MESON Chess Problem Database

Problem Display
PID: 36061 (k5q1/6Qn/8/2N5/8/6B1/1R1R3K/2n4b w - - 0 1)

Reitman, Mark

5th HM., Melnichenko-60 JT, 1999

k5q1/6Qn/8/2N5/8/6B1/1R1R3K/2n4b

#2

6 + 5

3657 Izbrannie Shakhmatnie Zadachi Marka Reitmana 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Rb8#
      • 2.Rd8#
    • 1...Qc4
      • 2.Rb8#
      • 2.Rd8#
    • 1...Qd5
      • 2.Rb8#
    • 1...Qe6
      • 2.Rb8#
    • 1...Qb8
      • 2.Rxb8#
    • 1...Qd8
      • 2.Rxd8#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sf8
      • 2.Rb8#
      • 2.Rd8#
  • Tries
    • 1.Rd7?
      • threat
        • 2.Ra7#
      • 1...Qxg7
        • 2.Rb8#
      • 1...Qa2
        • 2.Rd8#
      • 1...Qf7
        • 2.Rb8#
      • 1...Qb8
        • 2.Rxb8#
      • 1...Bb7!
    • 1.Qxg8+?
      • 1...Ka7
        • 2.Qb8#
      • 1...Sf8!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Ra7#
      • 1...Qxg7
        • 2.Rd8#
      • 1...Bxb7
        • 2.Qxb7#
      • 1...Qa2
        • 2.Rb8#
      • 1...Qf7
        • 2.Rd8#
      • 1...Qb8
        • 2.Rxb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_GUARD::R1(A)
    • Q(e);N_GUARD,P_PINB(D)::R1(A),XQ(e)
    • Q(e);N_GUARD::R(B),XQ(e)
    • B(b);N_GUARD::QAB1(F),XB(b)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • Q(e);N_GUARD,XQ(F)::R1(A)
        • Q(e);N_GUARD,P_PINR(A)::R(B)
        • Q(e);N_GUARD::R1(A)
        • Q(e);N_GUARD,P_PINB(D)::R1(A),XQ(e)
      • Refutation
        • B(b);
    • Try
      • Q(F);CHECK,XQ(e)
      • Vars
        • K(d);P-FLIGHT::QAB1(F)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • Q(e);N_GUARD,XQ(F)::R(B)
      • B(b);OGATE,XR(A)::QAB1(F),XB(b)
      • Q(e);N_GUARD,P_PINR(B)::R1(A)
      • Q(e);N_GUARD::R(B)
      • Q(e);N_GUARD,P_PINB(D)::R1(A),XQ(e)
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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).