemist), 2012-2013

8/4rq2/bN1R2Q1/3PkpNn/1BP1P3/r1PpP1P1/p2K3b/8

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Rxd5#
      • 2.Qxf5#
    • 1...Qe8
      • 2.Qxf5#
    • 1...Qg8
      • 2.Qxf5#
    • 1...Qg7
      • 2.Qxf5#
    • 1...Rxc3
      • 2.Bxc3#
    • 1...Bxc4
      • 2.Sxc4#
    • 1...Sf4
      • 2.exf4#
    • 1...Sf6
      • 2.Qxf5#
    • 1...fxe4
      • 2.Qxe4#
    • 1...f4
      • 2.Sf3#
  • Tries
    • 1.Sxf7+?
      • 1...Rxf7
        • 2.Re6#
        • 2.Qe6#
      • 1...Kxe4!
  • Keys
    • 1.Kxd3!
      • threat
        • 2.Sf3#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Rxc3+
        • 2.Bxc3#
      • 1...Bxc4+
        • 2.Sxc4#
      • 1...Sf4+
        • 2.exf4#
      • 1...fxe4+
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(j);N_GUARD::QAR1(L),XP(f)
    • R(c);OGATE,XP(B)::B(E),XR(c)
    • B(h);XP(F)::S(J),XB(h)
    • S(g);OGATE::P(C),XS(g)
    • S(g);S_CUTQ(j)::QAR1(L),XP(f)
    • P(f);OGATE,XP(G)::QAR1(L),XP(f)
    • P(f);::S(I)
  • Tries
    • Try
      • S(I);CHECK,XQ(j)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(f),XP(G)
  • Actual
    • K(A);P-FLIGHT,P_SPINP(B),XP(d)
    • Threat
      • S(I)
    • Vars
      • Q(j);CHECK,OGATE,XP(H)::R1(K),XQ(j)
      • R(c);CHECK,OGATE,P_PINP(F),XP(B)::B(E),XR(c)
      • B(h);CHECK,XP(F)::S(J),XB(h)
      • S(g);CHECK,OGATE::P(C),XS(g)
      • P(f);CHECK,OGATE,XP(G)::QAR1(L),XP(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).