MESON Chess Problem Database

Problem Display
PID: 84443 (2B5/5K2/1Pk1pp1Q/P1pRr3/P1b5/2Np1NB1/8/2R2q2 w - - 0 1)

Funkelstein, L

Latvian Championship, 1950

2B5/5K2/1Pk1pp1Q/P1pRr3/P1b5/2Np1NB1/8/2R2q2

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Rd6#
    • 1...Re2
      • 2.Rd6#
    • 1...Re3
      • 2.Rd6#
    • 1...Re4
      • 2.Rd6#
    • 1...Rf5
      • 2.Rd6#
    • 1...Rg5
      • 2.Rd6#
    • 1...Rh5
      • 2.Rd6#
    • 1...Bb5
      • 2.axb5#
    • 1...f5
      • 2.Sxe5#
  • Tries
    • 1.Se4?
      • threat
        • 2.Rd6#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Bxd5
        • 2.Sd4#
        • 2.Rxc5#
      • 1...exd5
        • 2.Sxe5#
      • 1...Rxd5!
    • 1.Bxe5?
      • threat
        • 2.Rd6#
      • 1...exd5
        • 2.Qxf6#
      • 1...fxe5
        • 2.Qxe6#
      • 1...Bxd5!
    • 1.Rxc5+?
      • 1...Kd6
        • 2.Se4#
        • 2.Qf8#
      • 1...Rxc5
        • 2.Sd4#
      • 1...Kxc5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Rd6#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Rxd5
        • 2.Sa7#
      • 1...Bxb5
        • 2.Rcxc5#
      • 1...Bxd5
        • 2.Sfd4#
      • 1...exd5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(e);::R1(G)
    • B(c);OGATE::P(E),XB(c)
    • P(h);N_GUARD,P_SPINP(g)::S(C),XR(e)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(G)
      • Vars
        • K(f);S_FLIGHT,XR(G)::B(K)
        • P(g);P_SPINP(h),SBLOCK,XR(G)::S(C),XR(e)
      • Refutation
        • R(e);XR(G)
    • Try
      • B(D);XR(e)
      • Threat
        • R1(G)
      • Vars
        • P(g);OGATEB,P_SPINP(h),XR(G)::QAR(I),XP(h)
        • P(h);OGATE,P_PINS(C),P_SPINP(g),XB(D)::QAR2(I),XP(g)
      • Refutation
        • B(c);XR(G)
    • Try
      • R(G);CHECK,XP(d)
      • Vars
        • R(e);SBLOCK,XR(G)::S(C)
      • Refutation
        • K(f);P-FLIGHT,XR(G)
  • Actual
    • S(B);
    • Threat
      • R1(G)
    • Vars
      • K(f);S_FLIGHT,XR(G)::B(K)
      • R(e);SBLOCK,XR(G)::S(B)
      • B(c);OGATE,P_SPINP(d),XS(B)::R1(A),XP(d)
      • B(c);P_SPINP(d),SBLOCK,XR(G)::S(C)
      • P(g);P_SPINP(h),SBLOCK,XR(G)::S(C),XR(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).