MESON Chess Problem Database

Problem Display
PID: 263056 (2K5/3N1pN1/2p3bB/4n2R/2Bkp2R/pP1p2p1/nP6/4qQ2 w - - 0 1)

Einat, Paz

Navon, Emanuel

3rd HM., SuperProblem, 2018

2K5/3N1pN1/2p3bB/4n2R/2Bkp2R/pP1p2p1/nP6/4qQ2

#2

10 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qg1#
    • 1...Qb4
      • 2.Qg1#
    • 1...Qa5
      • 2.Qg1#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Bxh5
      • 2.Sf5#
    • 1...Sf3
      • 2.Qxd3#
    • 1...Sxd7
      • 2.Qxd3#
    • 1...f5
      • 2.Se6#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qxe5#
      • 1...Sxd7
        • 2.Qd6#
      • 1...Qa5
        • 2.Qe3#
      • 1...Sf3
        • 2.Qd6#
      • 1...Sg4
        • 2.Qd6#
      • 1...f6
        • 2.Se6#
      • 1...Sxc4!
    • 1.Qf6?
      • threat
        • 2.Qxe5#
        • 2.Qd6#
      • 1...axb2
        • 2.Qxe5#
      • 1...Qb4
        • 2.Qxe5#
      • 1...Sc3
        • 2.Qxe5#
      • 1...Sb4
        • 2.Qxe5#
      • 1...Qa5!
    • 1.Qxf7?
      • threat
        • 2.Se6#
      • 1...Bxf7
        • 2.Sf5#
      • 1...Bf5
        • 2.Sxf5#
      • 1...axb2!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxe5#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...Sxc4
        • 2.Qc5#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Qa5
        • 2.Rxe4#
      • 1...Sf3
        • 2.Qc5#
      • 1...Sg4
        • 2.Qc5#
      • 1...f6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAB(A)
    • B(j);N_GUARD,P_PINS(H)::S(I),XB(j)
    • B(j);N_GUARD,XR(F)::S(I)
    • S(h);N_GUARD::QAR1(A),XP(d)
    • S(h);N_GUARD,XS(H)::QAR1(A),XP(d)
    • P(k);N_GUARD::S(I)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XS(h)
      • Vars
        • S(h);OGATE,XS(H)::QAR2(A)
        • Q(a);N_GUARD::QAB1(A)
        • S(h);OGATE::QAR2(A)
        • P(k);N_GUARD::S(I)
      • Refutation
        • S(h);XB(D)
    • Try
      • Q(A);P_PINS(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(B)::QAB1(A),XS(h)
        • Q(a);::QAB1(A),XS(h)
        • S(b);::QAB1(A),XS(h)
      • Refutation
        • Q(a);
    • Try
      • Q(A);XP(k)
      • Threat
        • S(I)
      • Vars
        • B(j);N_GUARD,XQ(A)::S(I)
        • B(j);N_GUARD,P_PINS(H)::S(I),XB(j)
      • Refutation
        • P(c);XP(B)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XS(h)
    • Vars
      • B(j);P_PINS(H),XQ(A)::S(I),XB(j)
      • S(h);OGATE,XB(D)::QAB1(A)
      • S(h);OGATE,XS(H)::QAR(A),XS(h)
      • Q(a);N_GUARD::R1(E),XP(g)
      • S(h);OGATE::QAB1(A)
      • S(h);N_SPINP(g),OGATE::QAB1(A)
      • P(k);N_GUARD::S(I)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).