MESON Chess Problem Database

Problem Display
PID: 180531 (8/2p4K/3kPP1R/2Npp3/P1R4Q/8/6BB/1r6 w - - 0 1)

Lider, Valentin Viktorovich

Revista Romana de Sah, 1978

8/2p4K/3kPP1R/2Npp3/P1R4Q/8/6BB/1r6

#2

10 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Qd4#
    • 1...d4
      • 2.Qxd4#
  • Tries
    • 1.Bxe5+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Kc6!
    • 1.e7?
      • threat
        • 2.f7#
      • 1...Kc6
        • 2.f7#
      • 1...dxc4
        • 2.Qd4#
      • 1...c6
        • 2.e8S#
      • 1...Rf1!
  • Keys
    • 1.f7!
      • threat
        • 2.e7#
      • 1...Kc6
        • 2.e7#
      • 1...dxc4
        • 2.f8Q#
        • 2.f8B#
      • 1...Rf1
        • 2.Sb7#
      • 1...c6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(b);OGATEB,XR(D)::QAR2(E)
    • P(b);OGATEB::QAR2(E),XP(b)
  • Tries
    • Try
      • B(B);CHECK,XP(c)
      • Vars
        • K(d);S_FLIGHT,XB(B)::QAB1(E)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b)
    • Try
      • P(G);
      • Threat
        • R(I)+P(H)
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT,P_SPINP(b)::R(I)+P(H)
        • P(b);OGATEB,XR(D)::QAR2(E)
        • P(e);SBLOCK::P=S
      • Refutation
        • R(a);
  • Actual
    • P(H);
    • Threat
      • R(I)+P(G)
    • Vars
      • K(d);N_SPINP(c),P-FLIGHT,P_SPINP(b)::R(I)+P(G)
      • P(b);XR(D)::P=Q
      • R(a);N_GUARD::S(F)
      • P(e);SBLOCK::QAR2(E)
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).