MESON Chess Problem Database

Problem Display
PID: 16389 (5B2/5K2/8/3kp3/Q7/8/2PnP3/8 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

Fifty Two-Move Problems, 1940

5B2/5K2/8/3kp3/Q7/8/2PnP3/8

#2

5 + 3

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.e4#
    • 1...Sf1
      • 2.e4#
    • 1...Sb3
      • 2.e4#
    • 1...Sf3
      • 2.e4#
  • Tries
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke4!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke4!
    • 1.c3?
      • 1...Sc4
        • 2.Qa8#
      • 1...e4
        • 2.Qb5#
      • 1...Sb1
        • 2.e4#
      • 1...Sf1
        • 2.e4#
      • 1...Sb3
        • 2.e4#
      • 1...Sf3
        • 2.e4#
      • 1...Se4!
  • Keys
    • 1.e3!
      • 1...Sc4
        • 2.Qa8#
      • 1...e4
        • 2.Qb5#
      • 1...Sb1
        • 2.e4#
      • 1...Sf1
        • 2.e4#
      • 1...Sb3
        • 2.e4#
      • 1...Sf3
        • 2.e4#
      • 1...Se4
        • 2.c4#

Anticipated by 4877(1892), 143573(1895), 178120(1900), 49145(1906)

This anticipates 96887(1945), 24689(1987)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • S(a);SBLOCK::QAB(C)
        • P(c);SBLOCK::QAR2(C)
        • S(a);N_GUARD::P(B)
      • Refutation
        • S(a);
  • Actual
    • P(B);
    • Vars
      • S(a);SBLOCK::QAB(C)
      • P(c);SBLOCK::QAR2(C)
      • S(a);N_GUARD::P(B)
      • S(a);N_GUARD,SBLOCK::P(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).