MESON Chess Problem Database

Problem Display
PID: 257504 (1b6/4nN2/R7/2Bk4/R5K1/3r1p2/b7/2Q5 w - - 0 1)

Svitek, Miroslav

Phenix, 2021

1b6/4nN2/R7/2Bk4/R5K1/3r1p2/b7/2Q5

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Rd4#
    • 1...Rb3
      • 2.Rd4#
      • 2.Qc4#
    • 1...Re3
      • 2.Rd4#
    • 1...Rd4+
      • 2.Rxd4#
    • 1...Bb1
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Ba7
      • 2.Rd6#
  • Tries
    • 1.Qg5+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Sf5!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Qc5#
      • 1...Rd4+
        • 2.Rxd4#
      • 1...Bxa7
        • 2.Rd6#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Rc3
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::R1(B)
    • R(b);CHECK,N_GUARD::R1(B),XR(b)
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(f);N_GUARD::R1(E),XB(f)
    • B(f);N_GUARD::R1(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(A),XB(f)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • B(D);
    • Threat
      • QAR1(A)
    • Vars
      • R(b);CHECK,N_GUARD::R1(B),XR(b)
      • B(f);N_GUARD,XB(D)::R1(E)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(f);N_GUARD::R1(E),XB(f)
      • S(e);N_GUARD::QAB1(A),XS(e)
      • R(b);N_GUARD::R1(B)
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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).