MESON Chess Problem Database

Problem Display
PID: 169935 (8/5KN1/8/5pk1/2Q5/8/5P2/8 w - - 0 1)

Buetner, Ernst

Schweizerische Arbeiter Schach Journal, 1945

8/5KN1/8/5pk1/2Q5/8/5P2/8

#2

4 + 2

6490 yacpdb 2018
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qh4#
  • Tries
    • 1.Sxf5?
      • 1...Kh5
        • 2.Qh4#
      • 1...Kxf5!
    • 1.Se6+?
      • 1...Kh6
        • 2.Qh4#
      • 1...Kh5!
    • 1.Qa4?
      • 1...Kh6
        • 2.Qh4#
      • 1...f4!
    • 1.Qb4?
      • 1...Kh6
        • 2.Qh4#
      • 1...f4!
    • 1.Qd4?
      • 1...Kh6
        • 2.Qh4#
      • 1...f4!
    • 1.f3?
      • 1...Kh6
        • 2.Qh4#
      • 1...f4!
  • Keys
    • 1.Qe2!
      • 1...Kf4
        • 2.Se6#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kh6
        • 2.Qh5#
      • 1...f4
        • 2.Qh5#

Anticipated by 203778(1931)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • S(D);XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • P(A);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::S(D)
      • K(b);S_FLIGHT::QAR1(B)
      • P(a);SBLOCK::QAR1(B)
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