MESON Chess Problem Database

Problem Display
PID: 11497 (8/B2N4/n6R/3k4/4p3/1P1r3n/1p2P3/1K1Q3R w - - 0 1)

Goulding, W

Chess, 1939

8/B2N4/n6R/3k4/4p3/1P1r3n/1p2P3/1K1Q3R

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd1+
      • 2.Rxd1#
    • 1...Rd2
      • 2.Qxd2#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Sg1
      • 2.R1h5#
    • 1...Sf2
      • 2.R1h5#
    • 1...e3
      • 2.Qxd3#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Rd6#
      • 1...Rxd1+
        • 2.Rxd1#
      • 1...e3
        • 2.Qxd3#
      • 1...Sxc5!
    • 1.Qc2?
      • threat
        • 2.Qc4#
        • 2.Qc6#
      • 1...Rd1+
        • 2.Rxd1#
        • 2.Qxd1#
      • 1...Rxb3
        • 2.Qxb3#
        • 2.Qc6#
      • 1...Sc5
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Rd4
        • 2.Qc6#
      • 1...Sb4
        • 2.Qc4#
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc4#
        • 2.Qc5#
      • 1...Rc3!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qg8#
      • 1...Rd1+
        • 2.Qxd1#
      • 1...Sxg1
        • 2.R1h5#
      • 1...e3
        • 2.Qg2#
      • 1...Sf4
        • 2.Qg5#
      • 1...Rf3
        • 2.Qd4#
      • 1...Rg3
        • 2.Qd4#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • R(b);CHECK,N_SPINR(b),OGATE,XQ(B)::R(C),XR(b)
    • R(b);OGATEB::QAR(B),XR(b)
    • R(b);OGATE::QAR1(B),XR(b)
    • S(c);OGATE::R(C)
    • P(d);N_GUARD::QAR2(B),XR(b)
  • Tries
    • Try
      • B(G);
      • Threat
        • R1(F)
      • Vars
        • R(b);CHECK,N_SPINR(b),OGATE,XQ(B)::R(C),XR(b)
        • P(d);N_GUARD::QAR2(B),XR(b)
      • Refutation
        • S(f);XB(G)
    • Try
      • Q(B);N_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAB1(B)
      • Refutation
        • R(b);
  • Actual
    • Q(B);N_PINR(b)
    • Threat
      • QAB(B)
    • Vars
      • R(b);CHECK,OGATEB::QAR(B),XR(b)
      • S(c);OGATE,XQ(B)::R(C)
      • P(d);OGATEB::QAB(B)
      • S(c);N_GUARD::QAR(B)
      • R(b);N_GUARD::QAR1(B)
      • S(c);N_GUARD::QAR(B),XS(c)
      • S(f);N_GUARD::QAR1(B),XS(f)
      • S(f);N_GUARD::QAR1(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).