MESON Chess Problem Database

Problem Display
PID: 106915 (4r3/qP2Pp2/p2Q2bb/Kp6/5P1R/1r2k3/2PR2P1/2B2n2 w - - 0 1)

Crum, John

Glasgow Weekly Herald, 1907

4r3/qP2Pp2/p2Q2bb/Kp6/5P1R/1r2k3/2PR2P1/2B2n2

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe5#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qb8
      • 2.Qd4#
    • 1...Qxb7
      • 2.Qd4#
    • 1...Qa8
      • 2.Qd4#
    • 1...Bh5
      • 2.Qe5#
    • 1...Bxf4
      • 2.Qxf4#
    • 1...f5
      • 2.Qe5#
      • 2.Qe6#
  • Tries
    • 1.Rh3+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Sg3!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Rd4#
        • 2.Qe5#
      • 1...Qxc5!
  • Keys
    • 1.f5!
      • threat
        • 2.Qe5#
      • 1...Qb6+
        • 2.Qxb6#
      • 1...Ra3+
        • 2.Qxa3#
      • 1...Qxb7
        • 2.Qc5#
        • 2.Qd4#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Bxf5
        • 2.Qxh6#
      • 1...Sxd2
        • 2.Qxd2#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qb8
        • 2.Qc5#
        • 2.Qd4#
        • 2.Qb6#
      • 1...Rb4
        • 2.Qd3#
      • 1...Bg7
        • 2.Qf4#
      • 1...Sg3
        • 2.Qxg3#
      • 1...f6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 5
  • Sets
    • K(c);P-FLIGHT::QAR1(H)
    • Q(h);N_GUARD::QAB1(H),XQ(h)
    • Q(h);N_GUARD::QAB1(H)
    • Q(h);N_GUARD,XP(I)::QAB1(H)
    • B(f);N_GUARD::QAR2(H)
    • B(g);OGATE,XP(E)::QAB1(H),XB(g)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(H)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(h);XQ(H)
  • Actual
    • P(E);
    • Threat
      • QAR2(H)
    • Vars
      • Q(h);CHECK,N_GUARD::QAB(H),XQ(h)
      • R(b);CHECK,OGATEB::QAR(H),XR(b)
      • R(j);OGATE,XP(J)::QAR(H),XR(j)
      • B(f);OGATE,XP(E)::QAB(H),XB(g)
      • S(a);OGATE,P_SPINS(a),XR(C)::QAB1(H),XS(a)
      • B(g);N_GUARD::QAB1(H),XB(g)
      • Q(h);N_GUARD::QAB1(H),XQ(h)
      • Q(h);N_GUARD::QAB(H),XQ(h)
      • R(b);N_GUARD::QAR1(H)
      • B(g);N_GUARD::QAB1(H)
      • S(a);N_GUARD::QAR2(H),XS(a)
      • P(i);N_GUARD::QAR(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).