MESON Chess Problem Database

Problem Display
PID: 275334 (K7/b1RQR1p1/3P1p2/3k4/2NPN3/2ppp3/8/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Tat, 1959

(First published on Sat Sep 12 1959)

K7/b1RQR1p1/3P1p2/3k4/2NPN3/2ppp3/8/8

#2

8 + 7

6490 yacpdb 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qc6#
      • 2.Qe6#
  • Tries
    • 1.Sb6+?
      • 1...Kxd4
        • 2.Rc4#
        • 2.Qa4#
      • 1...Bxb6!
    • 1.Sxf6+?
      • 1...Kxd4
        • 2.Re4#
        • 2.Qg4#
      • 1...gxf6!
    • 1.Qg4?
      • threat
        • 2.Sxc3#
      • 1...Kxd4
        • 2.Sxf6#
      • 1...Bxd4
        • 2.Qe6#
      • 1...c2
        • 2.Sc3#
      • 1...Bc5!
    • 1.Qb5+?
      • 1...Bc5
        • 2.Qxc5#
      • 1...Kxd4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sxe3#
      • 1...Kxd4
        • 2.Sb6#
      • 1...Bxd4
        • 2.Qc6#
      • 1...e2
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • B(f);XS(A)
    • Try
      • S(C);CHECK,XP(e)
      • Refutation
        • P(g);XS(C)
    • Try
      • Q(F);
      • Threat
        • S(C),XP(a)
      • Vars
        • K(d);P-FLIGHT,S_CUTP(g),XP(B)::QAR(F)+S(C),XP(e)
        • B(f);SBLOCK,XP(B)::QAB1(F)
        • P(a);::S(C)
      • Refutation
        • B(f);
    • Try
      • Q(F);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
      • Refutation
        • K(d);P-FLIGHT,XP(B)
  • Actual
    • Q(F);
    • Threat
      • S(A),XP(c)
    • Vars
      • K(d);P-FLIGHT,S_CUTB(f),XP(B)::QAR(F)+S(A)
      • B(f);SBLOCK,XP(B)::QAB1(F)
      • P(c);::S(A)
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