MESON Chess Problem Database

Problem Display
PID: 6160 (5N2/1r1p2p1/Rb3kP1/5p2/5P1p/6r1/5Bp1/q2nQ1K1 w - - 0 1)

Jordan, Gijsbertus

HM., Max Meyer Bequest Ty., 1927

5N2/1r1p2p1/Rb3kP1/5p2/5P1p/6r1/5Bp1/q2nQ1K1

#2

7 + 11

1755 Brooklyn Eagle 1931
58 Tijdschrift vd NSB 1931
14868 Pirnie Collection 2012
3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Bxd4#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qb1
      • 2.Bd4#
      • 2.Qe5#
    • 1...Qc1
      • 2.Bd4#
      • 2.Qe5#
    • 1...Qa2
      • 2.Bd4#
      • 2.Qe5#
    • 1...Qa3
      • 2.Bd4#
      • 2.Qe5#
    • 1...Qa4
      • 2.Qe5#
    • 1...Qxa6
      • 2.Qe5#
    • 1...Rc3
      • 2.Bd4#
      • 2.Qe5#
    • 1...Re3
      • 2.Bxh4#
    • 1...Sb2
      • 2.Bd4#
    • 1...Sc3
      • 2.Bd4#
    • 1...d5
      • 2.Qe6#
    • 1...d6
      • 2.Qe6#
  • Tries
    • 1.Rxb6+?
      • 1...d6
        • 2.Rxd6#
        • 2.Qe6#
      • 1...Rxb6!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qe7#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Re3
        • 2.Qxh4#
      • 1...Sb2
        • 2.Bd4#
      • 1...Sf2
        • 2.Be7#
      • 1...Sc3
        • 2.Bd4#
      • 1...Se3
        • 2.Qxa1#
      • 1...d5
        • 2.Qe6#
      • 1...d6
        • 2.Qe6#

This anticipates 266310(1937)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD::B(C),XQ(a)
    • Q(a);N_GUARD::QAB1(A),XQ(a)
    • Q(a);N_GUARD::QAB1(A)
    • Q(a);N_GUARD,N_SPINB(g),XR(E)::QAB1(A)
    • R(d);N_PINB(C)::B(C),XP(e)
    • S(b);P_PINQ(A),S_CUTQ(a)::B(C)
    • P(j);N_GUARD::QAR1(A)
    • P(j);N_GUARD,N_SPINB(g)::QAR1(A)
  • Tries
    • Try
      • R(E);CHECK,N_SPINB(C),XB(g)
      • Refutation
        • R(i);XR(E)
  • Actual
    • B(C);
    • Threat
      • QAB1(A)
    • Vars
      • Q(a);CHECK,N_GUARD,N_PINB(C)::B(C),XQ(a)
      • Q(a);N_GUARD::QAB1(A),XQ(a)
      • R(d);N_PINB(C),OGATE::QAB(A),XP(e)
      • S(b);P_PINQ(A),S_CUTQ(a)::B(C)
      • S(b);N_PINB(C),P_PINQ(A)::B(C)
      • S(b);N_PINB(C),OGATE,P_PINQ(A)::QAB(A),XQ(a)
      • P(j);N_GUARD::QAR1(A)
      • P(j);N_GUARD,N_SPINB(g)::QAR1(A)
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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).