MESON Chess Problem Database

Problem Display
PID: 269749 (3Q4/2n1p3/N7/p2n4/1PPk2BR/5PP1/KRPP4/B4b2 w - - 0 1)

Chicco, Adriano

Norsk Sjakkblad, 1933

3Q4/2n1p3/N7/p2n4/1PPk2BR/5PP1/KRPP4/B4b2

#2

13 + 6

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc4+
      • 2.Rb3#
    • 1...Sb5
      • 2.Qxd5#
    • 1...Sxa6
      • 2.Qxd5#
    • 1...Se6
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qxd5#
    • 1...Se8
      • 2.Qxd5#
    • 1...axb4
      • 2.Rxb4#
  • Tries
    • 1.b5?
      • threat
        • 2.Rb4#
      • 1...Bxc4+
        • 2.Rb3#
      • 1...Kxc4
        • 2.Be6#
      • 1...Sxb5
        • 2.Qxd5#
      • 1...Sxa6
        • 2.Qxd5#
      • 1...Ke5!
  • Keys
    • 1.bxa5!
      • threat
        • 2.Rb4#
      • 1...Bxc4+
        • 2.Rb3#
      • 1...Kxc4
        • 2.Be6#
      • 1...Ke5
        • 2.Rb5#
      • 1...Sxa6
        • 2.Qxd5#
      • 1...Sb5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);CHECK,SBLOCK,XP(I)::B(A)+R(C)
    • S(e);N_GUARD::QAR1(M),XS(d)
    • S(e);N_GUARD,XS(L)::QAR1(M),XS(d)
    • P(c);OGATE,XP(H)::B(A)+R(C),XP(c)
  • Tries
    • Try
      • P(H);
      • Threat
        • B(A)+R(C)
      • Vars
        • B(a);CHECK,SBLOCK,XP(I)::B(A)+R(C)
        • K(b);N_GUARD,N_SPINS(d),P-FLIGHT,XP(I)::R(K)+B(J)
        • S(e);N_GUARD,XP(H)::QAR1(M),XS(d)
        • S(e);N_GUARD,XS(L)::QAR1(M),XS(d)
      • Refutation
        • K(b);N_SPINS(d),S_FLIGHT
  • Actual
    • P(H);XP(c)
    • Threat
      • B(A)+R(C)
    • Vars
      • B(a);CHECK,SBLOCK,XP(I)::B(A)+R(C)
      • K(b);N_GUARD,N_SPINS(d),P-FLIGHT,XP(I)::R(K)+B(J)
      • K(b);N_GUARD,N_SPINS(d),S_FLIGHT::B(A)+R(C)
      • S(e);N_GUARD,XS(L)::QAR1(M),XS(d)
      • S(e);N_GUARD::QAR1(M),XS(d)
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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).