MESON Chess Problem Database

Problem Display
PID: 76499 (2R5/p3K2p/3NP3/r2k4/r2PqP2/5nN1/2b1Qn2/b2R3B w - - 0 1)

Holladay, Edgar Dinwiddie

Cleveland Plain Dealer, 1945

2R5/p3K2p/3NP3/r2k4/r2PqP2/5nN1/2b1Qn2/b2R3B

#2

10 + 10

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Qe5#
    • 1...Qg6
      • 2.Qe5#
    • 1...Qxd4
      • 2.Qe5#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qxe6+
      • 2.Qxe6#
    • 1...Ra2
      • 2.Qc4#
    • 1...Ra3
      • 2.Qc4#
    • 1...Rc4
      • 2.Qxc4#
    • 1...Rxd4
      • 2.Qc4#
    • 1...Rb5
      • 2.Qxb5#
    • 1...Rc5
      • 2.Rxc5#
    • 1...Ra6
      • 2.Rc5#
      • 2.Qb5#
    • 1...Sd3
      • 2.Qxe4#
    • 1...Se1
      • 2.Qh5#
    • 1...Sg1
      • 2.Qh5#
    • 1...Sh2
      • 2.Qh5#
    • 1...Sxd4
      • 2.Qh5#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Rc5#
      • 1...Qxe6+
        • 2.Qxe6#
      • 1...Qxd4
        • 2.Qe5#
      • 1...Rxd4
        • 2.Qc4#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...Bxd4
        • 2.Sc3#
      • 1...Sxd4
        • 2.Qh5#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Sd3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_PINP(H),OGATE,P_SPINS(d)::QAR1(C)
    • Q(f);N_PINP(H),OGATE,P_SPINQ(f),P_SPINS(d),XP(E)::QAR1(C)
    • Q(f);OGATE,P_SPINS(d)::QAR1(C),XQ(f)
    • Q(f);CHECK,OGATE,P_SPINS(d),XP(H)::QAB1(C),XQ(f)
    • R(e);N_GUARD::QAB1(C)
    • R(e);N_GUARD::QAB1(C),XR(e)
    • R(e);N_GUARD,P_SPINR(e),XP(E)::QAB1(C)
    • R(g);N_GUARD::QAR2(C),XR(g)
    • R(g);N_GUARD::R1(J),XR(g)
    • S(c);N_GUARD,S_CUTB(b)::QAB1(C),XQ(f)
    • S(d);OGATE,P_SPINQ(f)::QAR(C)
    • S(d);OGATE,P_SPINQ(f),P_SPINS(d),XP(E)::QAR(C)
  • Actual
    • S(G);
    • Threat
      • R1(J)
    • Vars
      • Q(f);CHECK,OGATE,P_SPINS(d),XP(H)::QAB1(C),XQ(f)
      • Q(f);N_PINP(H),OGATE,P_SPINQ(f),P_SPINS(d),XP(E)::QAR1(C)
      • R(e);N_GUARD,P_SPINR(e),XP(E)::QAB1(C)
      • R(g);OGATE,XS(G)::QAR2(C),XR(g)
      • B(a);N_GUARD,P_SPINB(a),XP(E)::S(G)
      • S(d);OGATE,P_SPINQ(f),P_SPINS(d),XP(E)::QAR(C)
      • R(e);N_GUARD::QAB1(C),XR(e)
      • S(c);N_GUARD,S_CUTB(b)::QAB1(C),XQ(f)
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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).