MESON Chess Problem Database

Problem Display
PID: 233236 (4N3/8/3pp3/1Q6/1K1k2P1/2p3b1/8/1b3N1B w - - 0 1)

Muller, Dieter

Freie Presse, 1966

4N3/8/3pp3/1Q6/1K1k2P1/2p3b1/8/1b3N1B

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qc4#
    • 1...e5
      • 2.Qc4#
      • 2.Qd5#
  • Tries
    • 1.Qb6+?
      • 1...Ke5
        • 2.Qxd6#
      • 1...Kd3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxc3#
      • 1...Kd3
        • 2.Qe4#
      • 1...Ke5
        • 2.Qxd6#
      • 1...Be4
        • 2.Qxe4#
      • 1...Be1
        • 2.Qxd6#
      • 1...c2
        • 2.Qe4#
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(c);SBLOCK::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(E),XP(e)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E),XP(b)
    • Vars
      • K(d);P-FLIGHT::QAB1(E)
      • K(d);S_FLIGHT::QAB1(E),XP(e)
      • B(a);N_GUARD::QAR1(E),XB(a)
      • B(c);N_GUARD::QAR2(E),XP(e)
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