MESON Chess Problem Database

Problem Display
PID: 206479 (4K3/BpkP2R1/1p6/nb1Q4/2p2b2/4p3/8/8 w - - 0 1)

ten Cate, Pieter

Grantham Journal, 1925

4K3/BpkP2R1/1p6/nb1Q4/2p2b2/4p3/8/8

#2

5 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.d8Q#
      • 2.d8R#
    • 1...Bxd7+
      • 2.Qxd7#
    • 1...Sc6
      • 2.d8Q#
  • Tries
    • 1.Qxb5?
      • threat
        • 2.Qxb6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Bh2
        • 2.Qxb6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Bg3
        • 2.Qxb6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Sb3
        • 2.Qxb6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Sc6
        • 2.d8Q#
      • 1...e2
        • 2.Qxb6#
        • 2.d8Q#
        • 2.d8R#
      • 1...c3
        • 2.Qxb6#
        • 2.d8Q#
        • 2.d8R#
      • 1...Kd6!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Rg6#
        • 2.d8S#
      • 1...Bxe5!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxb6#
      • 1...Bxd7+
        • 2.Qxd7#
      • 1...Kc6
        • 2.d8S#
      • 1...Bc6
        • 2.Qxf4#
      • 1...Sc6
        • 2.d8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);N_PINP(C)::P=Q
    • B(e);CHECK,OGATE,P_SPINB(e),XP(C)::QAR1(A),XB(e)
    • S(d);N_PINP(C)::P=Q
  • Tries
    • Try
      • Q(A);N_SPINP(C),XB(e)
      • Threat
        • DUALS(3)
      • Vars
        • S(d);::P=Q
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • B(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(f)
    • Vars
      • B(e);CHECK,OGATE,P_SPINB(e),XP(C)::QAR1(A),XB(e)
      • K(h);N_PINP(C),P-FLIGHT::P=S
      • B(e);SBLOCK::QAB(A),XB(c)
      • S(d);N_PINP(C),SBLOCK::P=Q
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).