MESON Chess Problem Database

Problem Display
PID: 244736 (4r3/2R2p1p/1N1nk1bR/2p1P3/3n1P2/3Q2N1/8/1K6 w - - 0 1)

Colaneri, Bruno

Problemas, 2020

4r3/2R2p1p/1N1nk1bR/2p1P3/3n1P2/3Q2N1/8/1K6

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qd5#
      • 2.Qxd6#
    • 1...S4f5
      • 2.Qd5#
    • 1...Se4
      • 2.Qc4#
    • 1...S6f5
      • 2.Qc4#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Sg7#
      • 1...S4f5
        • 2.Qd5#
      • 1...S6f5
        • 2.Qc4#
      • 1...Rg8!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg7#
      • 1...S4xf5
        • 2.Qd5#
      • 1...S6xf5
        • 2.Qc4#
      • 1...Rg8
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(a);N_PINQ(B)::QAB1(B)
    • S(c);N_PINQ(B)::QAB(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(a);N_PINQ(B),SBLOCK::QAB1(B)
        • S(c);N_PINQ(B),SBLOCK::QAB(B)
      • Refutation
        • R(h);
  • Actual
    • S(C);N_SPINQ(B)
    • Threat
      • S(C)
    • Vars
      • S(a);OGATE,SBLOCK,XS(C)::QAB1(B)
      • S(c);N_GUARD,SBLOCK,XS(C)::QAB(B)
      • R(h);N_GUARD::R1(H)
HTML5 logo

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).