MESON Chess Problem Database

Problem Display
PID: 46538 (6Q1/3p1N2/pP2P3/b2k1p2/K1R2P2/1R2B3/B7/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

Uralski Problemist, 2002

6Q1/3p1N2/pP2P3/b2k1p2/K1R2P2/1R2B3/B7/8

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Ra3#
    • 1...dxe6
      • 2.Rd3#
  • Tries
    • 1.Rd4+?
      • 1...Kc5
        • 2.Qc8#
      • 1...Kc6
        • 2.Qc8#
      • 1...Kxe6!
    • 1.Rc5+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Qg2#
      • 1...Kxe6!
    • 1.Rc6?
      • threat
        • 2.Qg2#
      • 1...Ke4
        • 2.Qg2#
      • 1...Kxc6
        • 2.Qa8#
      • 1...dxc6
        • 2.Rb4#
      • 1...d6!
    • 1.Rc7?
      • threat
        • 2.Rb4#
      • 1...Ke4
        • 2.Qg2#
      • 1...Bb4
        • 2.Rxb4#
      • 1...Kxe6!
    • 1.Rc8?
      • threat
        • 2.Rb4#
      • 1...Ke4
        • 2.Qg2#
      • 1...Bb4
        • 2.Rxb4#
      • 1...Kxe6!
    • 1.Qg2+?
      • 1...Kxc4
        • 2.Se5#
        • 2.Sd6#
        • 2.Ra3#
      • 1...Kxe6!
    • 1.Qa8+?
      • 1...Kxc4
        • 2.Se5#
        • 2.Sd6#
        • 2.Ra3#
      • 1...Kxe6!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qa8#
      • 1...Kxe4
        • 2.Qg2#
      • 1...Kc6
        • 2.Qa8#
      • 1...fxe4
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(b);OGATEB,S_FLIGHT,XR(E)::B(A)+R(B)
    • P(e);SBLOCK,XP(H)::R(B)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(J)
        • K(b);S_FLIGHT::QAR2(J)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • R(E);
      • Threat
        • QAB(J)
      • Vars
        • K(b);S_FLIGHT::QAB(J)
        • K(b);OGATEB,S_FLIGHT,XR(E)::QAB(J)
        • P(e);SBLOCK,XR(E)::B(A)+R(B)
      • Refutation
        • P(e);
    • Try
      • R(E);
      • Threat
        • B(A)+R(B)
      • Vars
        • K(b);S_FLIGHT::QAB(J)
        • B(a);::B(A)+R(B),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • R(E);
      • Threat
        • B(A)+R(B)
      • Vars
        • K(b);S_FLIGHT::QAB(J)
        • B(a);::B(A)+R(B),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(H)
  • Actual
    • R(E);
    • Threat
      • QAB(J)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(E)::QAB(J)
      • K(b);S_FLIGHT::QAB(J)
      • P(c);SBLOCK,XR(E)::B(A)+R(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).