MESON Chess Problem Database

Problem Display
PID: 73036 (8/7K/8/Q5N1/5npk/6NP/5P2/8 w - - 0 1)

Mayer, Artur

Neue Osnabrucker Zeitung, 1993

8/7K/8/Q5N1/5npk/6NP/5P2/8

#2

6 + 3

6113 Problemschach-Jahrbuch (1993) 1994
3713 Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • 1...Sxh3
        • 2.Sf3#
      • 1...gxh3
        • 2.Qxf4#
      • 1...Sd5
        • 2.Qxg4#
      • 1...Se2
        • 2.Qxg4#
      • 1...Sg2
        • 2.Qxg4#
      • 1...Sd3
        • 2.Qxg4#
      • 1...Sh5
        • 2.Qxg4#
      • 1...Se6
        • 2.Qxg4#
      • 1...Sg6
        • 2.Qxg4#
      • 1...Kxg5!
    • 1.Qf5?
      • threat
        • 2.Qxg4#
      • 1...gxh3
        • 2.Sf3#
        • 2.Qxf4#
      • 1...Sxh3!
  • Keys
    • 1.Qb4!
      • 1...Kxg5
        • 2.Qe7#
      • 1...Sxh3
        • 2.Sf3#
      • 1...gxh3
        • 2.Qxf4#
      • 1...Sd5
        • 2.Qxg4#
      • 1...Se2
        • 2.Qxg4#
      • 1...Sg2
        • 2.Qxg4#
      • 1...Sd3
        • 2.Qxg4#
      • 1...Sh5
        • 2.Qxg4#
      • 1...Se6
        • 2.Qxg4#
      • 1...Sg6
        • 2.Qxg4#

Anticipated by 153689(1947)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • S(a);P_SPINP(b),SBLOCK,XP(C)::S(E)
        • P(b);OGATEB,P_SPINS(a),XP(C)::QAR2(D),XS(a)
        • S(a);OGATE,P_SPINP(b)::QAR1(D),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
    • Try
      • Q(D);
      • Threat
        • QAR1(D),XP(b)
      • Refutation
        • S(a);XP(C)
  • Actual
    • Q(D);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(D)
      • S(a);P_SPINP(b),SBLOCK,XP(C)::S(E)
      • P(b);OGATEB,P_SPINS(a),XP(C)::QAR2(D),XS(a)
      • S(a);OGATE,P_SPINP(b)::QAR1(D),XP(b)
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