MESON Chess Problem Database

Problem Display
PID: 8150 (4NqrB/2pNP2R/Kp6/1R3PkP/2Q5/5p2/6b1/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

2nd HM., The Problemist, 1995

4NqrB/2pNP2R/Kp6/1R3PkP/2Q5/5p2/6b1/8

#2

10 + 7

5417 FIDE Album (1995-1997) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Bf6#
    • 1...Qf6
      • 2.Bxf6#
    • 1...Qxe8
      • 2.Bf6#
  • Tries
    • 1.Sdf6?
      • threat
        • 2.Qg4#
      • 1...Qxf6
        • 2.Bxf6#
      • 1...Bh3!
    • 1.Be5?
      • threat
        • 2.Qf4#
      • 1...Kxf5
        • 2.Bxc7#
      • 1...Qxf5
        • 2.Bf6#
      • 1...Qh6!
    • 1.Rb4?
      • threat
        • 2.Qf4#
        • 2.Qg4#
      • 1...Kxf5
        • 2.Qd5#
      • 1...Qxf5
        • 2.Qh4#
      • 1...Qh6
        • 2.Qg4#
      • 1...Bh3
        • 2.Qf4#
      • 1...Bf1!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qg4#
      • 1...Kxf5
        • 2.Sc6#
      • 1...Qxf5
        • 2.Sf7#
      • 1...Bh3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD,P_SPINQ(f),XP(C)::B(J)
    • Q(f);N_GUARD::B(J),XQ(f)
    • Q(f);N_GUARD,XS(I)::B(J)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(A)
      • Vars
        • Q(f);OGATE,XS(F)::B(J),XQ(f)
      • Refutation
        • B(a);
    • Try
      • B(J);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(C)::R(B)+B(J),XP(e)
        • Q(f);N_GUARD,XP(C)::B(J)
      • Refutation
        • Q(f);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
        • Q(f);SBLOCK,XP(C)::QAB1(A)
        • Q(f);::QAR1(A)
        • B(a);::QAB1(A)
      • Refutation
        • B(a);P_PINQ(A)
  • Actual
    • S(F);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT,XP(C)::R(B)+S(F)
      • Q(f);N_GUARD,XP(C)::S(F)
      • B(a);N_GUARD::S(F),XP(b)
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).