MESON Chess Problem Database

Problem Display
PID: 17646 (R1n5/n5K1/8/8/8/8/7k/4BQ2 w - - 0 1)

Burbach, Johannes Jacob

Irene, 1948

R1n5/n5K1/8/8/8/8/7k/4BQ2

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Ra2#
    • 1...Sc6
      • 2.Ra2#
    • 1...Sb6
      • 2.Rh8#
    • 1...Sd6
      • 2.Rh8#
    • 1...Se7
      • 2.Rh8#
  • Tries
    • 1.Kg6?
      • 1...Sb5
        • 2.Ra2#
      • 1...Sc6
        • 2.Ra2#
      • 1...Sb6
        • 2.Rh8#
      • 1...Sd6
        • 2.Rh8#
      • 1...Se7+!
    • 1.Kf7?
      • 1...Sb5
        • 2.Ra2#
      • 1...Sc6
        • 2.Ra2#
      • 1...Sb6
        • 2.Rh8#
      • 1...Se7
        • 2.Rh8#
      • 1...Sd6+!
    • 1.Rb8?
      • threat
        • 2.Rb2#
      • 1...Sb6
        • 2.Rh8#
      • 1...Sb5!
    • 1.Rxc8?
      • threat
        • 2.Rc2#
        • 2.Rh8#
      • 1...Sc6
        • 2.Rh8#
      • 1...Sxc8!
    • 1.Qg1+?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxg1!
    • 1.Qf2+?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kh1!
  • Keys
    • 1.Kf6!
      • 1...Sb5
        • 2.Ra2#
      • 1...Sc6
        • 2.Ra2#
      • 1...Sb6
        • 2.Rh8#
      • 1...Sd6
        • 2.Rh8#
      • 1...Se7
        • 2.Rh8#

Anticipated by 149620(1922)

This anticipates 87695(1990)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::R(D)
    • S(c);OGATE::R(D)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(b);OGATE::R(D)
        • S(c);OGATE::R(D)
      • Refutation
        • S(c);CHECK
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(b);OGATE::R(D)
        • S(c);OGATE::R(D)
      • Refutation
        • S(c);CHECK
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • S(c);OGATE::R(D)
      • Refutation
        • S(b);
    • Try
      • R(D);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::R(D)
      • Refutation
        • S(b);XR(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • S(b);OGATE::R(D)
      • S(c);OGATE::R(D)
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