MESON Chess Problem Database

Problem Display
PID: 268918 (6b1/2N4N/5nR1/2Ppkr2/Rb6/2P2P2/3B2Q1/4K2n w - - 0 1)

Kopyl, Valery Volodimirovich

Problemist Ukraini, 2023

6b1/2N4N/5nR1/2Ppkr2/Rb6/2P2P2/3B2Q1/4K2n

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Rxg5#
      • 2.Qxg5#
    • 1...Sh5
      • 2.Qe2#
    • 1...Sd7
      • 2.Qe2#
    • 1...Sxh7
      • 2.Qe2#
    • 1...Se8
      • 2.Qe2#
  • Tries
    • 1.Rg5?
      • threat
        • 2.f4#
      • 1...Rxg5
        • 2.Qxg5#
      • 1...Bxc5
        • 2.Bf4#
      • 1...Sh5
        • 2.Qe2#
      • 1...Sxh7!
    • 1.Qh2+?
      • 1...Rf4
        • 2.Rg5#
        • 2.Qxf4#
      • 1...Sg3!
    • 1.Qg3+?
      • 1...Rf4
        • 2.Rg5#
        • 2.Qxf4#
      • 1...Sxg3!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Bf4#
      • 1...Rxg5
        • 2.Rxg5#
      • 1...Bxc3
        • 2.f4#
      • 1...Sh5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD::QAR(C)
    • S(f);N_GUARD,XS(J)::QAR(C)
  • Tries
    • Try
      • R(H);P_PINR(e)
      • Threat
        • P(E)
      • Vars
        • R(e);N_SPINR(e),OGATE,XR(H)::QAR2(C),XR(e)
        • B(b);XP(G)::B(B)
        • S(f);N_GUARD::QAR(C)
      • Refutation
        • S(f);XS(J)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);P_PINR(e)
    • Threat
      • B(B)
    • Vars
      • R(e);N_SPINR(e),OGATE,XQ(C)::R(H),XR(e)
      • B(b);P_PINB(B),XP(D)::P(E)
      • S(f);N_GUARD::QAR2(C)
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).