MESON Chess Problem Database

Problem Display
PID: 166395 (5q2/1r3B1R/N1p1r1p1/R1nk1p2/p2p1B2/Kb1Q1P2/1N3b1n/8 w - - 0 1)

Magini, Fabio

Best Problems, 2017

5q2/1r3B1R/N1p1r1p1/R1nk1p2/p2p1B2/Kb1Q1P2/1N3b1n/8

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Rxc5#
    • 1...Qg7
      • 2.Rxc5#
    • 1...Qxf7
      • 2.Rxc5#
    • 1...Qa8
      • 2.Rxc5#
    • 1...Qb8
      • 2.Rxc5#
    • 1...Qc8
      • 2.Rxc5#
    • 1...Qd8
      • 2.Rxc5#
    • 1...Qe8
      • 2.Rxc5#
    • 1...Qg8
      • 2.Rxc5#
    • 1...Qh8
      • 2.Rxc5#
    • 1...Rb4
      • 2.Sxb4#
      • 2.Sc7#
    • 1...Rb5
      • 2.Sc7#
    • 1...Rb6
      • 2.Sc7#
    • 1...Ra7
      • 2.Sb4#
    • 1...Rc7
      • 2.Sb4#
      • 2.Sxc7#
    • 1...Rd7
      • 2.Sb4#
    • 1...Re7
      • 2.Sb4#
      • 2.Rxc5#
    • 1...Rxf7
      • 2.Sb4#
    • 1...Rb8
      • 2.Sc7#
    • 1...Bd1
      • 2.Qc4#
    • 1...Bc2
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Sxf3
      • 2.Qxf3#
    • 1...g5
      • 2.Qxf5#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sc3#
      • 1...Be1
        • 2.Se3#
      • 1...Bxd1!
    • 1.Rb5?
      • threat
        • 2.Sb4#
      • 1...Rxb5
        • 2.Sc7#
      • 1...Be1!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Qe4#
      • 1...Qxf7
        • 2.Rxc5#
      • 1...Rxf7
        • 2.Sb4#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...gxh5
        • 2.Qxf5#
      • 1...Rb5
        • 2.Sc7#
      • 1...Bc2
        • 2.Qc4#
      • 1...g5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 15
  • Sets
    • Q(m);N_GUARD::R1(F),XS(f)
    • Q(m);N_GUARD,N_SPINR(j),XB(H)::R1(F),XS(f)
    • R(l);N_GUARD,N_SPINS(f)::S(G)
    • R(l);N_GUARD::S(G)
    • R(l);N_GUARD,N_SPINR(j),XB(H)::S(G)
    • B(c);N_GUARD::QAB1(C)
    • B(c);N_GUARD::QAB1(C),XB(c)
    • S(b);OGATE,XP(D)::QAB(C),XS(b)
    • P(k);N_GUARD::QAR2(C),XP(h)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(a);N_GUARD::S(A)
      • Refutation
        • B(c);XS(A)
    • Try
      • R(F);
      • Threat
        • S(G)
      • Vars
        • R(l);N_GUARD,N_SPINS(f),XR(F)::S(G)
      • Refutation
        • B(a);
  • Actual
    • R(I);
    • Threat
      • QAB1(C)
    • Vars
      • Q(m);N_GUARD,N_SPINR(j),XB(H)::R1(F),XS(f)
      • R(l);N_GUARD,N_SPINR(j),XB(H)::S(G)
      • S(b);OGATE,XP(D)::QAB(C),XS(b)
      • P(k);N_GUARD,XR(I)::QAR2(C),XP(h)
      • R(l);N_GUARD,N_SPINS(f)::S(G)
      • B(c);N_GUARD::QAB1(C)
      • P(k);N_GUARD::QAR2(C),XP(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).