MESON Chess Problem Database

Problem Display
PID: 213166 (6Q1/4P3/1K2R3/2pp2P1/2Pkp3/2p5/b1P1r3/2nNbB2 w - - 0 1)

Marysko, Milos

Land og Folk, 1971

6Q1/4P3/1K2R3/2pp2P1/2Pkp3/2p5/b1P1r3/2nNbB2

#2

9 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Rxe4#
    • 1...Rxc2
      • 2.Qg7#
      • 2.Qh8#
    • 1...Rd2
      • 2.Qg7#
      • 2.Qh8#
    • 1...Rg2
      • 2.Qg7#
      • 2.Qh8#
    • 1...Rh2
      • 2.Qg7#
    • 1...Re3
      • 2.Qg7#
      • 2.Qh8#
    • 1...Bxc4
      • 2.Qg7#
      • 2.Qh8#
    • 1...dxc4
      • 2.Qd8#
  • Tries
    • 1.Rxe4+?
      • 1...Rxe4
        • 2.Qxd5#
      • 1...dxe4
        • 2.Qd5#
      • 1...Kxe4!
    • 1.Qd8?
      • threat
        • 2.Qxd5#
      • 1...Bxc4
        • 2.Qh8#
      • 1...Kxc4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxd5#
      • 1...Kxc4
        • 2.Qa4#
      • 1...Bxc4
        • 2.Qh8#
      • 1...dxc4
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(f);P-FLIGHT,P_SPINR(d),XP(D)::R(G),XP(g)
    • R(d);::QAB(I)
    • P(i);OGATEB,SBLOCK,XP(D)::QAR(I)
  • Tries
    • Try
      • R(G);CHECK,XP(g)
      • Vars
        • R(d);XR(G)::QAR1(I),XP(i)
        • P(i);XR(G)::QAR1(I)
      • Refutation
        • K(f);P-FLIGHT,XR(G)
    • Try
      • Q(I);P_PINP(i)
      • Threat
        • QAR1(I),XP(i)
      • Vars
        • B(c);SBLOCK,XP(D)::QAB(I)
      • Refutation
        • K(f);N_SPINP(i),P-FLIGHT,P_SPINR(d),XP(D)
  • Actual
    • Q(I);
    • Threat
      • QAR1(I),XP(i)
    • Vars
      • K(f);OGATEB,P-FLIGHT,P_SPINR(d),XP(D)::QAR2(I)
      • B(c);SBLOCK,XP(D)::QAB(I)
      • P(i);OGATEB,SBLOCK,XP(D)::QAR(I)
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).