MESON Chess Problem Database

Problem Display
PID: 175713 (8/7b/5K2/8/4k3/2R5/1Qp5/8 w - - 0 1)

Udritz, O

Revaler Beobachter, 1898

8/7b/5K2/8/4k3/2R5/1Qp5/8

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rg3?
      • threat
        • 2.Qe5#
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd5!
    • 1.Qb5?
      • threat
        • 2.Qc4#
        • 2.Qe5#
      • 1...Kd4
        • 2.Qc4#
        • 2.Qe5#
      • 1...Bg8
        • 2.Qe5#
      • 1...Kf4!
    • 1.Qb7+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kd4!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAB1(A)
      • K(b);S_FLIGHT::QAR1(A)
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