MESON Chess Problem Database

Problem Display
PID: 124259 (8/4Q3/1b6/3k1B2/8/1K2p3/3P4/8 w - - 0 1)

Gross, Erwin

Szachy, 1925

8/4Q3/1b6/3k1B2/8/1K2p3/3P4/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd6#
    • 1...Bd4
      • 2.Be4#
  • Tries
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kc5!
    • 1.Qd7+?
      • 1...Kc5
        • 2.d4#
      • 1...Ke5!
  • Keys
    • 1.d4!
      • threat
        • 2.Qd7#
      • 1...Kxd4
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd7#
      • 1...Bxd4
        • 2.Be4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bc7
        • 2.Qc5#

FEATURES

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