MESON Chess Problem Database

Problem Display
PID: 270064 (b3r3/2B4p/2nR1p2/5p1K/4Pk2/4N2Q/8/b3n3 w - - 0 1)

Chicco, Adriano

A Voz, 1936

b3r3/2B4p/2nR1p2/5p1K/4Pk2/4N2Q/8/b3n3

#2

6 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qxf5#
    • 1...Sd4
      • 2.Re6#
    • 1...Se7
      • 2.Rd4#
    • 1...fxe4
      • 2.Rxf6#
  • Tries
    • 1.Sg2+?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Sxg2!
    • 1.Sd5+?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke5!
    • 1.Rd4+?
      • 1...Re5
        • 2.Sd5#
      • 1...Se5!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Qxf5#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Rxe4
        • 2.Qg3#
      • 1...fxe4
        • 2.Rxf6#
      • 1...Re5
        • 2.Qe3#
      • 1...Sd4
        • 2.Re6#
      • 1...Se7
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,S_FLIGHT::QAR1(B),XP(d)
    • S(e);N_GUARD,S_CUTB(a)::B(F)+R(E)
    • S(e);N_GUARD,S_CUTR(i)::B(F)+R(E)
    • P(d);SBLOCK,XP(C)::B(F)+R(E),DCHECK,XP(f)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,XP(C)::QAR1(B)
        • K(c);N_GUARD,S_FLIGHT::QAR1(B),XP(d)
      • Refutation
        • S(b);XS(A)
    • Try
      • S(A);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,XP(C)::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • R(i);P_SPINR(i)::S(A)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • S(A);
    • Threat
      • QAR1(B),XP(d)
    • Vars
      • K(c);N_GUARD,P-FLIGHT,XP(C)::QAR1(B)
      • K(c);S_FLIGHT::QAR1(B),XP(d)
      • R(i);SBLOCK,XP(C)::QAB1(B)
      • P(d);SBLOCK,XP(C)::B(F)+R(E),DCHECK,XP(f)
      • R(i);SBLOCK::QAB1(B)
      • S(e);N_GUARD,S_CUTB(a)::B(F)+R(E)
      • S(e);N_GUARD,S_CUTR(i)::B(F)+R(E)
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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).