MESON Chess Problem Database

Problem Display
PID: 244462 (4b3/2R5/1bq1QKp1/1r1p4/1p1kNN2/8/BpP1R3/8 w - - 0 1)

Eerkes, Allard Pieter

Tijdschrift vd KNSB, 1942

4b3/2R5/1bq1QKp1/1r1p4/1p1kNN2/8/BpP1R3/8

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Qe5#
    • 1...Qd7
      • 2.Qe5#
    • 1...Qa8
      • 2.Qe5#
    • 1...Qxc2
      • 2.Qe5#
    • 1...Qc3
      • 2.Qe5#
    • 1...Qc4
      • 2.Qe5#
    • 1...Qc5
      • 2.Qe5#
    • 1...Qxe6+
      • 2.Sxe6#
  • Tries
    • 1.c3+?
      • 1...Qxc3
        • 2.Qe5#
      • 1...bxc3!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe3#
      • 1...Kc3
        • 2.Sxb5#
      • 1...Kc5
        • 2.Qxd5#
      • 1...Qxd6
        • 2.Rd2#
      • 1...Qc3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(g);N_PINQ(F)::QAB1(F)
    • Q(g);N_PINQ(F),XP(B)::QAB1(F)
    • Q(g);CHECK,XQ(F)::S(E),XQ(g)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • Q(g);N_PINQ(F),XP(B)::QAB1(F)
      • Refutation
        • P(b);XP(B)
  • Actual
    • S(D);N_SPINQ(F)
    • Threat
      • QAB1(F)
    • Vars
      • K(c);P_SPINQ(g),S_FLIGHT::S(D),XR(d)
      • K(c);P_SPINQ(g),S_FLIGHT::QAR1(F),XP(e)
      • Q(g);P_PINQ(F),XS(D)::R(C)
      • Q(g);::QAB1(F)
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).