MESON Chess Problem Database

Problem Display
PID: 172172 (1bQ1N3/1R6/p3N3/1ppn4/1qk5/pp6/2nPP1B1/2R4K w - - 0 1)

Tar, Gabor Zoltan

The Problemist Supplement, 2017

1bQ1N3/1R6/p3N3/1ppn4/1qk5/pp6/2nPP1B1/2R4K

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd2
      • 2.Qxc5#
    • 1...Qc3
      • 2.Qxc5#
    • 1...Qa5
      • 2.Qxc5#
    • 1...Qa4
      • 2.Qxc5#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Ba7
      • 2.Sd6#
    • 1...Sc3
      • 2.d3#
    • 1...Sc7
      • 2.Sd6#
  • Tries
    • 1.Rxc2+?
      • 1...Qc3
        • 2.Qxc5#
      • 1...Sc3
        • 2.d3#
      • 1...bxc2!
    • 1.Rxb8?
      • threat
        • 2.Sd6#
      • 1...Qxd2
        • 2.Qxc5#
      • 1...Qc3
        • 2.Qxc5#
      • 1...Qa5
        • 2.Qxc5#
      • 1...Qa4
        • 2.Qxc5#
      • 1...b2!
    • 1.Qc6?
      • threat
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Qxd2
        • 2.Qxc5#
      • 1...Qc3
        • 2.Qxc5#
      • 1...Qa5
        • 2.Qxc5#
      • 1...Qa4
        • 2.Qxc5#
      • 1...Se3
        • 2.Qe4#
      • 1...Sc3
        • 2.d3#
      • 1...Sf4
        • 2.Qe4#
      • 1...Sb6
        • 2.Qe4#
      • 1...Sc7
        • 2.Sd6#
        • 2.Qe4#
      • 1...Se7
        • 2.Qe4#
      • 1...Sf6!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Bxd5#
      • 1...Qxd2
        • 2.Qxc5#
      • 1...Qc3
        • 2.Qxc5#
      • 1...Qa5
        • 2.Qxc5#
      • 1...Qa4
        • 2.Qxc5#
      • 1...Se3
        • 2.Rd4#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Sc3
        • 2.d3#
      • 1...Sf4
        • 2.Rd4#
      • 1...Sb6
        • 2.Rd4#
      • 1...Sf6
        • 2.Rd4#
      • 1...Sc7
        • 2.Sd6#
      • 1...Se7
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(d);N_GUARD,XP(C)::QAR1(H),XP(g)
    • Q(d);N_GUARD,N_SPINS(a)::QAR1(H),XP(g)
    • Q(d);N_GUARD::QAR1(H),XP(g)
    • B(j);N_GUARD::S(I),XB(j)
    • B(j);N_GUARD::S(I)
    • S(h);N_SPINS(a),SBLOCK::P(C)
    • S(h);N_SPINP(g),S_CUTB(j)::S(I)
  • Tries
    • Try
      • R(A);CHECK,XS(a)
      • Vars
        • Q(d);P_SPINQ(d)::QAR1(H),XP(g)
        • S(h);P_SPINS(h)::P(C)
      • Refutation
        • P(c);XR(A)
    • Try
      • R(G);XB(j)
      • Threat
        • S(I)
      • Vars
        • Q(d);N_GUARD,XP(C)::QAR1(H),XP(g)
        • Q(d);N_GUARD,N_SPINS(a)::QAR1(H),XP(g)
        • Q(d);N_GUARD::QAR1(H),XP(g)
      • Refutation
        • P(c);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);N_GUARD,XP(C)::QAR1(H),XP(g)
        • Q(d);N_GUARD,N_SPINS(a)::QAR1(H),XP(g)
        • Q(d);N_GUARD::QAR1(H),XP(g)
        • S(h);OGATE::QAR2(H)
        • S(h);N_SPINS(a),SBLOCK::P(C)
      • Refutation
        • S(h);
  • Actual
    • R(G);
    • Threat
      • B(E),XS(h)
    • Vars
      • Q(d);N_GUARD,XP(C)::QAR1(H),XP(g)
      • Q(d);N_GUARD,N_SPINS(a)::QAR1(H),XP(g)
      • Q(d);N_GUARD::QAR1(H),XP(g)
      • S(h);OGATE::R1(G)
      • B(j);N_GUARD::S(I),XB(j)
      • S(h);N_SPINS(a),SBLOCK::P(C)
      • S(h);N_SPINP(g),S_CUTB(j)::S(I)
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).