MESON Chess Problem Database

Problem Display
PID: 203315 (2b4B/1p1p1B2/1P3RP1/4k2K/3p4/2n1rP2/8/4R3 w - - 0 1)

ten Cate, Pieter

2nd Prize, Upsala Schacksallskap, 1924

2b4B/1p1p1B2/1P3RP1/4k2K/3p4/2n1rP2/8/4R3

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.f4#
    • 1...Se4
      • 2.f4#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Rc6#
      • 1...Sd5
        • 2.Re6#
      • 1...d6
        • 2.Rf4#
        • 2.Rf5#
      • 1...Se4+!
    • 1.Rxe3+?
      • 1...Se4
        • 2.Rxe4#
        • 2.f4#
      • 1...dxe3!
  • Keys
    • 1.Kg4!
      • threat
        • 2.Rc6#
      • 1...Re4+
        • 2.f4#
      • 1...d5+
        • 2.Re6#
      • 1...d6+
        • 2.Rf5#
      • 1...Se4
        • 2.f4#
      • 1...Sd5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);::P(B)
    • S(a);N_SPINR(b),SBLOCK::P(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • B(H)+R(E)
      • Vars
        • S(a);SBLOCK::B(H)+R(E),DCHECK
      • Refutation
        • S(a);CHECK,N_SPINR(b)
    • Try
      • R(A);CHECK,XR(b)
      • Refutation
        • P(c);XR(A)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • B(H)+R(E)
    • Vars
      • R(b);CHECK::P(B)
      • P(f);CHECK,SBLOCK::B(H)+R(E),DCHECK
      • S(a);N_SPINR(b),SBLOCK::P(B)
      • S(a);SBLOCK::B(H)+R(E),DCHECK
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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).