MESON Chess Problem Database

Problem Display
PID: 17371 (2BK4/8/2P1r1P1/5k2/1P4Rp/4p2N/4P2N/Q7 w - - 0 1)

Gray, Robert

Glasgow Herald, 1946

2BK4/8/2P1r1P1/5k2/1P4Rp/4p2N/4P2N/Q7

#2

10 + 4

3713 Snap 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Sf2?
      • 1...exf2
        • 2.e4#
      • 1...h3!
    • 1.Qa2?
      • threat
        • 2.Qxe6#
      • 1...Ke5
        • 2.Qxe6#
      • 1...Kf6!
  • Keys
    • 1.Kd7!
      • 1...Rd6+
        • 2.Kxd6#
      • 1...Re7+
        • 2.Kxe7#
      • 1...Rxc6
        • 2.Kxc6#
      • 1...Rxg6
        • 2.Rf4#
      • 1...Re5
        • 2.Qf1#
      • 1...Re4
        • 2.Rg5#
      • 1...Rf6
        • 2.Qa5#
      • 1...Re8
        • 2.Kxe8#

This anticipates 144693(1980)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • P(a);OGATE,XS(D)::P(B)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XR(d)
      • Vars
        • K(c);N_SPINR(d),P-FLIGHT::QAR1(A),XR(d)
      • Refutation
        • K(c);N_SPINR(d),P-FLIGHT
  • Actual
    • K(J);N_PINR(d),P-FLIGHT
    • Vars
      • R(d);CHECK::B(I)+K(J),XR(d)
      • R(d);XP(G)::B(I)+K(J),XR(d)
      • R(d);SBLOCK,XP(H)::R1(F)
      • R(d);SBLOCK::QAR(A)
      • R(d);SBLOCK::R1(F)
      • R(d);N_GUARD,SBLOCK::QAR(A)
      • R(d);::B(I)+K(J),XR(d)
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).