MESON Chess Problem Database

Problem Display
PID: 22914 (B5KB/2p5/3R4/3NN3/3kp3/Q7/b2n4/3n2b1 w - - 0 1)

Holladay, Edgar Dinwiddie

Cleveland Plain Dealer, 1944

B5KB/2p5/3R4/3NN3/3kp3/Q7/b2n4/3n2b1

#2

7 + 7

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sxc7#
    • 1...Bc4
      • 2.Sd3#
      • 2.Sf3#
      • 2.Sg4#
      • 2.Sc6#
      • 2.Sg6#
      • 2.Sd7#
      • 2.Sf7#
    • 1...Bxd5+
      • 2.Rxd5#
    • 1...Sb2
      • 2.Qc3#
    • 1...Sf2
      • 2.Qc3#
      • 2.Qe3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Se3
      • 2.Qc3#
    • 1...Sb3
      • 2.Qb4#
    • 1...Sc4
      • 2.Sf3#
      • 2.Sc6#
    • 1...cxd6
      • 2.Qa7#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Qa7#
      • 1...Bxd5+
        • 2.Rxd5#
      • 1...Sb3
        • 2.Qb4#
      • 1...Sc4
        • 2.Sf3#
      • 1...e3!
    • 1.Qb2+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb2!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Rc6#
      • 1...exd3!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Qc5#
      • 1...Bxd5+
        • 2.Sf7#
      • 1...Kxd5
        • 2.Rd6#
      • 1...e3
        • 2.Qd3#
      • 1...Sb3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(c);N_PINS(B)::R(D)+S(B),XP(g)
    • B(c);CHECK,OGATE,P_SPINB(c),XS(B)::R1(D),XB(c)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(d);N_GUARD,N_PINS(B),S_CUTB(c)::QAR2(A)
    • P(g);N_GUARD,XR(D)::QAB(A)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAB(A)
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XS(B)::R1(D),XB(c)
        • S(d);N_GUARD,N_PINS(B),S_CUTB(c)::QAR2(A)
        • S(d);N_PINS(B),SBLOCK::B(G)+S(C),DCHECK
      • Refutation
        • P(f);
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(A)
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);S_FLIGHT::R1(D)
      • Refutation
        • P(f);XQ(A)
  • Actual
    • R(D);
    • Threat
      • QAB1(A)
    • Vars
      • B(c);CHECK,SBLOCK,XS(B)::B(G)+S(C)
      • K(e);OGATEB,P-FLIGHT,XS(B)::B(E)+R(D),DCHECK
      • P(f);N_GUARD::QAR1(A)
      • S(d);N_GUARD,N_PINS(B),S_CUTB(c)::R1(D)
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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).