MESON Chess Problem Database

Problem Display
PID: 213140 (7Q/2K5/4p1N1/4p1R1/2Ppk3/4q2R/6P1/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1970

7Q/2K5/4p1N1/4p1R1/2Ppk3/4q2R/6P1/8

#2

7 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qa8#
    • 1...Qg1
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qh4#
      • 2.Qa8#
    • 1...Qd2
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qa8#
    • 1...Qf2
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qa8#
    • 1...Qf4
      • 2.Qa8#
    • 1...Qe1
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qa8#
    • 1...Qe2
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qa8#
    • 1...Qa3
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qh4#
    • 1...Qb3
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qh4#
    • 1...Qc3
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qh4#
      • 2.Qa8#
    • 1...Qd3
      • 2.Rxe5#
      • 2.Qxe5#
      • 2.Qh4#
      • 2.Qa8#
    • 1...d3
      • 2.Qxe5#
  • Tries
    • 1.Qh4+?
      • 1...Qf4
        • 2.Rxe5#
      • 1...Kd3!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qxe5#
      • 1...Kxf4
        • 2.Qh4#
      • 1...Qxf4
        • 2.Qa8#
      • 1...exf4
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(a);::QAB(G)
    • P(b);SBLOCK::QAR1(G),XP(d)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • Q(a);P_SPINQ(a)::R1(D),XP(d)
      • Refutation
        • K(c);P_SPINQ(a),S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR1(G),XP(d)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XS(E)::QAR2(G)
      • Q(a);SBLOCK,XS(E)::QAB(G)
      • P(d);SBLOCK,XS(E)::QAB(G)
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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).