MESON Chess Problem Database

Problem Display
PID: 151365 (4B2Q/6BP/1N1k1p2/1K6/3N4/8/3R4/8 w - - 0 1)

Grassano, Carlos A

Die Schwalbe, 2013

4B2Q/6BP/1N1k1p2/1K6/3N4/8/3R4/8

#2

8 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6+?
      • 1...Kc7
        • 2.Rd7#
      • 1...Ke6!
    • 1.Sc4+?
      • 1...Kd5
        • 2.Bc6#
      • 1...Ke7
        • 2.Bxf6#
      • 1...Kc7!
    • 1.Bg6?
      • 1...Ke5
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...f5
        • 2.Qd8#
      • 1...Kc7!
  • Keys
    • 1.Bc6!
      • 1...Ke5
        • 2.Qb8#
      • 1...Kc7
        • 2.Se6#
      • 1...Ke7
        • 2.Qf8#
      • 1...f5
        • 2.Qd8#

There are these versions: 154904, 155921

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::B(G)
        • K(a);S_FLIGHT::B(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB(H)
        • K(a);S_FLIGHT::QAB1(H)
        • P(b);::QAR2(H)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(G);
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT::QAB(H)
      • K(a);S_FLIGHT::S(B)
      • K(a);S_FLIGHT::QAB1(H)
      • P(b);::QAR2(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).