MESON Chess Problem Database

Problem Display
PID: 276532 (2Kb4/4p1Q1/3Pk2p/2RpBq2/4N1P1/3N1p2/8/4R3 w - - 0 1)

Markovtsy, Vassyl Yuriovich

3rd Prize, Pat a Mat 04. TT, 2006

2Kb4/4p1Q1/3Pk2p/2RpBq2/4N1P1/3N1p2/8/4R3

#2

9 + 7

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Qg8#
    • 1...Qg6
      • 2.Sf4#
      • 2.Qxg6#
    • 1...Qh7
      • 2.Sf4#
    • 1...Qf4
      • 2.Sxf4#
    • 1...Qxe5
      • 2.Qg8#
    • 1...Qh5
      • 2.Sf4#
    • 1...Ba5
      • 2.Qxe7#
    • 1...Bb6
      • 2.Qxe7#
    • 1...Bc7
      • 2.Qxe7#
    • 1...exd6
      • 2.Qd7#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Sg5#
      • 1...Qxe4
        • 2.Qg6#
      • 1...dxe4
        • 2.gxf5#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Qf4
        • 2.Sxf4#
      • 1...Qe5
        • 2.Qg8#
      • 1...Qxg4!
    • 1.Bg3?
      • threat
        • 2.Sg5#
      • 1...Qxe4
        • 2.Qg6#
      • 1...dxe4
        • 2.gxf5#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Qf4
        • 2.Sxf4#
      • 1...Qe5
        • 2.Qg8#
      • 1...Qxg4!
    • 1.Qxh6+?
      • 1...Qg6
        • 2.Sg5#
        • 2.Qxg6#
      • 1...Qf6
        • 2.Sg5#
      • 1...Kf7+!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Sg5#
      • 1...Qxe4
        • 2.Qg6#
      • 1...Qxg4
        • 2.Sg3#
      • 1...Qxf4
        • 2.Sxf4#
      • 1...dxe4
        • 2.gxf5#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Qe5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD,XS(C)::QAB(H)
    • Q(c);N_GUARD::S(B)
    • Q(c);N_GUARD::S(B),XQ(c)
    • Q(c);N_GUARD,XB(F)::QAB(H)
    • B(g);N_GUARD::QAR1(H),XP(f)
    • P(f);OGATE,XP(G)::QAB1(H)
  • Tries
    • Try
      • B(F);
      • Threat
        • R(A)+S(C),DCHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c),XS(C)::QAR2(H)
        • P(b);P_SPINP(b),XS(C)::P(D),XQ(c)
        • Q(c);::R(A)+S(C),DCHECK,XQ(c)
        • Q(c);N_GUARD::S(B),XQ(c)
        • Q(c);N_GUARD::QAB(H)
      • Refutation
        • Q(c);XP(D)
    • Try
      • B(F);
      • Threat
        • R(A)+S(C),DCHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c),XS(C)::QAR2(H)
        • P(b);P_SPINP(b),XS(C)::P(D),XQ(c)
        • Q(c);::R(A)+S(C),DCHECK,XQ(c)
        • Q(c);N_GUARD::S(B),XQ(c)
        • Q(c);N_GUARD::QAB(H)
      • Refutation
        • Q(c);XP(D)
    • Try
      • Q(H);CHECK,XP(e)
      • Vars
        • Q(c);P_SPINQ(c)::S(C)
      • Refutation
        • K(d);CHECK,S_FLIGHT
  • Actual
    • B(F);
    • Threat
      • R(A)+S(C),DCHECK
    • Vars
      • Q(c);N_GUARD,P_SPINQ(c),XS(C)::QAR2(H)
      • Q(c);N_GUARD,XP(D)::R(A)+S(C)
      • Q(c);XB(F)::S(B),XQ(c)
      • P(b);P_SPINP(b),XS(C)::P(D),XQ(c)
      • Q(c);::R(A)+S(C),DCHECK,XQ(c)
      • Q(c);N_GUARD::QAB(H)
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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).