MESON Chess Problem Database

Problem Display
PID: 140270 (5R1K/B6b/2Q5/2npp3/4k3/R6N/2r1r3/3N4 w - - 0 1)

Kosovac, Adi

StrateGems, 2003

5R1K/B6b/2Q5/2npp3/4k3/R6N/2r1r3/3N4

#2

7 + 7

5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Sg5#
    • 1...Sa4
      • 2.Sg5#
    • 1...Sa6
      • 2.Sg5#
    • 1...Sb7
      • 2.Sg5#
    • 1...Sd7
      • 2.Sg5#
  • Tries
    • 1.Qa4+?
      • 1...Sxa4
        • 2.Sg5#
      • 1...d4
        • 2.Qc6#
      • 1...Rc4!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qxd5#
      • 1...Kxd3
        • 2.Qxd5#
      • 1...Sxd3
        • 2.Sg5#
      • 1...Bg8
        • 2.Qg6#

Anticipated by 107905(1991)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(d);::S(C)
  • Tries
    • Try
      • Q(D);CHECK,N_PINP(e)
      • Vars
        • S(d);XQ(D)::S(C)
        • P(e);OGATEB,P_SPINP(e),SBLOCK::QAB(D)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • R(B);
    • Threat
      • QAB1(D),XP(e)
    • Vars
      • K(c);N_SPINP(e),S_FLIGHT,XR(B)::QAR2(D),XP(e)
      • S(d);SBLOCK,XR(B)::S(C)
      • B(g);N_GUARD::QAB(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).