MESON Chess Problem Database

Problem Display
PID: 103198 (8/1Q1p4/5n2/3R4/2b1k1Nb/8/4N1K1/8 w - - 0 1)

Maximov, Nikolai J

La Presse, 1894

8/1Q1p4/5n2/3R4/2b1k1Nb/8/4N1K1/8

#2

5 + 5

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Re5#
    • 1...Bxd5
      • 2.Qb1#
  • Tries
    • 1.Qb1+?
      • 1...Bd3
        • 2.Re5#
        • 2.Qxd3#
      • 1...Kxd5!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qd4#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Bxd5
        • 2.Qb1#
      • 1...Sxd5
        • 2.Qg6#
      • 1...Bf2
        • 2.Sxf6#

Anticipated by 121336(1880)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB(E)+R(D),DCHECK
    • B(a);N_GUARD,P_SPINB(a),SBLOCK,XR(D)::QAB(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(D)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(b);S_FLIGHT,XR(D)::S(A)
      • B(a);N_GUARD,SBLOCK,XR(D)::QAB(E)
      • S(d);OGATE,SBLOCK,XR(D)::QAB(E)
      • B(c);N_GUARD::S(C),XS(d)
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).