MESON Chess Problem Database

Problem Display
PID: 268317 (8/1pk1K3/B1N5/4N3/6Q1/8/8/8 w - - 0 1)

Guidelli, Giorgio

Good Companions, 1918

8/1pk1K3/B1N5/4N3/6Q1/8/8/8

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2023
3713 Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Qd7#
      • 2.Qc8#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qd7#
      • 1...bxc6
        • 2.Qc8#
        • 2.Qg3#
        • 2.Qf4#
      • 1...Kxc6!
    • 1.Qd4?
      • threat
        • 2.Qd8#
      • 1...Kc8
        • 2.Qd7#
        • 2.Qd8#
      • 1...bxa6!
    • 1.Qg8?
      • threat
        • 2.Qd8#
      • 1...bxa6
        • 2.Qb8#
      • 1...Kb6!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxb7#
      • 1...Kc8
        • 2.Qxb7#
      • 1...bxa6
        • 2.Qb8#
      • 1...bxc6
        • 2.Qb7#
      • 1...b5
        • 2.Qa5#
      • 1...b6
        • 2.Qd6#

This anticipates 47557(1928)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XS(D)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • P(a);XB(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(a);XB(C)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(A),XP(a)
      • P(a);OGATE,XB(C)::QAB1(A)
      • P(a);XS(D)::QAR1(A)
      • P(a);N_GUARD::QAB(A)
      • P(a);SBLOCK::QAB1(A)
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