MESON Chess Problem Database

Problem Display
PID: 214541 (3R4/1p1n2Q1/2b1N3/2pk2P1/5P2/1R6/2N2K2/1B6 w - - 0 1)

Jentz, Otto Frederick

New York Turf, Field and Farm, 1878

3R4/1p1n2Q1/2b1N3/2pk2P1/5P2/1R6/2N2K2/1B6

#2

9 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Se3#
      • 2.Sb4#
    • 1...c4
      • 2.Qe5#
  • Tries
    • 1.Sc7+?
      • 1...Kc4
        • 2.Rc3#
        • 2.Qc3#
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke4!
    • 1.Rxd7+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Ke4
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sb4#
        • 2.Scd4#
        • 2.Qe5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Bxd7!
    • 1.Qxd7+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke4
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sb4#
        • 2.Scd4#
        • 2.Qd3#
        • 2.Qh7#
      • 1...Bxd7!
  • Keys
    • 1.Rb6!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Se3#
        • 2.Sb4#
      • 1...Kd6
        • 2.Qxd7#
      • 1...Kxe6
        • 2.Qxd7#
      • 1...Ba4
        • 2.Se3#
      • 1...Bb5
        • 2.Se3#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR1(H)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(H)
      • Refutation
        • K(b);N_SPINS(e),S_FLIGHT
    • Try
      • R(I);CHECK,XS(e)
      • Vars
        • K(b);S_FLIGHT::QAR1(H)
        • K(b);S_FLIGHT,XS(G)::QAB1(H)
      • Refutation
        • B(c);XR(I)
    • Try
      • Q(H);CHECK,XS(e)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(H)
      • Refutation
        • B(c);P_SPINB(c),XQ(H)
  • Actual
    • R(D);
    • Vars
      • K(b);N_SPINS(e),S_FLIGHT::S(B)
      • K(b);P-FLIGHT,P_SPINB(c)::QAR1(H),XS(e)
      • K(b);N_SPINS(e),P_SPINB(c),S_FLIGHT,XS(G)::QAB1(H),XS(e)
      • B(c);::S(B)
      • P(a);SBLOCK::QAR1(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).