MESON Chess Problem Database

Problem Display
PID: 80626 (5KQR/8/8/8/5p2/1B3r2/N1R1pP2/3k4 w - - 0 1)

Guidelli, Giorgio

4th HM., Good Companions (March), 1920

5KQR/8/8/8/5p2/1B3r2/N1R1pP2/3k4

#2

7 + 4

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qg1#
  • Tries
    • 1.Sc3+?
      • 1...Ke1
        • 2.Qg1#
      • 1...Rxc3!
    • 1.Rb2+?
      • 1...Ke1
        • 2.Qg1#
      • 1...Rxb3!
  • Keys
    • 1.Qg4!
      • 1...Ke1
        • 2.Qg1#
      • 1...Rxf2
        • 2.Rxe2#
      • 1...Rxb3
        • 2.Qxe2#
      • 1...e1Q
        • 2.Rb2#
      • 1...e1S
        • 2.Sc3#
      • 1...e1B
        • 2.Rb2#
        • 2.Qxf3#
      • 1...e1R
        • 2.Sc3#
        • 2.Rb2#
      • 1...Rc3
        • 2.Rh1#
        • 2.Qxe2#
      • 1...Rd3
        • 2.Rh1#
        • 2.Qxe2#
      • 1...Re3
        • 2.Rh1#
      • 1...Rg3
        • 2.Qxe2#
      • 1...Rh3
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(F)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • R(c);XS(A)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • R(c);XB(D)
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT::QAR2(F)
      • R(c);N_GUARD,P_SPINP(b),XP(C)::B(D)+R(B),XP(b)
      • R(c);OGATE,P_SPINP(b),XB(D)::QAB1(F),XP(b)
      • P(b);P_SPINR(c),SBLOCK::B(D)+R(B)
      • P(b);P_SPINR(c),SBLOCK::S(A)
      • R(c);P_SPINP(b)::R(G)
      • R(c);OGATE,P_SPINP(b)::QAB1(F),XP(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).