MESON Chess Problem Database

Problem Display
PID: 154305 (3K4/8/3Qp2p/1p2p3/2N1k1P1/2p4r/B1p5/2B3Nb w - - 0 1)

Thomson, Robert Gavin

Hobbies, 1905

3K4/8/3Qp2p/1p2p3/2N1k1P1/2p4r/B1p5/2B3Nb

#2

7 + 9

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Tries
    • 1.Sb2?
      • threat
        • 2.Qb4#
      • 1...Rd3
        • 2.Qxd3#
      • 1...b4
        • 2.Qxb4#
      • 1...cxb2!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Sb2#
      • 1...Rd3+
        • 2.Sd6#
      • 1...Kd3
        • 2.Sxe5#
      • 1...Kd4
        • 2.Sb2#
      • 1...Kd5
        • 2.Sa5#
      • 1...bxc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR(F)
      • Vars
        • R(d);N_GUARD,P_PINQ(F)::QAB1(F),XR(d)
        • P(f);::QAR(F),XP(f)
      • Refutation
        • P(c);XS(D)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(D)
    • Vars
      • R(d);CHECK,SBLOCK::QAR(F)+S(D),DCHECK
      • K(e);S_FLIGHT::S(D),XP(g)
      • K(e);P-FLIGHT::QAR(F)+S(D)
      • K(e);S_FLIGHT::B(C)+S(D)
      • P(f);OGATE,P_SPINP(f),XS(D)::QAR2(F),XP(f)
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).