MESON Chess Problem Database

Problem Display
PID: 102882 (1B6/8/5K2/2Q5/6pk/5p1P/8/8 w - - 0 1)

Maniak, Adam

Szachy, 1953

1B6/8/5K2/2Q5/6pk/5p1P/8/8

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...gxh3
      • 2.Qg5#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qh6#
      • 1...Kh5
        • 2.Qg5#
      • 1...gxh3
        • 2.Qg5#
      • 1...Kxh3!
    • 1.Qc2?
      • threat
        • 2.Qh7#
      • 1...Kxh3
        • 2.Qh2#
      • 1...Kh5
        • 2.Qh7#
      • 1...gxh3!
    • 1.Qf5?
      • threat
        • 2.Qxg4#
        • 2.Qh7#
      • 1...gxh3
        • 2.Qg5#
      • 1...g3
        • 2.Qg4#
        • 2.Qh7#
      • 1...Kxh3!
    • 1.Qc7?
      • threat
        • 2.Qh7#
      • 1...Kxh3
        • 2.Qh2#
        • 2.Qg3#
      • 1...Kh5
        • 2.Qh7#
      • 1...gxh3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qh6#
      • 1...Kxh3
        • 2.Qh1#
      • 1...Kh5
        • 2.Qg5#
      • 1...gxh3
        • 2.Qg5#

Anticipated by 181773(1905), 95242(1941)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK,XP(A)::QAB1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • P(b);SBLOCK,XP(A)::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(a),XP(A)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(A)::QAR1(B)
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • P(b);XP(A)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK,XP(A)::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b),XP(A)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • P(b);XP(A)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(A)::QAR2(B)
      • K(c);P-FLIGHT::QAR1(B)
      • P(b);SBLOCK,XP(A)::QAB1(B)
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