MESON Chess Problem Database

Problem Display
PID: 2064 (bB6/N3p3/2P1R3/KQq5/p2kP3/8/3P4/3N1B2 w - - 0 1)

Bettmann, Henry Wald

Source?, 0000

bB6/N3p3/2P1R3/KQq5/p2kP3/8/3P4/3N1B2

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Qc4#
      • 2.Qd5#
      • 2.Qe5#
    • 1...Qb4+
      • 2.Qxb4#
    • 1...Qb6+
      • 2.Qxb6#
    • 1...Qd6
      • 2.Qc4#
    • 1...Qxa7+
      • 2.Bxa7#
    • 1...Qc1
      • 2.Qd5#
      • 2.Qe5#
    • 1...Qc2
      • 2.Qd5#
      • 2.Qe5#
    • 1...Qc3+
      • 2.dxc3#
    • 1...Qc4
      • 2.Qxc4#
      • 2.Qe5#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qxc6
      • 2.Qe5#
  • Tries
    • 1.Be5+?
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Kxe4!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qxc5#
      • 1...Qb4+
        • 2.Qxb4#
      • 1...Qb6+
        • 2.Qxb6#
      • 1...Qxa7+
        • 2.Bxa7#
      • 1...Qc3+
        • 2.dxc3#
      • 1...Qxb5+
        • 2.Sxb5#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Qxc6
        • 2.Qd3#
      • 1...Qa3
        • 2.Qc4#
        • 2.Qd5#
      • 1...Qd6
        • 2.Qb2#
      • 1...Qc1
        • 2.Qd3#
        • 2.Qd5#
      • 1...Qc2
        • 2.Qd5#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Qd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,N_PINQ(F)::QAR2(F),XQ(c)
    • Q(c);CHECK,N_PINQ(F)::QAB(F),XQ(c)
    • Q(c);N_PINQ(F)::QAR1(F)
    • Q(c);CHECK,N_PINQ(F),OGATE,XS(I)::B(J),XQ(c)
    • Q(c);CHECK,N_PINQ(F),OGATE::P(C),XQ(c)
    • Q(c);::QAR1(F),XQ(c)
    • Q(c);::QAB1(F),XQ(c)
    • Q(c);N_PINQ(F),XP(G)::QAB1(F)
  • Tries
    • Try
      • B(J);CHECK
      • Vars
        • Q(c);XB(J)::QAB1(F),XQ(c)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
  • Actual
    • R(H);
    • Threat
      • QAB1(F),XQ(c)
    • Vars
      • Q(c);CHECK,N_PINQ(F)::QAR2(F),XQ(c)
      • Q(c);CHECK,N_PINQ(F)::QAB(F),XQ(c)
      • Q(c);CHECK,N_PINQ(F),OGATE,XS(I)::B(J),XQ(c)
      • Q(c);CHECK,N_PINQ(F),OGATE::P(C),XQ(c)
      • Q(c);CHECK,XQ(F)::S(I),XQ(c)
      • Q(c);XR(H)::QAB1(F),XQ(c)
      • Q(c);N_PINQ(F),XP(G)::QAR1(F)
      • Q(c);N_PINQ(F)::QAB(F)
      • Q(c);N_PINQ(F)::QAR1(F)
      • Q(c);N_PINQ(F)::QAR1(F),XQ(c)
      • Q(c);::QAR1(F),XQ(c)
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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).