MESON Chess Problem Database

Problem Display
PID: 9679 (8/8/7Q/8/8/2p5/2pN1N2/2k2K2 w - - 0 1)

Schlechter, Carl

Allgemeine Sportzeitung, 1908

8/8/7Q/8/8/2p5/2pN1N2/2k2K2

#2

4 + 3

2012 Miniature Chess Problems from Many Countries 1981
3310 2345 Chess Problems 1997
5424 Versunkene Schatze 1998
4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qg7?
      • 1...Kxd2
        • 2.Qh6#
        • 2.Qg5#
      • 1...cxd2
        • 2.Qa1#
      • 1...Kb2!
    • 1.Qb6?
      • 1...Kxd2
        • 2.Qh6#
      • 1...cxd2!
    • 1.Qf6?
      • 1...Kxd2
        • 2.Qg5#
        • 2.Qf4#
        • 2.Qh6#
      • 1...cxd2
        • 2.Qa1#
      • 1...Kb2!
    • 1.Qh8?
      • 1...Kxd2
        • 2.Qh6#
      • 1...cxd2
        • 2.Qa1#
      • 1...Kb2!
  • Keys
    • 1.Qa6!
      • 1...Kb2
        • 2.Sd3#
      • 1...Kxd2
        • 2.Qh6#
      • 1...cxd2
        • 2.Qa1#

Anticipated by 2180(1900)

This anticipates 29034(1994)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • P(c);OGATE,SBLOCK,XS(B)::QAR2(D)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB(D)
      • Refutation
        • P(c);XS(B)
    • Try
      • Q(D);
      • Vars
        • P(c);OGATE,SBLOCK,XS(B)::QAR2(D)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB(D)
        • P(c);OGATE,SBLOCK,XS(B)::QAR2(D)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB(D)
      • P(c);SBLOCK,XS(B)::QAR2(D)
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