MESON Chess Problem Database

Problem Display
PID: 76973 (1bQ5/PP6/k7/1p1N4/8/8/K7/8 w - - 0 1)

Havel, Miroslav

Tidskrift for Schack, 1919

1bQ5/PP6/k7/1p1N4/8/8/K7/8

#2

5 + 3

6024 Bohemian Garnets 1923

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.a8Q#
      • 2.a8R#
    • 1...Bg3
      • 2.a8Q#
      • 2.a8R#
    • 1...Bf4
      • 2.a8Q#
      • 2.a8R#
    • 1...Be5
      • 2.a8Q#
      • 2.a8R#
    • 1...Bd6
      • 2.a8Q#
      • 2.a8R#
    • 1...Bc7
      • 2.a8Q#
      • 2.a8R#
  • Tries
    • 1.Qc6+?
      • 1...Kxa7
        • 2.Qb6#
      • 1...Ka5!
    • 1.Qxb8?
      • threat
        • 2.a8Q#
        • 2.a8R#
      • 1...Ka5
        • 2.a8Q#
        • 2.a8R#
      • 1...b4!
    • 1.axb8Q?
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa7#
        • 2.Qa8#
      • 1...b4!
    • 1.axb8R?
      • threat
        • 2.Ra8#
      • 1...Ka5
        • 2.Ra8#
      • 1...Ka7
        • 2.Ra8#
      • 1...b4!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qb6#
      • 1...Kxa7
        • 2.Qb6#
      • 1...Bxa7
        • 2.Sb4#
      • 1...Bxc7
        • 2.a8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::P=Q
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);XB(c)
      • Threat
        • P=Q
      • Vars
        • K(b);P-FLIGHT::P=Q
      • Refutation
        • P(a);
    • Try
      • P(C);XB(c)
      • Threat
        • QAR2(C)
      • Refutation
        • P(a);
    • Try
      • P(C);XB(c)
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::R(C)
        • K(b);P-FLIGHT::R1(C)
      • Refutation
        • P(a);
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(b);P-FLIGHT,XP(C)::QAB1(E)
      • B(c);SBLOCK,XP(C)::S(B)
      • B(c);N_GUARD,XQ(E)::P=Q
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