MESON Chess Problem Database

Problem Display
PID: 233485 (8/1B1p4/5K2/7P/6P1/6Pk/2Q3R1/8 w - - 0 1)

Schreckenbach, Michael

Freie Presse, 1985

8/1B1p4/5K2/7P/6P1/6Pk/2Q3R1/8

#2

7 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg4
      • 2.Qf5#
  • Tries
    • 1.Bd5?
      • 1...Kxg4
        • 2.Qf5#
      • 1...d6!
    • 1.Rh2+?
      • 1...Kxg4
        • 2.Qg6#
      • 1...Kxg3!
    • 1.g5?
      • threat
        • 2.Qf5#
      • 1...d5
        • 2.Bc8#
      • 1...Kg4!
  • Keys
    • 1.Bc8!
      • 1...Kxg4
        • 2.Qf5#
      • 1...d5
        • 2.g5#
      • 1...d6
        • 2.g5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(A)
  • Tries
    • Try
      • B(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • P(D);
      • Threat
        • QAB(A)
      • Vars
        • P(b);OGATEB::B(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(G);
    • Vars
      • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XP(D)::QAB1(A)
      • P(b);::B(G)+P(D)
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