MESON Chess Problem Database

Problem Display
PID: 257482 (3Q3K/2r1p1B1/1b1Nk1P1/2R5/6P1/8/4r1b1/8 w - - 0 1)

Magini, Fabio

Best Problems, 2022

3Q3K/2r1p1B1/1b1Nk1P1/2R5/6P1/8/4r1b1/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Re5#
    • 1...Rb2
      • 2.Re5#
    • 1...Rc2
      • 2.Re5#
    • 1...Rd2
      • 2.Re5#
    • 1...Rf2
      • 2.Re5#
    • 1...Re5
      • 2.Rxe5#
    • 1...Be4
      • 2.Re5#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sg5#
        • 2.Re5#
        • 2.Qd5#
      • 1...Rxe4
        • 2.Qd5#
      • 1...Bxe4
        • 2.Re5#
      • 1...Bxc5
        • 2.Sg5#
      • 1...Rd2
        • 2.Sg5#
        • 2.Re5#
      • 1...Rd7
        • 2.Re5#
        • 2.Qg8#
      • 1...Rc8
        • 2.Sg5#
        • 2.Re5#
        • 2.Qxc8#
      • 1...Rxc5!
    • 1.Sf5?
      • threat
        • 2.Sd4#
      • 1...Rd2
        • 2.Re5#
      • 1...Re4
        • 2.Qd5#
      • 1...Rd7
        • 2.Qg8#
      • 1...Bxc5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sd4#
      • 1...Bxc5
        • 2.Sxc7#
      • 1...Rd2
        • 2.Re5#
      • 1...Re4
        • 2.Qd5#
      • 1...Rd7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::R1(B)
    • R(a);N_GUARD::R1(B),XR(a)
    • B(b);S_CUTR(a)::R1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XS(C)::QAB1(F)
        • B(b);XS(C)::R1(B)
        • B(c);XR(B)::S(C)
      • Refutation
        • R(e);XR(B)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • R(a);N_GUARD::R1(B)
        • R(a);S_CUTB(b)::QAB1(F)
        • R(e);SBLOCK::QAB(F)
      • Refutation
        • B(c);XR(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • B(c);N_GUARD,XR(B)::S(C),XR(e)
      • R(a);N_GUARD::R1(B)
      • R(a);S_CUTB(b)::QAB1(F)
      • R(e);SBLOCK::QAB(F)
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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).