MESON Chess Problem Database

Problem Display
PID: 15200 (8/4p3/7Q/K3kP2/4NR2/2Pr4/4R3/1B6 w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize, Chervoni Girnik, 1981

8/4p3/7Q/K3kP2/4NR2/2Pr4/4R3/1B6

#2

8 + 3

3752 FIDE Album (1980-1982) 1988
3310 2345 Chess Problems 1997
6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qe6#
    • 1...Rxc3
      • 2.Sxc3#
    • 1...Rd5+
      • 2.Sc5#
    • 1...Rd6
      • 2.Sf6#
  • Tries
    • 1.Bxd3?
      • 1...Kd5
        • 2.Qe6#
      • 1...e6!
    • 1.Rg4?
      • threat
        • 2.Qe6#
      • 1...Rd5+
        • 2.Sc5#
      • 1...Kd5
        • 2.Qe6#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Rd6
        • 2.Sf6#
      • 1...e6
        • 2.Qxe6#
      • 1...Kxf5!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Qe6#
      • 1...Rd5+
        • 2.Sc5#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Sg3#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Rd6
        • 2.Sf6#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAB1(H)
    • R(a);XP(C)::R(B)+S(D),XR(a)
    • R(a);CHECK,N_GUARD,SBLOCK::R(B)+S(D)
    • R(a);N_GUARD,SBLOCK::R(B)+S(D)
  • Tries
    • Try
      • B(A);XR(a)
      • Vars
        • K(b);P-FLIGHT::QAB1(H)
      • Refutation
        • P(c);
    • Try
      • R(E);
      • Threat
        • QAR1(H)
      • Vars
        • R(a);CHECK,N_GUARD,SBLOCK::R(B)+S(D)
        • K(b);P-FLIGHT::QAB1(H)
        • R(a);XP(C)::R(B)+S(D),XR(a)
        • R(a);N_GUARD,SBLOCK::R(B)+S(D)
        • P(c);::QAR1(H),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XP(G)
  • Actual
    • R(E);
    • Threat
      • QAR1(H)
    • Vars
      • R(a);CHECK,N_GUARD,SBLOCK::R(B)+S(D)
      • K(b);P-FLIGHT::QAB1(H)
      • K(b);P-FLIGHT,XP(G)::S(D)
      • R(a);XP(C)::R(B)+S(D),XR(a)
      • R(a);N_GUARD,SBLOCK::R(B)+S(D)
      • P(c);::QAR1(H),XP(c)
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).