MESON Chess Problem Database

Problem Display
PID: 224512 (1Q1N4/8/5K2/2k5/8/1P1b2R1/8/4R3 w - - 0 1)

von Hoene, HH

Nashville Daily American, 1887

1Q1N4/8/5K2/2k5/8/1P1b2R1/8/4R3

#2

6 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qe5#
    • 1...Kd5
      • 2.Qe5#
  • Tries
    • 1.Rg5+?
      • 1...Kd4
        • 2.Qe5#
      • 1...Bf5!
    • 1.Qd6+?
      • 1...Kb5
        • 2.Re5#
      • 1...Kxd6!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Re5#
        • 2.Rxd3#
      • 1...Kxb4!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Re5#
        • 2.Rxd3#
      • 1...Kxb6!
  • Keys
    • 1.Rd1!
      • 1...Kd4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Bf1
        • 2.Rg5#
      • 1...Bb1
        • 2.Rc3#
      • 1...Bc2
        • 2.Rc3#
      • 1...Be2
        • 2.Rg5#
      • 1...Bc4
        • 2.b4#
      • 1...Be4
        • 2.Rc3#
      • 1...Bb5
        • 2.Qd6#
      • 1...Bf5
        • 2.Rc3#
      • 1...Ba6
        • 2.Rg5#
      • 1...Bg6
        • 2.Rc3#
      • 1...Bh7
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(E)
    • K(b);P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::R(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
  • Actual
    • R(A);
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT,P_SPINB(a)::QAR1(E)
      • B(a);N_GUARD::R(C)
      • B(a);OGATE::R(C)
      • B(a);SBLOCK::P(B)
      • B(a);SBLOCK::QAB1(E)
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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).