MESON Chess Problem Database

Problem Display
PID: 198376 (2B5/5Qn1/6p1/2BP4/2prk1K1/1n3N2/4Pp2/3RR3 w - - 0 1)

Jerrard, Ernest Haslam Harvey

Brisbane Courier, 1920

2B5/5Qn1/6p1/2BP4/2prk1K1/1n3N2/4Pp2/3RR3

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3+
      • 2.Qf4#
    • 1...Rd3
      • 2.exd3#
    • 1...Rxd5
      • 2.Qxd5#
      • 2.Qf4#
    • 1...Sf5
      • 2.Qe6#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Sg5+?
      • 1...Ke3+
        • 2.Qf4#
      • 1...Ke5+!
    • 1.Bb7?
      • threat
        • 2.Qf4#
      • 1...Ke3+
        • 2.Qf4#
      • 1...Sf5
        • 2.Qe6#
      • 1...Sh5
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Se6
        • 2.Qxe6#
      • 1...g5!
    • 1.Rxd4+?
      • 1...Ke3
        • 2.Qf4#
      • 1...Sxd4!
    • 1.Qf6?
      • threat
        • 2.Qe5#
      • 1...Ke3+
        • 2.Qf4#
      • 1...Rxd5
        • 2.Qf4#
      • 1...Kxd5+!
    • 1.Qe7+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Kxd5+!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Ke3+
        • 2.Qf4#
      • 1...Kxd5+
        • 2.e4#
      • 1...Rxd5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • K(e);CHECK,P-FLIGHT,P_SPINR(d)::QAB1(H)
    • R(d);OGATE::R(B)+P(C)DCHECK,XR(d)
    • S(g);N_GUARD::QAR2(H)
    • S(g);N_GUARD::QAR2(H),XS(g)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);CHECK,P-FLIGHT,P_SPINR(d)::QAB1(H)
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • B(I);
      • Threat
        • QAR1(H)
      • Vars
        • K(e);CHECK,P-FLIGHT,P_SPINR(d)::QAB1(H)
        • S(g);N_GUARD::QAR2(H)
        • S(g);N_GUARD::QAR2(H),XS(g)
      • Refutation
        • P(f);
    • Try
      • R(A);CHECK,XR(d)
      • Vars
        • K(e);P-FLIGHT::QAB1(H)
      • Refutation
        • S(b);XR(A)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • K(e);CHECK,P-FLIGHT,P_SPINR(d)::QAB1(H)
        • R(d);XP(G)::QAR1(H)
      • Refutation
        • K(e);CHECK,P_SPINR(d),S_FLIGHT,XP(G)
    • Try
      • Q(H);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAR2(H),XS(g)
      • Refutation
        • K(e);CHECK,P_SPINR(d),S_FLIGHT,XP(G)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • K(e);CHECK,P-FLIGHT,P_SPINR(d)::QAB1(H)
      • K(e);CHECK,OGATE,P_SPINR(d),S_FLIGHT,XP(G)::P(C)
      • R(d);XP(G)::QAR1(H)
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).