MESON Chess Problem Database

Problem Display
PID: 219063 (2Q5/kp6/8/2PP4/p1K5/2BR4/8/8 w - - 0 1)

Arnold, William E

Baltimore American and Commercial Advertiser, 1881

2Q5/kp6/8/2PP4/p1K5/2BR4/8/8

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Qa8#
  • Tries
    • 1.Kb5?
      • 1...b6
        • 2.cxb6#
      • 1...a3!
    • 1.Ba5?
      • 1...b5+
        • 2.cxb5 ep#
      • 1...Ka6
        • 2.Qa8#
      • 1...b6
        • 2.Bxb6#
        • 2.cxb6#
      • 1...a3!
    • 1.Qb8+?
      • 1...Ka6
        • 2.Qa8#
      • 1...Kxb8!
  • Keys
    • 1.Bd4!
      • 1...b5+
        • 2.cxb5 ep#
      • 1...Ka6
        • 2.Qa8#
      • 1...b6
        • 2.cxb6#
      • 1...a3
        • 2.Rxa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINP(c)::QAR2(F)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);OGATE::P(D),XP(c)
      • Refutation
        • P(a);
    • Try
      • B(A);
      • Vars
        • P(c);CHECK,OGATE::P(D),XP(c),EP
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(F)
      • Refutation
        • P(a);
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(F)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
  • Actual
    • B(A);
    • Vars
      • P(c);CHECK,OGATE::P(D),XP(c),EP
      • K(b);P-FLIGHT,P_SPINP(c)::QAR2(F)
      • P(c);OGATE::P(D),XP(c)
      • P(a);OGATEB::R(B),XP(a)
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).