MESON Chess Problem Database

Problem Display
PID: 165124 (3K1Rn1/p1n2Q1b/3p4/2NPk3/1B1p1p2/7r/qN2PP2/2b1R3 w - - 0 1)

Kopyl, Valery Volodimirovich

Sachmatija, 2008

3K1Rn1/p1n2Q1b/3p4/2NPk3/1B1p1p2/7r/qN2PP2/2b1R3

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sc4#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qa1
      • 2.Sc4#
    • 1...Qa3
      • 2.Sc4#
    • 1...Qa4
      • 2.Sc4#
    • 1...Qa5
      • 2.Sc4#
    • 1...Rb3
      • 2.Sc4#
    • 1...Be4
      • 2.Sd7#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Sb5
      • 2.Qe6#
    • 1...Sxd5
      • 2.Qe6#
    • 1...Sa6
      • 2.Qe6#
    • 1...Se6+
      • 2.Qxe6#
    • 1...Sa8
      • 2.Qe6#
    • 1...Se8
      • 2.Qe6#
    • 1...d3
      • 2.Bc3#
  • Tries
    • 1.Re8+?
      • 1...Se6+
        • 2.Qxe6#
      • 1...Sxe8
        • 2.Qe6#
      • 1...Se7!
    • 1.Qh5+?
      • 1...Bf5
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...Rxh5!
  • Keys
    • 1.e4!
      • threat
        • 2.Sd7#
      • 1...Se6+
        • 2.Qxe6#
      • 1...dxc5
        • 2.Qxc7#
      • 1...dxe4 ep
        • 2.Bc3#
      • 1...fxe4 ep
        • 2.f4#
      • 1...d3
        • 2.Bc3#
      • 1...Qa4
        • 2.Sc4#
      • 1...Re3
        • 2.Qxf4#
      • 1...Be3
        • 2.Sbd3#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_GUARD::S(B)
    • Q(b);N_GUARD::S(B),XQ(b)
    • R(c);S_CUTQ(b)::S(B)
    • B(j);SBLOCK::S(F)
    • B(j);N_GUARD::QAR1(H),XB(j)
    • S(i);N_GUARD::QAR1(H)
    • S(i);N_GUARD,XP(G)::QAR1(H)
    • S(i);CHECK,N_GUARD::QAR1(H),XS(i)
    • P(d);OGATEB::B(E)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • S(i);CHECK,N_GUARD,P_SPINS(i)::QAR1(H),XS(i)
        • S(i);N_GUARD,XR(J)::QAR1(H)
      • Refutation
        • S(k);P_SPINS(k)
    • Try
      • Q(H);CHECK
      • Refutation
        • R(c);XQ(H)
  • Actual
    • P(C);
    • Threat
      • S(F)
    • Vars
      • S(i);CHECK,N_GUARD::QAR1(H),XS(i)
      • P(g);OGATEB,XS(F)::QAB(H),XS(i)
      • P(d);EP,OGATEB,P_SPINP(d),XP(C)::B(E)
      • P(e);EP,OGATE,P_SPINP(e),XP(C)::P(D)
      • P(d);OGATEB::B(E)
      • Q(b);N_GUARD::S(B)
      • R(c);S_CUTB(a)::QAB1(H),XP(e)
      • B(a);S_CUTR(c)::S(B)
      • B(j);N_GUARD::QAR1(H),XB(j)
      • S(k);N_GUARD::QAB1(H),XS(k)
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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).