MESON Chess Problem Database

Problem Display
PID: 276974 (2B5/3pKn2/2p5/6p1/1Q1P1k1r/3PN1p1/3N1qP1/2B1RR2 w - - 0 1)

Gomez, Luis

Peris-120 MT (Problemas), 2024

2B5/3pKn2/2p5/6p1/1Q1P1k1r/3PN1p1/3N1qP1/2B1RR2

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Rxf3#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sh6
      • 2.Qd6#
    • 1...Sd8
      • 2.Qd6#
    • 1...Sh8
      • 2.Qd6#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qf5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qxd6#
        • 2.Qe5#
      • 1...Sh6
        • 2.Qd6#
        • 2.Qe5#
      • 1...d5!
    • 1.Qd6+?
      • 1...Se5
        • 2.Qxe5#
        • 2.Qf6#
      • 1...Sxd6!
    • 1.Qb8+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...d6!
  • Keys
    • 1.Sf3!
      • threat
        • 2.d5#
      • 1...Qxe3+
        • 2.Se5#
      • 1...Qxe1
        • 2.Sxe1#
      • 1...Qxf3
        • 2.Rxf3#
      • 1...Qa2
        • 2.Sd2#
      • 1...Qb2
        • 2.Sd2#
      • 1...Qc2
        • 2.Sd2#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Se5
        • 2.dxe5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...c5
        • 2.dxc5#
      • 1...d5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • Q(a);OGATE::R1(C),XQ(a)
    • S(h);N_GUARD::QAB(H),XS(h)
    • S(h);N_GUARD::QAB(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • S(h);N_GUARD::QAB1(H),XS(h)
      • Refutation
        • P(g);
    • Try
      • Q(H);CHECK
      • Refutation
        • S(h);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB1(H),XS(h)
        • S(h);N_GUARD,P_SPINS(h)::QAB(H),XS(h)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • S(D);N_PINQ(a)
    • Threat
      • QAR(H)+P(I)
    • Vars
      • Q(a);CHECK,P_SPINQ(a),XS(G)::R(C)+S(D)
      • Q(a);P_PINS(G),XR(B)::R(C)+S(D),XQ(a)
      • Q(a);OGATE,P_SPINQ(a),XS(D)::R1(C),XQ(a)
      • Q(a);::R(C)+S(D)
      • Q(a);::R(C)+S(D),XQ(a)
      • S(h);OGATE::QAR(H)+P(I),XS(h)
      • S(h);N_GUARD::QAB(H),XS(h)
      • P(f);OGATE::QAR(H)+P(I),XP(f)
      • P(g);::B(A)+S(G),DCHECK,XP(g)
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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).