MESON Chess Problem Database

Problem Display
PID: 195126 (2rNr3/B6p/8/QpR2B2/1p1k4/3P4/2qR1P2/3Nb2K w - - 0 1)

Jerrard, Ernest Haslam Harvey

Brisbane Courier, 1918

2rNr3/B6p/8/QpR2B2/1p1k4/3P4/2qR1P2/3Nb2K

#2

10 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.Qxb4#
    • 1...Qxd3
      • 2.Rxd3#
      • 2.Qxb4#
      • 2.Qa1#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Ra8
      • 2.Sc6#
    • 1...Rb8
      • 2.Sc6#
    • 1...Re3
      • 2.fxe3#
    • 1...Re6
      • 2.Sxe6#
    • 1...Rf8
      • 2.Se6#
    • 1...Rg8
      • 2.Se6#
    • 1...Rh8
      • 2.Se6#
  • Tries
    • 1.Be4?
      • threat
        • 2.Rd5#
      • 1...Qxd1
        • 2.Qxb4#
      • 1...Qxd3
        • 2.Qxb4#
      • 1...Qxc5
        • 2.Qa1#
      • 1...Rxc5
        • 2.Sc6#
      • 1...Rxe4!
    • 1.Re5+?
      • 1...Qc5
        • 2.Qa1#
      • 1...Rc5
        • 2.Sc6#
      • 1...Kxe5!
    • 1.Qa1+?
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qc3!
  • Keys
    • 1.Be6!
      • threat
        • 2.Rd5#
      • 1...Qxd1
        • 2.Qxb4#
      • 1...Qxd3
        • 2.Qxb4#
      • 1...Qxc5
        • 2.Qa1#
      • 1...Rxc5
        • 2.Sc6#
      • 1...Rxe6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD,XS(A)::QAR2(F),XP(c)
    • R(g);N_GUARD::S(J),XR(g)
    • R(g);N_GUARD::S(J)
    • R(h);OGATE::P(D),XR(h)
    • R(h);N_GUARD::S(J),XR(h)
    • R(h);N_GUARD::S(J)
  • Tries
    • Try
      • B(H);
      • Threat
        • B(I)+R(G),DCHECK
      • Vars
        • Q(b);N_GUARD,XS(A)::QAR2(F),XP(c)
        • Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAR2(F),XP(c)
        • Q(b);N_GUARD,P_SPINQ(b),XR(G)::QAB(F)
        • R(g);N_GUARD,P_SPINR(g),XR(G)::S(J)
      • Refutation
        • R(h);XB(H)
    • Try
      • R(G);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::QAB(F)
        • R(g);P_SPINR(g)::S(J)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XR(G)
    • Try
      • Q(F);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB(F),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • B(H);
    • Threat
      • B(I)+R(G),DCHECK
    • Vars
      • Q(b);N_GUARD,XS(A)::QAR2(F),XP(c)
      • Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAR2(F),XP(c)
      • Q(b);N_GUARD,P_SPINQ(b),XR(G)::QAB(F)
      • R(g);N_GUARD,P_SPINR(g),XR(G)::S(J)
      • R(h);XB(H)::S(J),XR(h)
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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).