MESON Chess Problem Database

Problem Display
PID: 23006 (3n4/2pKp3/8/3k4/1R6/7Q/8/8 w - - 0 1)

Siers, Theodor

Hannover Courier, 1930

3n4/2pKp3/8/3k4/1R6/7Q/8/8

#2

3 + 4

3098 FIDE Album (1914-1944) (I) 1971
2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997
2786 More Fun with Chess Miniatures 2000
145 StrateGems 2008
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Qf5#
  • Tries
    • 1.Qg2+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kc5!
    • 1.Qe6+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Sxe6!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Rb5#
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qd4#
      • 1...Ke5!
    • 1.Qh4?
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qc4#
        • 2.Qd4#
      • 1...Ke5
        • 2.Qg5#
      • 1...Sc6
        • 2.Rb5#
      • 1...c5
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#
      • 1...Se6!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qc4#
        • 2.Qd4#
      • 1...Ke5
        • 2.Qg5#
      • 1...Sc6
        • 2.Rb5#
      • 1...Se6
        • 2.Qf5#
      • 1...c5
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#

Anticipated by 153380(1916)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);S_CUTP(c)::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • S(d);S_CUTP(b)::R(B)
        • P(b);SBLOCK::QAB1(A)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • S(d);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • S(d);S_CUTP(b)::R(B)
      • S(d);S_CUTP(c)::QAR2(A)
      • P(b);SBLOCK::QAB1(A)
      • P(c);SBLOCK::QAB1(A)
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