MESON Chess Problem Database

Problem Display
PID: 119869 (1Q6/8/5P2/3k1p2/1K2R1N1/5p2/8/8 w - - 0 1)

Otterstrom, Augusta

Allehanda for Folket, 1883

1Q6/8/5P2/3k1p2/1K2R1N1/5p2/8/8

#2

5 + 3

6490 yacpdb 2009
114 Springaren 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Rd4+?
      • 1...Kc6
        • 2.Se5#
        • 2.Rd6#
      • 1...Ke6
        • 2.Qe8#
        • 2.Qg8#
      • 1...Kxd4!
    • 1.Re5+?
      • 1...Kd4
        • 2.Qd6#
        • 2.Qd8#
      • 1...Kc6!
    • 1.Re6?
      • threat
        • 2.Qe5#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
        • 2.Qd8#
      • 1...Kxe6!
    • 1.Qb5+?
      • 1...Kxe4
        • 2.Qc4#
      • 1...Kd6!
    • 1.Qe8?
      • threat
        • 2.Qe6#
      • 1...fxe4
        • 2.Qd7#
      • 1...Kd6!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qc4#
      • 1...Kd6
        • 2.Rd4#
      • 1...fxe4
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(B)::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • P(c);SBLOCK,XR(B)::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT,XR(B)::QAR2(E)
      • K(b);P-FLIGHT::R(B)
      • P(c);SBLOCK,XR(B)::QAR2(E)
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