MESON Chess Problem Database

Problem Display
PID: 182322 (2Q5/5p2/1n1pb3/5Rp1/n3k1P1/1P1NP3/5K2/8 w - - 0 1)

Sastri, SN

San Francisco Chronicle, 1906

2Q5/5p2/1n1pb3/5Rp1/n3k1P1/1P1NP3/5K2/8

#2

7 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.Qxf5#
    • 1...Sd5
      • 2.Qc4#
  • Tries
    • 1.Rf4+?
      • 1...Kxd3
        • 2.Rd4#
      • 1...Kd5
        • 2.Rd4#
        • 2.Qb7#
      • 1...gxf4!
    • 1.Qc2?
      • threat
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sc5#
      • 1...Bxb3
        • 2.Sc5#
      • 1...Bc4
        • 2.Sc5#
      • 1...Sb2
        • 2.Sxb2#
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Bxf5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Bxd5
        • 2.Qf5#
      • 1...Sxd5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(f);OGATE,XR(F)::QAB1(G),XB(f)
    • S(d);N_GUARD,S_CUTB(f)::QAR2(G)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(C)::R1(F)
      • Refutation
        • P(c);XR(F)
    • Try
      • Q(G);
      • Threat
        • DUALS(6)
      • Vars
        • B(f);XP(B)::QAB(G)+S(C),DCHECK
        • B(f);::QAB(G)+S(C),DCHECK
        • S(a);::QAB(G)+S(C),DCHECK,XS(a)
      • Refutation
        • B(f);XR(F)
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(F)::QAB(G)
      • B(f);OGATE,XR(F)::QAB1(G)
      • S(d);N_GUARD,XR(F)::QAR2(G)
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).