MESON Chess Problem Database

Problem Display
PID: 183098 (8/2Pp2K1/3rk3/p3p1R1/1Qp5/1P3P2/8/8 w - - 0 1)

Gruber, F

Lidove noviny, 1907

8/2Pp2K1/3rk3/p3p1R1/1Qp5/1P3P2/8/8

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxc4#
    • 1...Ke7
      • 2.Rxe5#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Ke7
        • 2.Rxe5#
      • 1...e4
        • 2.Re5#
        • 2.Qe5#
      • 1...Rd5!
    • 1.Qxc4+?
      • 1...Ke7
        • 2.Qf7#
      • 1...Rd5!
  • Keys
    • 1.f4!
      • threat
        • 2.Rxe5#
      • 1...Kd5
        • 2.Qxc4#
      • 1...Ke7
        • 2.Rxe5#
      • 1...exf4
        • 2.Qe1#
      • 1...Rd5
        • 2.f5#
      • 1...e4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(c),S_FLIGHT::QAB1(C),XP(a)
    • K(e);P-FLIGHT,P_SPINR(d)::R(D),XP(c)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P-FLIGHT,P_SPINR(d)::R(D),XP(c)
      • Refutation
        • R(d);
    • Try
      • Q(C);CHECK,XP(a)
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • P(B);
    • Threat
      • R1(D),XP(c)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::QAB1(C),XP(a)
      • K(e);P-FLIGHT,P_SPINR(d)::R(D),XP(c)
      • P(c);OGATEB,XP(B)::QAR(C)
      • R(d);SBLOCK::P(B)
      • P(c);::R1(D)
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).