MESON Chess Problem Database

Problem Display
PID: 28300 (3K4/8/8/3Q1p2/3P3R/6k1/5pBb/5rr1 w - - 0 1)

Larsen, M

Source?, 1898

3K4/8/8/3Q1p2/3P3R/6k1/5pBb/5rr1

#2

5 + 6

3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qg5#
  • Tries
    • 1.Rh5?
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
      • 1...Kg4
        • 2.Qf3#
      • 1...Rxg2!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qg8#
      • 1...Kxg2
        • 2.Re3#
      • 1...Rxg2
        • 2.Qb3#
      • 1...fxe4
        • 2.Qg5#
      • 1...f4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATE::QAR2(D)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAR1(D)
      • Vars
        • K(e);S_FLIGHT::QAR1(D)
        • K(e);P-FLIGHT::QAB1(D)
      • Refutation
        • R(b);XB(A)
  • Actual
    • R(C);
    • Threat
      • QAR(D)
    • Vars
      • K(e);P-FLIGHT,XB(A)::QAB(D)+R(C)
      • R(b);SBLOCK,XB(A)::QAR(D)
      • P(f);OGATE,XR(C)::QAR2(D)
      • P(f);OGATE::QAR2(D)
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