MESON Chess Problem Database

Problem Display
PID: 194175 (1B6/1n1p1K2/1R1q1R2/2p1k3/2p3p1/2P1p1P1/4n3/4Q2B w - - 0 1)

Haring, WH

Brisbane Courier, 1917

1B6/1n1p1K2/1R1q1R2/2p1k3/2p3p1/2P1p1P1/4n3/4Q2B

#2

8 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qxe3#
    • 1...Sg1
      • 2.Qxe3#
    • 1...Sxc3
      • 2.Qxc3#
    • 1...Sxg3
      • 2.Qxg3#
    • 1...Sd4
      • 2.Qxe3#
    • 1...Sf4
      • 2.Qxe3#
      • 2.gxf4#
    • 1...Sa5
      • 2.Bxd6#
  • Tries
    • 1.Rbxd6?
      • threat
        • 2.Rd5#
        • 2.Rde6#
      • 1...Sxd6+
        • 2.Bxd6#
      • 1...Sxc3
        • 2.Rd5#
        • 2.Qxc3#
      • 1...Sd8+!
    • 1.Qf1?
      • threat
        • 2.Rf5#
        • 2.Qf5#
      • 1...Sxc3
        • 2.Qf4#
      • 1...Sxg3
        • 2.Qf4#
      • 1...Sd4
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
        • 2.gxf4#
      • 1...Sd8+!
  • Keys
    • 1.Kg6!
      • 1...Sf4+
        • 2.gxf4#
      • 1...Qxb8
        • 2.Rf5#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sxg3
        • 2.Qxg3#
      • 1...Qc7
        • 2.Rf5#
      • 1...Sc1
        • 2.Qxe3#
      • 1...Sg1
        • 2.Qxe3#
      • 1...Sd4
        • 2.Qxe3#
      • 1...Sa5
        • 2.Bxd6#
      • 1...Sd8
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,P_SPINP(b)::QAR2(A),XP(b)
    • S(a);OGATE,P_SPINP(b),XP(C)::QAB(A),XS(a)
    • S(a);OGATE,P_SPINP(b),XP(D)::QAB(A),XS(a)
    • S(h);N_GUARD::B(H),XQ(g)
  • Tries
    • Try
      • R(E);XQ(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);CHECK,OGATE,P_SPINS(h),XR(E)::B(H),XS(h)
      • Refutation
        • S(h);CHECK
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XP(C)::QAB1(A)
        • S(a);N_GUARD,XP(D)::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • S(h);CHECK
  • Actual
    • K(G);P_SPINR(F),S_FLIGHT
    • Vars
      • S(a);CHECK,OGATE,P_SPINP(b)::P(D),XS(a)
      • Q(g);N_PINR(F),N_SPINQ(g),XB(H)::R1(F)
      • S(a);OGATE,P_SPINP(b),XP(C)::QAB(A),XS(a)
      • S(a);OGATE,P_SPINP(b),XP(D)::QAB(A),XS(a)
      • Q(g);N_PINR(F)::R1(F)
      • S(a);OGATE,P_SPINP(b)::QAR2(A),XP(b)
      • S(h);N_GUARD::B(H),XQ(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).