Problem Display
PID: 3048 (4R3/8/8/7Q/8/8/3k4/B5K1 w - - 0 1)

Palitzsch, Friedrich Martin

Deutsches Wochenschach, 1917

4R3/8/8/7Q/8/8/3k4/B5K1

#2

4 + 1


4883 Still More Fun with Chess Miniatures 2002
3713 Snap 2004

SOLUTION


  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qe2#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc2!
    • 1.Rd8+?
      • 1...Kc1
        • 2.Qd1#
      • 1...Ke1
        • 2.Bc3#
        • 2.Rd1#
        • 2.Qd1#
        • 2.Qe8#
        • 2.Qe5#
      • 1...Kc2
        • 2.Qd1#
      • 1...Ke3!
    • 1.Qh2+?
      • 1...Kc1
        • 2.Re1#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kd1!
    • 1.Qc5?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kd1!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qd1#
        • 2.Qe2#
      • 1...Kxe1
        • 2.Bc3#
      • 1...Kc2
        • 2.Qd1#
      • 1...Kd3
        • 2.Qe2#

Anticipated by 9606(1906)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::R(D)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT,XR(D)::B(A)
      • K(a);P-FLIGHT::QAB1(C)


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).