MESON Chess Problem Database

Problem Display
PID: 22404 (2kr4/K1pp4/8/8/8/8/7Q/3R4 w - - 0 1)

Euwe, Max

Kikeriki, 1927

2kr4/K1pp4/8/8/8/8/7Q/3R4

#2

3 + 4

2012 Miniature Chess Problems from Many Countries 1981
3296 Shakhmatny zadachi miniaturi 1987
3713 Snap 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.Qxh8#
    • 1...c5
      • 2.Qb8#
    • 1...c6
      • 2.Qb8#
  • Tries
    • 1.Rc1?
      • threat
        • 2.Rxc7#
        • 2.Qxc7#
      • 1...Re8
        • 2.Qxc7#
      • 1...Rf8
        • 2.Qxc7#
      • 1...Rg8
        • 2.Qxc7#
      • 1...Rh8
        • 2.Qxc7#
        • 2.Qxh8#
      • 1...c5
        • 2.Rxc5#
        • 2.Qb8#
      • 1...c6
        • 2.Qb8#
      • 1...d6!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qa6#
      • 1...cxd6
        • 2.Rc1#
      • 1...Re8
        • 2.Qxd7#
      • 1...Rf8
        • 2.Qxf8#
        • 2.Qxd7#
      • 1...Rg8
        • 2.Qxd7#
      • 1...Rh8
        • 2.Qxd7#
      • 1...c5
        • 2.Qxc5#
        • 2.Qb8#
      • 1...c6
        • 2.Qb8#

Anticipated by 125415(0000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATEB::QAR(B),XR(d)
    • P(a);OGATE::QAR1(B)
  • Tries
    • Try
      • R(A);P_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAR1(B),XP(a)
        • P(a);OGATE::QAR1(B)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • P(a);OGATEB,XQ(B)::R(A)
      • R(d);N_GUARD::QAB1(B),XP(b)
      • P(a);OGATE::QAR1(B)
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).