MESON Chess Problem Database

Problem Display
PID: 6854 (8/1Q2B3/5p2/1K1n1p2/1P2kP1R/2p1P3/2P3P1/4R3 w - - 0 1)

Mansfield, Comins

Social Chess Quarterly (The), 1934

8/1Q2B3/5p2/1K1n1p2/1P2kP1R/2p1P3/2P3P1/4R3

#2

10 + 5

3550 Complete Mansfield/II 1997
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc8?
      • threat
        • 2.Qe6#
        • 2.Qc4#
      • 1...Sxe3
        • 2.Qc4#
      • 1...Sxf4
        • 2.Qe6#
      • 1...Sb6
        • 2.Qe6#
      • 1...Sc7+!
    • 1.Qd7?
      • threat
        • 2.Qe6#
      • 1...Sxe3
        • 2.Qd3#
      • 1...Sc7+!
  • Keys
    • 1.Kc6!
      • 1...Sxb4+
        • 2.Qxb4#
      • 1...Sxe7+
        • 2.Qxe7#
      • 1...Sxe3
        • 2.Kc5#
      • 1...Sxf4
        • 2.Kd6#
      • 1...Sb6
        • 2.Kxb6#
      • 1...Sc7
        • 2.Kxc7#

Anticipated by 178835(1917)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);P_SPINS(c),XP(D)::QAR2(I)
        • S(c);P_SPINS(c),XP(F)::QAR2(I)
        • S(c);::QAR2(I)
      • Refutation
        • S(c);CHECK
    • Try
      • Q(I);N_PINS(c)
      • Threat
        • QAR2(I)
      • Vars
        • S(c);OGATE,P_SPINS(c),XP(D)::QAB1(I)
      • Refutation
        • S(c);CHECK
  • Actual
    • K(H);N_PINS(c),S_FLIGHT
    • Vars
      • S(c);CHECK,OGATE,XP(E)::QAR(I),XS(c)
      • S(c);CHECK,OGATE,XB(J)::QAR(I),XS(c)
      • S(c);P_SPINS(c),XP(D)::QAB(I)+K(H)
      • S(c);P_SPINS(c),XP(F)::QAB(I)+K(H)
      • S(c);::QAB(I)+K(H),XS(c)
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).