MESON Chess Problem Database

Problem Display
PID: 199362 (5N2/p2R4/2k4K/8/8/7R/br2BB2/Qr6 w - - 0 1)

Moen, Kabe

The Problemist Supplement, 2019

5N2/p2R4/2k4K/8/8/7R/br2BB2/Qr6

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Qf6#
    • 1...Bb3
      • 2.Qa6#
  • Tries
    • 1.Qxa2?
      • threat
        • 2.Rc3#
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qe6#
      • 1...Rxa2
        • 2.Rc3#
      • 1...Rxe2
        • 2.Qc4#
        • 2.Qd5#
      • 1...Rc1
        • 2.Qd5#
        • 2.Qe6#
      • 1...Rd1
        • 2.Rc3#
        • 2.Qc4#
      • 1...Rh1
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qe6#
      • 1...Rc2
        • 2.Qd5#
        • 2.Qe6#
        • 2.Qxc2#
      • 1...Rd2
        • 2.Rc3#
        • 2.Qc4#
      • 1...Rb4
        • 2.Qd5#
        • 2.Qe6#
      • 1...Rb5
        • 2.Qe6#
      • 1...Rb3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Bf3#
        • 2.Bb5#
      • 1...Rh1+
        • 2.Qxh1#
      • 1...Rxe2
        • 2.Qc3#
      • 1...Rxb3
        • 2.Qf6#
      • 1...Bxb3
        • 2.Qa6#
      • 1...Rd1
        • 2.Bb5#
      • 1...Re1
        • 2.Bb5#
      • 1...Rd2
        • 2.Bb5#
        • 2.Qc3#
      • 1...a6
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::QAR(A)
    • B(b);OGATE::QAR2(A)
  • Tries
    • Try
      • Q(A);XB(b)
      • Threat
        • DUALS(4)
      • Vars
        • R(c);XQ(A)::R(D)
        • R(c);::QAR2(A)
      • Refutation
        • R(c);
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);CHECK,OGATE::QAB(A),XR(a)
      • R(c);OGATE,XB(B)::QAR(A)
      • R(c);OGATE,XR(D)::QAR(A)
      • B(b);OGATE,XR(D)::QAR2(A)
      • R(a);::B(B)
      • P(e);::B(B)
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).