MESON Chess Problem Database

Problem Display
PID: 158241 (5Q2/p7/3Rp1pK/3PNb1n/4k1pR/rp1pNp2/1B3P1P/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

The Problemist, 2015

5Q2/p7/3Rp1pK/3PNb1n/4k1pR/rp1pNp2/1B3P1P/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Rxg4#
  • Tries
    • 1.S5xg4?
      • threat
        • 2.Sf6#
      • 1...Kf4
        • 2.Se5#
      • 1...Bxg4
        • 2.Rxe6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...d2!
    • 1.Ra6?
      • threat
        • 2.Qb4#
      • 1...Kf4
        • 2.Rxg4#
      • 1...Ra4
        • 2.Rxa4#
      • 1...exd5!
  • Keys
    • 1.S3xg4!
      • threat
        • 2.Sf6#
      • 1...Kf4
        • 2.Se3#
      • 1...Bxg4
        • 2.Qxf3#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,P_SPINB(g)::R1(E),XP(f)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • R(E)+S(G),DCHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINB(g)::R(E)+S(G)
        • B(g);N_GUARD,P_SPINB(g),XS(G)::R(H),XP(i)
        • S(h);::R(E)+S(G),DCHECK,XS(h)
      • Refutation
        • P(c);
    • Try
      • R(H);
      • Threat
        • QAR(J)
      • Vars
        • K(e);P-FLIGHT,P_SPINB(g)::R1(E),XP(f)
        • R(a);N_GUARD::R(H),XR(a)
      • Refutation
        • P(i);XP(F)
  • Actual
    • S(D);XP(f)
    • Threat
      • R(E)+S(D),DCHECK
    • Vars
      • K(e);P-FLIGHT,P_SPINB(g)::R(E)+S(D)
      • B(g);OGATE,P_SPINB(g),XS(D)::QAB1(J),XP(d)
      • S(h);::R(E)+S(D),DCHECK,XS(h)
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).