MESON Chess Problem Database

Problem Display
PID: 165552 (8/4p1K1/8/4k3/4P1Q1/b2nB3/2Bn4/6N1 w - - 0 1)

Almgren, Sven Elias

Tidskrift for Schack, 1921

8/4p1K1/8/4k3/4P1Q1/b2nB3/2Bn4/6N1

#2

6 + 5

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qf5#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qe6#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sc5
        • 2.Qg3#
        • 2.Qf4#
      • 1...e6
        • 2.Qxe6#
      • 1...Kd6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Sxe4
        • 2.Sf3#
      • 1...Bd6
        • 2.Qf5#
      • 1...Sb4
        • 2.Qxe7#
      • 1...Sf4
        • 2.Bd4#
      • 1...e6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAR1(E)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAR1(E)
      • Vars
        • S(c);N_GUARD::QAB1(E),XS(c)
        • P(e);::QAR1(E),XP(e)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(c),XP(D)::QAR2(E)
      • S(a);N_GUARD,SBLOCK,XP(D)::S(A)
      • B(b);SBLOCK::QAR1(E)
      • S(c);S_CUTB(b)::QAR2(E),XP(e)
      • S(c);SBLOCK::B(C)
      • P(e);SBLOCK::QAB1(E)
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