MESON Chess Problem Database

Problem Display
PID: 60173 (b2n1r2/4B1pB/4p3/3Nk3/3RP3/1n2bp1K/1Q6/3qR3 w - - 0 1)

Finter, EWJ

2nd Prize, Brisbane Courier, 1931

b2n1r2/4B1pB/4p3/3Nk3/3RP3/1n2bp1K/1Q6/3qR3

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.Qb8#
  • Tries
    • 1.Rdxd1+?
      • 1...Sd4
        • 2.Qb8#
      • 1...Bd4!
    • 1.Rd2+?
      • 1...Sd4
        • 2.Qb8#
      • 1...Bd4!
    • 1.Rd3+?
      • 1...Sd4
        • 2.Qb8#
      • 1...Bd4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Qh2#
      • 1...Qxd4
        • 2.Sd3#
      • 1...Rxf4
        • 2.Rd5#
      • 1...Bxf4
        • 2.Rd5#
      • 1...Bxe4
        • 2.Rxe4#
      • 1...Sxd4
        • 2.Qb8#
      • 1...Rf6
        • 2.Bd6#
      • 1...g6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,P_SPINS(b),SBLOCK,XR(D)::QAB(B)
  • Tries
    • Try
      • R(D);CHECK,XQ(a)
      • Vars
        • S(b);OGATE,P_SPINS(b)::QAB(B)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • R(D);CHECK
      • Vars
        • S(b);OGATE,P_SPINS(b)::QAB(B)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • R(D);CHECK
      • Vars
        • S(b);OGATE,P_SPINS(b)::QAB(B)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(F)::QAB(B)
      • Q(a);N_GUARD,P_SPINQ(a),XR(D)::S(F)
      • R(j);SBLOCK,XS(F)::QAB(B)+R(D),DCHECK
      • B(c);SBLOCK,XS(F)::QAB(B)+R(D),DCHECK
      • B(h);OGATE,XP(E)::QAB(B)+R(D),DCHECK,XB(h)
      • S(b);OGATE,P_SPINS(b),SBLOCK,XR(D)::QAB(B)
      • R(j);SBLOCK::B(G)
      • P(g);::S(F),XP(g)
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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).