MESON Chess Problem Database

Problem Display
PID: 222933 (6b1/1QN5/8/2p5/3k4/6P1/3K4/8 w - - 0 1)

Gudehus, Wilhelm Friedrich Adolf

Weltspiegel, 1886

6b1/1QN5/8/2p5/3k4/6P1/3K4/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bh7
      • 2.Qd5#
  • Tries
    • 1.Qb2+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Ke4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qf4#
      • 1...Kc4
        • 2.Qc3#
      • 1...Ke5
        • 2.Qf4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bh7
        • 2.Qd5#
      • 1...c4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAR1(C),XB(c)
    • B(c);N_GUARD::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAB1(C)
      • B(c);N_GUARD::QAR1(C),XB(c)
      • B(c);N_GUARD::QAR1(C)
      • P(b);SBLOCK::QAB1(C)
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