MESON Chess Problem Database

Problem Display
PID: 74150 (7R/8/8/8/8/6N1/6k1/3KQ3 w - - 0 1)

Buchwald, Julius

Das Ratsel, 1929

7R/8/8/8/8/6N1/6k1/3KQ3

#2

4 + 1

70 American Chess Problemist 1949
5759 Selected Compositions of Julius Buchwald 2005
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf1?
      • 1...Kg1
        • 2.Se3#
      • 1...Kf3!
    • 1.Rg8?
      • 1...Kh2
        • 2.Qh1#
      • 1...Kh3
        • 2.Qh1#
      • 1...Kf3!
    • 1.Qe2+?
      • 1...Kg1
        • 2.Rh1#
        • 2.Qf1#
        • 2.Qh2#
      • 1...Kxg3!
  • Keys
    • 1.Sh5!
      • 1...Kh2
        • 2.Sf4#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kh3
        • 2.Qg3#

This anticipates 11829(1972), 164209(1988), 154644(2006), 146940(2012)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR(B)+S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Vars
      • K(a);P-FLIGHT::R(D)+S(C)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
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