MESON Chess Problem Database

Problem Display
PID: 81638 (4B3/6K1/2pNk3/2r2R2/1Q6/2p5/2N5/8 w - - 0 1)

Easter, Norris

Grantham Journal, 1930

4B3/6K1/2pNk3/2r2R2/1Q6/2p5/2N5/8

#2

6 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6+?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qe4#
      • 1...Ke5
        • 2.Qxc5#
        • 2.Qd4#
        • 2.Qe4#
      • 1...Ke7!
    • 1.Qd4?
      • threat
        • 2.Qf6#
      • 1...Ke7
        • 2.Qf6#
      • 1...Re5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Rxf5!
    • 1.Qe4+?
      • 1...Re5
        • 2.Qxe5#
      • 1...Kxd6!
  • Keys
    • 1.Sf7!
      • 1...Kxf5
        • 2.Bd7#
      • 1...Ke7
        • 2.Re5#
      • 1...Rxf5
        • 2.Qd6#
      • 1...Rc4
        • 2.Re5#
      • 1...Ra5
        • 2.Sd4#
      • 1...Rb5
        • 2.Sd4#
      • 1...Rd5
        • 2.Rf6#
      • 1...Re5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(d);P-FLIGHT::QAB1(B)
      • Refutation
        • R(b);XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(B),XR(b)
      • Refutation
        • K(d);P-FLIGHT,XS(D)
  • Actual
    • S(D);
    • Vars
      • K(d);S_FLIGHT,XR(C)::B(F)
      • K(d);P-FLIGHT,P_SPINR(b)::R(C)
      • R(b);OGATE,SBLOCK,XR(C)::QAR1(B)
      • R(b);N_GUARD::R1(C)
      • R(b);::S(A)
      • R(b);SBLOCK::R1(C)
      • R(b);N_GUARD::R1(C),XR(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).