MESON Chess Problem Database

Problem Display
PID: 118352 (b1N1n3/8/p1B5/k1K5/2R5/2r5/2p5/1n2Q3 w - - 0 1)

Rasmussen, Knud AK

Toronto Telegram, 1948

b1N1n3/8/p1B5/k1K5/2R5/2r5/2p5/1n2Q3

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Qxc3#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Ra4#
        • 2.Qe5#
      • 1...Sa3
        • 2.Ra4#
        • 2.Qxc3#
      • 1...Sd6
        • 2.Ra4#
      • 1...Sf6
        • 2.Ra4#
      • 1...Sc7
        • 2.Ra4#
      • 1...Bxc6!
    • 1.Qxe8?
      • threat
        • 2.Qd8#
      • 1...Rb3
        • 2.Ra4#
      • 1...Rd3
        • 2.Ra4#
      • 1...Rxc4+!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Kd4#
      • 1...Rxc4+
        • 2.Kxc4#
      • 1...Bxc6
        • 2.Kxc6#
      • 1...Rb3
        • 2.Ra4#
      • 1...Rd3
        • 2.Ra4#
      • 1...Re3
        • 2.Ra4#
      • 1...Sa3
        • 2.Qxc3#
      • 1...Sd6
        • 2.Kxd6#
      • 1...Sf6
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(A),XR(c)
  • Tries
    • Try
      • K(C);N_SPINR(B),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::R1(B)
      • Refutation
        • B(f);XB(D)
    • Try
      • Q(A);N_PINR(c),XS(g)
      • Threat
        • QAB(A)
      • Vars
        • R(c);N_PINR(B)::R1(B)
      • Refutation
        • R(c);CHECK,XR(B)
  • Actual
    • Q(A);N_PINR(c)
    • Threat
      • QAR(A)+K(C)
    • Vars
      • R(c);CHECK,XR(B)::QAR(A)+K(C),XR(c)
      • B(f);XB(D)::QAR(A)+K(C),XB(f)
      • R(c);N_PINR(B)::R1(B)
      • S(a);N_GUARD::QAB(A),XR(c)
      • S(g);::QAR(A)+K(C),XS(g)
      • S(g);N_GUARD::QAB(A)
      • S(g);N_GUARD::QAB(A),XS(g)
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).