MESON Chess Problem Database

Problem Display
PID: 154518 (1K6/8/4PQ2/1p1k4/1B2b1P1/1P6/3nR3/8 w - - 0 1)

Hage, Poul

Magasinet, 1932

1K6/8/4PQ2/1p1k4/1B2b1P1/1P6/3nR3/8

#2

7 + 4

4035 Aarsskrift for DSK 1935
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rxd2+?
      • 1...Kc6
        • 2.Rd6#
        • 2.e7#
      • 1...Bd3!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Qd6#
        • 2.Qc5#
      • 1...Kxe5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Rxd2#
      • 1...Kc6
        • 2.Qd6#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Sxb3
        • 2.Qxe4#
      • 1...Sc4
        • 2.Qxe4#

Anticipated by 194874(1918), 190303(1932)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK,XS(a)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(b),XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);P-FLIGHT,P_SPINB(b)::R(A),XS(a)
      • K(d);S_FLIGHT::QAR1(F)
      • K(d);P_SPINB(b),S_FLIGHT,XP(E)::QAB1(F)
      • S(a);N_GUARD,XP(B)::QAB1(F),XB(b)
      • S(a);N_GUARD::QAB1(F),XB(b)
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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).