MESON Chess Problem Database

Problem Display
PID: 175472 (8/8/1bb1PB2/q3P1K1/r1pkNN2/p1n1R1R1/1pn1P1P1/6Q1 w - - 0 1)

Priofae

Philadelphia Times, 1899

8/8/1bb1PB2/q3P1K1/r1pkNN2/p1n1R1R1/1pn1P1P1/6Q1

#2

11 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Rd3#
    • 1...Sxe3
      • 2.Qxe3#
  • Tries
    • 1.Rxc3+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Kxe4!
    • 1.Ref3+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Kxe4!
  • Keys
    • 1.Kf5!
      • threat
        • 2.Rd3#
      • 1...Qxe5+
        • 2.Bxe5#
      • 1...Bxe4+
        • 2.Rxe4#
      • 1...Sxe3+
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(j);SBLOCK,XS(F)::QAB(A)+R(D),DCHECK
    • S(b);OGATE,P_SPINS(b),XR(D)::QAB1(A),XS(b)
  • Tries
    • Try
      • R(D);CHECK,XS(d)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(g);P-FLIGHT,XS(F)
    • Try
      • R(D);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(g);P-FLIGHT,XS(F)
  • Actual
    • K(I);P-FLIGHT
    • Threat
      • QAB(A)+R(D),DCHECK
    • Vars
      • Q(h);CHECK,OGATE,P_SPINQ(h),XP(H)::B(K),XQ(h)
      • B(j);CHECK,OGATE,XS(F)::QAB(A)+R(D),DCHECK,XB(j)
      • S(b);CHECK,OGATE,P_SPINS(b),XR(D)::QAB1(A),XS(b)
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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).