MESON Chess Problem Database

Problem Display
PID: 249328 (8/p1p1pK1B/8/1N1pk1p1/8/2r1b1R1/Q5N1/8 w - - 0 1)

Korenev, Valery Ivanovich

Uralski Problemist, 2000

8/p1p1pK1B/8/1N1pk1p1/8/2r1b1R1/Q5N1/8

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Rxe3#
    • 1...Rc2
      • 2.Rxe3#
    • 1...Rc5
      • 2.Rxe3#
    • 1...Rc6
      • 2.Rxe3#
    • 1...Bg1
      • 2.Rxg5#
    • 1...Bf2
      • 2.Rxg5#
    • 1...Bd4
      • 2.Rxg5#
    • 1...Bc5
      • 2.Rxg5#
    • 1...Bb6
      • 2.Rxg5#
    • 1...d4
      • 2.Qe6#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qf5#
      • 1...Rxc2
        • 2.Rxe3#
      • 1...Rd3
        • 2.Qxc7#
      • 1...e6!
    • 1.Qa6?
      • threat
        • 2.Qe6#
      • 1...Rc6
        • 2.Rxe3#
      • 1...Bb6
        • 2.Rxg5#
      • 1...e6
        • 2.Qxe6#
      • 1...c6!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf5#
      • 1...Bxf2
        • 2.Rxg5#
      • 1...Bf4
        • 2.Qd4#
      • 1...e6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::R(C),XB(b)
    • B(b);N_GUARD::R(C),XP(e)
    • P(c);OGATE::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD,XQ(A)::R(C),XB(b)
        • R(a);OGATE::QAB(A),XP(g)
      • Refutation
        • P(h);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::R(C),XB(b)
        • B(b);N_GUARD::R(C),XP(e)
        • P(h);::QAR1(A),XP(h)
      • Refutation
        • P(g);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • B(b);N_GUARD,XQ(A)::R(C),XP(e)
      • B(b);OGATE::QAB1(A)
      • P(h);N_GUARD::QAB1(A)
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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).