MESON Chess Problem Database

Problem Display
PID: 90808 (K7/4p3/2P3p1/4Bk2/2PPN1p1/1B6/8/7Q w - - 0 1)

Hoffmann, Fritz

Die Schwalbe, 1968

K7/4p3/2P3p1/4Bk2/2PPN1p1/1B6/8/7Q

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3+?
      • 1...Ke6
        • 2.Qd5#
        • 2.c5#
      • 1...Kg5!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Sc5#
        • 2.Sg5#
        • 2.c5#
      • 1...gxf3!
    • 1.Qf1+?
      • 1...Ke6
        • 2.Sc5#
        • 2.Sg5#
        • 2.c5#
      • 1...Kxe4!
    • 1.c5?
      • 1...g3
        • 2.Qf3#
      • 1...g5
        • 2.Qh7#
      • 1...e6!
  • Keys
    • 1.Bc2!
      • 1...Ke6
        • 2.Sg5#
      • 1...g3
        • 2.Qh3#
      • 1...g5
        • 2.Sc5#
      • 1...e6
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • P(C);
      • Vars
        • P(a);N_GUARD::QAR2(A)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(d);
  • Actual
    • B(B);
    • Vars
      • K(b);S_FLIGHT::S(E)
      • P(a);OGATEB::QAB(A)
      • P(c);SBLOCK::B(B)+S(E)
      • P(d);SBLOCK::QAR(A)
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