MESON Chess Problem Database

Problem Display
PID: 119846 (3K4/3R4/7N/2pPk3/1p6/n7/3Q1P2/8 w - - 0 1)

Peroutka, F

Bohemia, 1900

3K4/3R4/7N/2pPk3/1p6/n7/3Q1P2/8

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe3#
  • Tries
    • 1.Re7+?
      • 1...Kd6
        • 2.Sf5#
        • 2.Sf7#
        • 2.Re6#
      • 1...Kf6!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...bxc3!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kd4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Re6#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxd6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(d);P-FLIGHT::QAR1(A)
      • K(d);S_FLIGHT,XR(E)::S(D)
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