MESON Chess Problem Database

Problem Display
PID: 243097 (B7/K1Q1N1n1/4P2b/8/pN1k4/r7/1P5R/2n3r1 w - - 0 1)

Armeni, Alberto

Schach, 2008

B7/K1Q1N1n1/4P2b/8/pN1k4/r7/1P5R/2n3r1

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qe5#
    • 1...Ra1
      • 2.Qc3#
    • 1...Ra2
      • 2.Qc3#
    • 1...Rc3
      • 2.Qxc3#
    • 1...Rd3
      • 2.Sc2#
    • 1...Sb3
      • 2.Qc3#
    • 1...Sd3
      • 2.Sc2#
    • 1...Sf5
      • 2.Sxf5#
    • 1...Sh5
      • 2.Sf5#
    • 1...Sxe6
      • 2.Sf5#
    • 1...Se8
      • 2.Sf5#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Sxe6
        • 2.Sf5#
      • 1...Rg5
        • 2.Qf4#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Sb3
        • 2.Qc3#
      • 1...Sd3!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Bd5#
      • 1...Ke5!
    • 1.Qd6+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Qe5#
        • 2.Qd2#
      • 1...Kc4!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Sxe6
        • 2.Sf5#
      • 1...Rg5
        • 2.Qf4#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Sb3
        • 2.Qc3#
      • 1...Sd3
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • K(e);S_FLIGHT::QAR2(F)
    • R(c);N_GUARD::QAB1(F)
    • R(c);N_GUARD::QAB1(F),XR(c)
    • R(c);SBLOCK::S(C)
    • S(a);S_CUTR(c)::QAB1(F)
    • S(a);SBLOCK::S(C)
    • S(g);N_GUARD::S(G),XS(g)
    • S(g);N_GUARD::S(G)
    • S(g);N_GUARD,XP(D)::S(G)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(F)
      • Vars
        • K(e);S_FLIGHT::QAR2(F)
        • S(g);N_GUARD,XP(D)::S(G)
        • R(b);S_CUTB(f)::QAR2(F)
        • R(c);N_GUARD::QAB1(F),XR(c)
        • S(a);S_CUTR(c)::QAB1(F)
      • Refutation
        • S(a);
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);P-FLIGHT::B(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • QAB1(F)
    • Vars
      • K(e);S_FLIGHT::QAR2(F)
      • S(g);N_GUARD,XP(D)::S(G)
      • R(b);S_CUTB(f)::QAR2(F)
      • R(c);N_GUARD::QAB1(F),XR(c)
      • S(a);S_CUTR(c)::QAB1(F)
      • S(a);SBLOCK::S(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).