MESON Chess Problem Database

Problem Display
PID: 32832 (Q6K/4N3/3p4/2pBk1B1/8/8/1R5N/7q w - - 0 1)

Thompson, Theophilus Augustus

Chess Problems by Theophilus A. Thompson, 1873

Q6K/4N3/3p4/2pBk1B1/8/8/1R5N/7q

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sxf3#
    • 1...Qxd5
      • 2.Qxd5#
    • 1...Qa1
      • 2.Sf3#
    • 1...Qb1
      • 2.Sf3#
    • 1...Qc1
      • 2.Sf3#
    • 1...Qe1
      • 2.Sf3#
    • 1...Qg1
      • 2.Sf3#
  • Tries
    • 1.Re2+?
      • 1...Qe4
        • 2.Sf3#
        • 2.Rxe4#
        • 2.Qa1#
      • 1...Kd4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Rb1#
        • 2.Re2#
      • 1...Qxh2+
        • 2.Rxh2#
      • 1...Kd4
        • 2.Rd2#
      • 1...Qxd5
        • 2.Re2#
      • 1...Qxa1
        • 2.Sf3#
      • 1...Qg2
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rxg2#
      • 1...Qf3
        • 2.Sxf3#
        • 2.Re2#
      • 1...Qe4
        • 2.Re2#
      • 1...Qb1
        • 2.Sf3#
        • 2.Rxb1#
        • 2.Re2#
      • 1...Qc1
        • 2.Sf3#
        • 2.Re2#
      • 1...Qd1
        • 2.Re2#
      • 1...Qe1
        • 2.Sf3#
        • 2.Re2#
      • 1...Qg1
        • 2.Sf3#
        • 2.Re2#
      • 1...c4
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_PINS(B)::S(B),XQ(a)
    • Q(a);N_PINS(B),OGATE,XB(C)::QAR1(F),XQ(a)
    • Q(a);N_PINS(B)::S(B)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);CHECK,OGATE,XS(B)::QAB(F)+R(A),XQ(a)
      • K(c);S_FLIGHT::QAB(F)+R(A),DCHECK
      • Q(a);N_PINS(B),XB(C)::QAB(F)+R(A),DCHECK
      • Q(a);N_PINS(B),XQ(F)::S(B)
      • Q(a);N_PINS(B)::QAB(F)+R(A)
      • Q(a);N_PINS(B)::QAB(F)+R(A),DCHECK
      • P(b);::QAB(F)+R(A),DCHECK
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).